diff options
Diffstat (limited to 'nuttx/libc/math')
73 files changed, 4297 insertions, 0 deletions
diff --git a/nuttx/libc/math/Kconfig b/nuttx/libc/math/Kconfig new file mode 100644 index 000000000..c24bfd53f --- /dev/null +++ b/nuttx/libc/math/Kconfig @@ -0,0 +1,26 @@ +# +# For a description of the syntax of this configuration file, +# see misc/tools/kconfig-language.txt. +# + +config LIBM + bool "Math library" + default n + depends on !ARCH_MATH_H + ---help--- + By default, no math library will be provided by NuttX. In this this case, it + is assumed that (1) no math library is required, or (2) you will be using the + math.h header file and the libm library provided by your toolchain. + + This is may be a very good choice is possible because your toolchain may have + have a highly optimized version of libm. + + Another possibility is that you have a custom, architecture-specific math + libary and that the corresponding math.h file resides at arch/<architecture>/include/math.h. + The option is selected via ARCH_MATH_H. If ARCH_MATH_H is selected,then the include/nuttx/math.h + header file will be copied to include/math.h where it can be used by your applications. + + If ARCH_MATH_H is not defined, then this option can be selected to build a generic, + math library built into NuttX. This math library comes from the Rhombus OS and + was written by Nick Johnson. The Rhombus OS math library port was contributed by + Darcy Gong. diff --git a/nuttx/libc/math/Make.defs b/nuttx/libc/math/Make.defs new file mode 100644 index 000000000..73d0be6f3 --- /dev/null +++ b/nuttx/libc/math/Make.defs @@ -0,0 +1,62 @@ +############################################################################ +# lib/math/Make.defs +# +# Copyright (C) 2012 Gregory Nutt. All rights reserved. +# Author: Gregory Nutt <gnutt@nuttx.org> +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in +# the documentation and/or other materials provided with the +# distribution. +# 3. Neither the name NuttX nor the names of its contributors may be +# used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS +# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED +# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +# POSSIBILITY OF SUCH DAMAGE. +# +############################################################################ + +ifeq ($(CONFIG_LIBM),y) + +# Add the floating point math C files to the build + +CSRCS += lib_acosf.c lib_asinf.c lib_atan2f.c lib_atanf.c lib_ceilf.c lib_cosf.c +CSRCS += lib_coshf.c lib_expf.c lib_fabsf.c lib_floorf.c lib_fmodf.c lib_frexpf.c +CSRCS += lib_ldexpf.c lib_logf.c lib_log10f.c lib_log2f.c lib_modff.c lib_powf.c +CSRCS += lib_sinf.c lib_sinhf.c lib_sqrtf.c lib_tanf.c lib_tanhf.c + +CSRCS += lib_acos.c lib_asin.c lib_atan.c lib_atan2.c lib_ceil.c lib_cos.c +CSRCS += lib_cosh.c lib_exp.c lib_fabs.c lib_floor.c lib_fmod.c lib_frexp.c +CSRCS += lib_ldexp.c lib_log.c lib_log10.c lib_log2.c lib_modf.c lib_pow.c +CSRCS += lib_sin.c lib_sinh.c lib_sqrt.c lib_tan.c lib_tanh.c + +CSRCS += lib_acosl.c lib_asinl.c lib_atan2l.c lib_atanl.c lib_ceill.c lib_cosl.c +CSRCS += lib_coshl.c lib_expl.c lib_fabsl.c lib_floorl.c lib_fmodl.c lib_frexpl.c +CSRCS += lib_ldexpl.c lib_logl.c lib_log10l.c lib_log2l.c lib_modfl.c lib_powl.c +CSRCS += lib_sinl.c lib_sinhl.c lib_sqrtl.c lib_tanl.c lib_tanhl.c + +CSRCS += lib_libexpi.c lib_libsqrtapprox.c + +# Add the floating point math directory to the build + +DEPPATH += --dep-path math +VPATH += :math + +endif diff --git a/nuttx/libc/math/lib_acos.c b/nuttx/libc/math/lib_acos.c new file mode 100644 index 000000000..d5ec36b9f --- /dev/null +++ b/nuttx/libc/math/lib_acos.c @@ -0,0 +1,46 @@ +/************************************************************************ + * lib/math/lib_acos.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double acos(double x) +{ + return (M_PI_2 - asin(x)); +} +#endif diff --git a/nuttx/libc/math/lib_acosf.c b/nuttx/libc/math/lib_acosf.c new file mode 100644 index 000000000..e14a73a6e --- /dev/null +++ b/nuttx/libc/math/lib_acosf.c @@ -0,0 +1,41 @@ +/************************************************************************ + * lib/math/lib_acosf.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float acosf(float x) +{ + return (M_PI_2 - asinf(x)); +} diff --git a/nuttx/libc/math/lib_acosl.c b/nuttx/libc/math/lib_acosl.c new file mode 100644 index 000000000..911330577 --- /dev/null +++ b/nuttx/libc/math/lib_acosl.c @@ -0,0 +1,46 @@ +/************************************************************************ + * lib/math/lib_acos.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double acosl(long double x) +{ + return (M_PI_2 - asinl(x)); +} +#endif diff --git a/nuttx/libc/math/lib_asin.c b/nuttx/libc/math/lib_asin.c new file mode 100644 index 000000000..61b953531 --- /dev/null +++ b/nuttx/libc/math/lib_asin.c @@ -0,0 +1,69 @@ +/************************************************************************ + * lib/math/lib_sin.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> +#include <float.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double asin(double x) +{ + long double y, y_sin, y_cos; + + y = 0; + + while (1) + { + y_sin = sin(y); + y_cos = cos(y); + + if (y > M_PI_2 || y < -M_PI_2) + { + y = fmod(y, M_PI); + } + + if (y_sin + DBL_EPSILON >= x && y_sin - DBL_EPSILON <= x) + { + break; + } + + y = y - (y_sin - x) / y_cos; + } + + return y; +} +#endif diff --git a/nuttx/libc/math/lib_asinf.c b/nuttx/libc/math/lib_asinf.c new file mode 100644 index 000000000..17669a934 --- /dev/null +++ b/nuttx/libc/math/lib_asinf.c @@ -0,0 +1,65 @@ +/************************************************************************ + * lib/math/lib_sinf.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <math.h> +#include <float.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float asinf(float x) +{ + long double y, y_sin, y_cos; + + y = 0; + + while (1) + { + y_sin = sinf(y); + y_cos = cosf(y); + + if (y > M_PI_2 || y < -M_PI_2) + { + y = fmodf(y, M_PI); + } + + if (y_sin + FLT_EPSILON >= x && y_sin - FLT_EPSILON <= x) + { + break; + } + + y = y - (y_sin - x) / y_cos; + } + + return y; +} + diff --git a/nuttx/libc/math/lib_asinl.c b/nuttx/libc/math/lib_asinl.c new file mode 100644 index 000000000..dbb2bc3a2 --- /dev/null +++ b/nuttx/libc/math/lib_asinl.c @@ -0,0 +1,69 @@ +/************************************************************************ + * lib/math/lib_sinl.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> +#include <float.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double asinl(long double x) +{ + long double y, y_sin, y_cos; + + y = 0; + + while (1) + { + y_sin = sinl(y); + y_cos = cosl(y); + + if (y > M_PI_2 || y < -M_PI_2) + { + y = fmodl(y, M_PI); + } + + if (y_sin + LDBL_EPSILON >= x && y_sin - LDBL_EPSILON <= x) + { + break; + } + + y = y - (y_sin - x) / y_cos; + } + + return y; +} +#endif diff --git a/nuttx/libc/math/lib_atan.c b/nuttx/libc/math/lib_atan.c new file mode 100644 index 000000000..b4db8fb31 --- /dev/null +++ b/nuttx/libc/math/lib_atan.c @@ -0,0 +1,48 @@ +/************************************************************************ + * lib/math/lib_atan.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> +#include <stddef.h> +#include <stdint.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double atan(double x) +{ + return asin(x / sqrt(x * x + 1)); +} +#endif diff --git a/nuttx/libc/math/lib_atan2.c b/nuttx/libc/math/lib_atan2.c new file mode 100644 index 000000000..82d1f47ec --- /dev/null +++ b/nuttx/libc/math/lib_atan2.c @@ -0,0 +1,86 @@ +/************************************************************************ + * lib/math/lib_atan2.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double atan2(double y, double x) +{ + if (y == 0.0) + { + if (x >= 0.0) + { + return 0.0; + } + else + { + return M_PI; + } + } + else if (y > 0.0) + { + if (x == 0.0) + { + return M_PI_2; + } + else if (x > 0.0) + { + return atan(y / x); + } + else + { + return M_PI - atan(y / x); + } + } + else + { + if (x == 0.0) + { + return M_PI + M_PI_2; + } + else if (x > 0.0) + { + return 2 * M_PI - atan(y / x); + } + else + { + return M_PI + atan(y / x); + } + } +} +#endif diff --git a/nuttx/libc/math/lib_atan2f.c b/nuttx/libc/math/lib_atan2f.c new file mode 100644 index 000000000..a60d32c65 --- /dev/null +++ b/nuttx/libc/math/lib_atan2f.c @@ -0,0 +1,81 @@ +/************************************************************************ + * lib/math/lib_atan2f.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float atan2f(float y, float x) +{ + if (y == 0.0) + { + if (x >= 0.0) + { + return 0.0; + } + else + { + return M_PI; + } + } + else if (y > 0.0) + { + if (x == 0.0) + { + return M_PI_2; + } + else if (x > 0.0) + { + return atanf(y / x); + } + else + { + return M_PI - atanf(y / x); + } + } + else + { + if (x == 0.0) + { + return M_PI + M_PI_2; + } + else if (x > 0.0) + { + return 2 * M_PI - atanf(y / x); + } + else + { + return M_PI + atanf(y / x); + } + } +} diff --git a/nuttx/libc/math/lib_atan2l.c b/nuttx/libc/math/lib_atan2l.c new file mode 100644 index 000000000..07fcd9669 --- /dev/null +++ b/nuttx/libc/math/lib_atan2l.c @@ -0,0 +1,87 @@ +/************************************************************************ + * lib/math/lib_atan2l.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double atan2l(long double y, long double x) +{ + + if (y == 0.0) + { + if (x >= 0.0) + { + return 0.0; + } + else + { + return M_PI; + } + } + else if (y > 0.0) + { + if (x == 0.0) + { + return M_PI_2; + } + else if (x > 0.0) + { + return atanl(y / x); + } + else + { + return M_PI - atanl(y / x); + } + } + else + { + if (x == 0.0) + { + return M_PI + M_PI_2; + } + else if (x > 0.0) + { + return 2 * M_PI - atanl(y / x); + } + else + { + return M_PI + atanl(y / x); + } + } +} +#endif diff --git a/nuttx/libc/math/lib_atanf.c b/nuttx/libc/math/lib_atanf.c new file mode 100644 index 000000000..7c540dd16 --- /dev/null +++ b/nuttx/libc/math/lib_atanf.c @@ -0,0 +1,43 @@ +/************************************************************************ + * lib/math/lib_atanf.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <math.h> +#include <stddef.h> +#include <stdint.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float atanf(float x) +{ + return asinf(x / sqrtf(x * x + 1)); +} diff --git a/nuttx/libc/math/lib_atanl.c b/nuttx/libc/math/lib_atanl.c new file mode 100644 index 000000000..0fa203098 --- /dev/null +++ b/nuttx/libc/math/lib_atanl.c @@ -0,0 +1,48 @@ +/************************************************************************ + * lib/math/lib_atanl.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> +#include <stddef.h> +#include <stdint.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double atanl(long double x) +{ + return asinl(x / sqrtl(x * x + 1)); +} +#endif diff --git a/nuttx/libc/math/lib_ceil.c b/nuttx/libc/math/lib_ceil.c new file mode 100644 index 000000000..0e7602996 --- /dev/null +++ b/nuttx/libc/math/lib_ceil.c @@ -0,0 +1,52 @@ +/************************************************************************ + * lib/math/lib_ceil.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double ceil(double x) +{ + modf(x, &x); + if (x > 0.0) + { + x += 1.0; + } + + return x; +} +#endif diff --git a/nuttx/libc/math/lib_ceilf.c b/nuttx/libc/math/lib_ceilf.c new file mode 100644 index 000000000..0721ffc22 --- /dev/null +++ b/nuttx/libc/math/lib_ceilf.c @@ -0,0 +1,47 @@ +/************************************************************************ + * lib/math/lib_ceilf.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float ceilf(float x) +{ + modff(x, &x); + if (x > 0.0) + { + x += 1.0; + } + + return x; +} diff --git a/nuttx/libc/math/lib_ceill.c b/nuttx/libc/math/lib_ceill.c new file mode 100644 index 000000000..a24b56f68 --- /dev/null +++ b/nuttx/libc/math/lib_ceill.c @@ -0,0 +1,52 @@ +/************************************************************************ + * lib/math/lib_ceil;.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double ceill(long double x) +{ + modfl(x, &x); + if (x > 0.0) + { + x += 1.0; + } + + return x; +} +#endif diff --git a/nuttx/libc/math/lib_cos.c b/nuttx/libc/math/lib_cos.c new file mode 100644 index 000000000..aa672b855 --- /dev/null +++ b/nuttx/libc/math/lib_cos.c @@ -0,0 +1,46 @@ +/************************************************************************ + * lib/math/lib_cos.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double cos(double x) +{ + return sin(x + M_PI_2); +} +#endif diff --git a/nuttx/libc/math/lib_cosf.c b/nuttx/libc/math/lib_cosf.c new file mode 100644 index 000000000..093a8a002 --- /dev/null +++ b/nuttx/libc/math/lib_cosf.c @@ -0,0 +1,41 @@ +/************************************************************************ + * lib/math/lib_cosf.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float cosf(float x) +{ + return sinf(x + M_PI_2); +} diff --git a/nuttx/libc/math/lib_cosh.c b/nuttx/libc/math/lib_cosh.c new file mode 100644 index 000000000..1be44d293 --- /dev/null +++ b/nuttx/libc/math/lib_cosh.c @@ -0,0 +1,47 @@ +/************************************************************************ + * lib/math/lib_cosh.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double cosh(double x) +{ + x = exp(x); + return ((x + (1.0 / x)) / 2.0); +} +#endif diff --git a/nuttx/libc/math/lib_coshf.c b/nuttx/libc/math/lib_coshf.c new file mode 100644 index 000000000..d5e5ea14d --- /dev/null +++ b/nuttx/libc/math/lib_coshf.c @@ -0,0 +1,42 @@ +/************************************************************************ + * lib/math/lib_coshf.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float coshf(float x) +{ + x = expf(x); + return ((x + (1.0 / x)) / 2.0); +} diff --git a/nuttx/libc/math/lib_coshl.c b/nuttx/libc/math/lib_coshl.c new file mode 100644 index 000000000..4576b8876 --- /dev/null +++ b/nuttx/libc/math/lib_coshl.c @@ -0,0 +1,47 @@ +/************************************************************************ + * lib/math/lib_coshl.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double coshl(long double x) +{ + x = expl(x); + return ((x + (1.0 / x)) / 2.0); +} +#endif diff --git a/nuttx/libc/math/lib_cosl.c b/nuttx/libc/math/lib_cosl.c new file mode 100644 index 000000000..25dd86139 --- /dev/null +++ b/nuttx/libc/math/lib_cosl.c @@ -0,0 +1,46 @@ +/************************************************************************ + * lib/math/lib_cosl.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double cosl(long double x) +{ + return sinl(x + M_PI_2); +} +#endif diff --git a/nuttx/libc/math/lib_exp.c b/nuttx/libc/math/lib_exp.c new file mode 100644 index 000000000..1e3120453 --- /dev/null +++ b/nuttx/libc/math/lib_exp.c @@ -0,0 +1,126 @@ +/************************************************************************ + * lib/math/lib_exp.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <sys/types.h> +#include <math.h> + +#include "lib_internal.h" + +#ifdef CONFIG_HAVE_DOUBLE + +/************************************************************************ + * Private Data + ************************************************************************/ + +static double _dbl_inv_fact[] = +{ + 1.0 / 1.0, // 1 / 0! + 1.0 / 1.0, // 1 / 1! + 1.0 / 2.0, // 1 / 2! + 1.0 / 6.0, // 1 / 3! + 1.0 / 24.0, // 1 / 4! + 1.0 / 120.0, // 1 / 5! + 1.0 / 720.0, // 1 / 6! + 1.0 / 5040.0, // 1 / 7! + 1.0 / 40320.0, // 1 / 8! + 1.0 / 362880.0, // 1 / 9! + 1.0 / 3628800.0, // 1 / 10! + 1.0 / 39916800.0, // 1 / 11! + 1.0 / 479001600.0, // 1 / 12! + 1.0 / 6227020800.0, // 1 / 13! + 1.0 / 87178291200.0, // 1 / 14! + 1.0 / 1307674368000.0, // 1 / 15! + 1.0 / 20922789888000.0, // 1 / 16! + 1.0 / 355687428096000.0, // 1 / 17! + 1.0 / 6402373705728000.0, // 1 / 18! +}; + +/************************************************************************ + * Public Functions + ************************************************************************/ + +double exp(double x) +{ + size_t int_part; + bool invert; + double value; + double x0; + size_t i; + + if (x == 0) + { + return 1; + } + else if (x < 0) + { + invert = true; + x = -x; + } + else + { + invert = false; + } + + /* Extract integer component */ + + int_part = (size_t) x; + + /* Set x to fractional component */ + + x -= (double)int_part; + + /* Perform Taylor series approximation with nineteen terms */ + + value = 0.0; + x0 = 1.0; + for (i = 0; i < 19; i++) + { + value += x0 * _dbl_inv_fact[i]; + x0 *= x; + } + + /* Multiply by exp of the integer component */ + + value *= lib_expi(int_part); + + if (invert) + { + return (1.0 / value); + } + else + { + return value; + } +} +#endif diff --git a/nuttx/libc/math/lib_expf.c b/nuttx/libc/math/lib_expf.c new file mode 100644 index 000000000..eac4641c6 --- /dev/null +++ b/nuttx/libc/math/lib_expf.c @@ -0,0 +1,112 @@ +/************************************************************************ + * lib/math/lib_expf.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <sys/types.h> +#include <math.h> + +#include "lib_internal.h" + +/************************************************************************ + * Private Data + ************************************************************************/ + +static float _flt_inv_fact[] = +{ + 1.0 / 1.0, // 1/0! + 1.0 / 1.0, // 1/1! + 1.0 / 2.0, // 1/2! + 1.0 / 6.0, // 1/3! + 1.0 / 24.0, // 1/4! + 1.0 / 120.0, // 1/5! + 1.0 / 720.0, // 1/6! + 1.0 / 5040.0, // 1/7! + 1.0 / 40320.0, // 1/8! + 1.0 / 362880.0, // 1/9! + 1.0 / 3628800.0, // 1/10! +}; + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float expf(float x) +{ + size_t int_part; + bool invert; + float value; + float x0; + size_t i; + + if (x == 0) + { + return 1; + } + else if (x < 0) + { + invert = true; + x = -x; + } + else + { + invert = false; + } + + /* Extract integer component */ + + int_part = (size_t) x; + + /* set x to fractional component */ + + x -= (float)int_part; + + /* Perform Taylor series approximation with eleven terms */ + + value = 0.0; + x0 = 1.0; + for (i = 0; i < 10; i++) + { + value += x0 * _flt_inv_fact[i]; + x0 *= x; + } + + /* Multiply by exp of the integer component */ + + value *= lib_expi(int_part); + + if (invert) + { + return (1.0 / value); + } + else + { + return value; + } +} diff --git a/nuttx/libc/math/lib_expl.c b/nuttx/libc/math/lib_expl.c new file mode 100644 index 000000000..053103c9b --- /dev/null +++ b/nuttx/libc/math/lib_expl.c @@ -0,0 +1,126 @@ +/************************************************************************ + * lib/math/lib_expl.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <sys/types.h> +#include <math.h> + +#include "lib_internal.h" + +#ifdef CONFIG_HAVE_LONG_DOUBLE + +/************************************************************************ + * Private Data + ************************************************************************/ + +static long double _ldbl_inv_fact[] = +{ + 1.0 / 1.0, // 1 / 0! + 1.0 / 1.0, // 1 / 1! + 1.0 / 2.0, // 1 / 2! + 1.0 / 6.0, // 1 / 3! + 1.0 / 24.0, // 1 / 4! + 1.0 / 120.0, // 1 / 5! + 1.0 / 720.0, // 1 / 6! + 1.0 / 5040.0, // 1 / 7! + 1.0 / 40320.0, // 1 / 8! + 1.0 / 362880.0, // 1 / 9! + 1.0 / 3628800.0, // 1 / 10! + 1.0 / 39916800.0, // 1 / 11! + 1.0 / 479001600.0, // 1 / 12! + 1.0 / 6227020800.0, // 1 / 13! + 1.0 / 87178291200.0, // 1 / 14! + 1.0 / 1307674368000.0, // 1 / 15! + 1.0 / 20922789888000.0, // 1 / 16! + 1.0 / 355687428096000.0, // 1 / 17! + 1.0 / 6402373705728000.0, // 1 / 18! +}; + +/************************************************************************ + * Public Functions + ************************************************************************/ + +long double expl(long double x) +{ + size_t int_part; + bool invert; + long double value; + long double x0; + size_t i; + + if (x == 0) + { + return 1; + } + else if (x < 0) + { + invert = true; + x = -x; + } + else + { + invert = false; + } + + /* Extract integer component */ + + int_part = (size_t) x; + + /* Set x to fractional component */ + + x -= (long double)int_part; + + /* Perform Taylor series approximation with nineteen terms */ + + value = 0.0; + x0 = 1.0; + for (i = 0; i < 19; i++) + { + value += x0 * _ldbl_inv_fact[i]; + x0 *= x; + } + + /* Multiply by exp of the integer component */ + + value *= lib_expi(int_part); + + if (invert) + { + return (1.0 / value); + } + else + { + return value; + } +} +#endif diff --git a/nuttx/libc/math/lib_fabs.c b/nuttx/libc/math/lib_fabs.c new file mode 100644 index 000000000..ff99ceb64 --- /dev/null +++ b/nuttx/libc/math/lib_fabs.c @@ -0,0 +1,46 @@ +/************************************************************************ + * lib/math/lib_fabs.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double fabs(double x) +{ + return ((x < 0) ? -x : x); +} +#endif diff --git a/nuttx/libc/math/lib_fabsf.c b/nuttx/libc/math/lib_fabsf.c new file mode 100644 index 000000000..0ea186ca0 --- /dev/null +++ b/nuttx/libc/math/lib_fabsf.c @@ -0,0 +1,41 @@ +/************************************************************************ + * lib/math/lib_fabsf.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float fabsf(float x) +{ + return ((x < 0) ? -x : x); +} diff --git a/nuttx/libc/math/lib_fabsl.c b/nuttx/libc/math/lib_fabsl.c new file mode 100644 index 000000000..5313d897d --- /dev/null +++ b/nuttx/libc/math/lib_fabsl.c @@ -0,0 +1,46 @@ +/************************************************************************ + * lib/math/lib_fabsl.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double fabsl(long double x) +{ + return ((x < 0) ? -x : x); +} +#endif diff --git a/nuttx/libc/math/lib_floor.c b/nuttx/libc/math/lib_floor.c new file mode 100644 index 000000000..f0c4477a0 --- /dev/null +++ b/nuttx/libc/math/lib_floor.c @@ -0,0 +1,52 @@ +/************************************************************************ + * lib/math/lib_floor.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double floor(double x) +{ + modf(x, &x); + if (x < 0.0) + { + x -= 1.0; + } + + return x; +} +#endif diff --git a/nuttx/libc/math/lib_floorf.c b/nuttx/libc/math/lib_floorf.c new file mode 100644 index 000000000..2becb5fac --- /dev/null +++ b/nuttx/libc/math/lib_floorf.c @@ -0,0 +1,47 @@ +/************************************************************************ + * lib/math/lib_floorf.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float floorf(float x) +{ + modff(x, &x); + if (x < 0.0) + { + x -= 1.0; + } + + return x; +} diff --git a/nuttx/libc/math/lib_floorl.c b/nuttx/libc/math/lib_floorl.c new file mode 100644 index 000000000..e38ce80ed --- /dev/null +++ b/nuttx/libc/math/lib_floorl.c @@ -0,0 +1,52 @@ +/************************************************************************ + * lib/math/lib_floorl.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double floorl(long double x) +{ + modfl(x, &x); + if (x < 0.0) + { + x -= 1.0; + } + + return x; +} +#endif diff --git a/nuttx/libc/math/lib_fmod.c b/nuttx/libc/math/lib_fmod.c new file mode 100644 index 000000000..939e7e18a --- /dev/null +++ b/nuttx/libc/math/lib_fmod.c @@ -0,0 +1,52 @@ +/************************************************************************ + * lib/math/lib_fmod.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double fmod(double x, double div) +{ + double n0; + + x /= div; + x = modf(x, &n0); + x *= div; + + return x; +} +#endif diff --git a/nuttx/libc/math/lib_fmodf.c b/nuttx/libc/math/lib_fmodf.c new file mode 100644 index 000000000..085786f17 --- /dev/null +++ b/nuttx/libc/math/lib_fmodf.c @@ -0,0 +1,47 @@ +/************************************************************************ + * lib/math/lib_fmodf.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float fmodf(float x, float div) +{ + float n0; + + x /= div; + x = modff(x, &n0); + x *= div; + + return x; +} diff --git a/nuttx/libc/math/lib_fmodl.c b/nuttx/libc/math/lib_fmodl.c new file mode 100644 index 000000000..51c5e95ec --- /dev/null +++ b/nuttx/libc/math/lib_fmodl.c @@ -0,0 +1,52 @@ +/************************************************************************ + * lib/math/lib_fmodl.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double fmodl(long double x, long double div) +{ + long double n0; + + x /= div; + x = modfl(x, &n0); + x *= div; + + return x; +} +#endif diff --git a/nuttx/libc/math/lib_frexp.c b/nuttx/libc/math/lib_frexp.c new file mode 100644 index 000000000..56feee863 --- /dev/null +++ b/nuttx/libc/math/lib_frexp.c @@ -0,0 +1,47 @@ +/************************************************************************ + * lib/math/lib_frexp.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double frexp(double x, int *exponent) +{ + *exponent = (int)ceil(log2(x)); + return x / ldexp(1.0, *exponent); +} +#endif diff --git a/nuttx/libc/math/lib_frexpf.c b/nuttx/libc/math/lib_frexpf.c new file mode 100644 index 000000000..1fb0df3d8 --- /dev/null +++ b/nuttx/libc/math/lib_frexpf.c @@ -0,0 +1,42 @@ +/************************************************************************ + * lib/math/lib_frexpf.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float frexpf(float x, int *exponent) +{ + *exponent = (int)ceilf(log2f(x)); + return x / ldexpf(1.0, *exponent); +} diff --git a/nuttx/libc/math/lib_frexpl.c b/nuttx/libc/math/lib_frexpl.c new file mode 100644 index 000000000..87708ad86 --- /dev/null +++ b/nuttx/libc/math/lib_frexpl.c @@ -0,0 +1,47 @@ +/************************************************************************ + * lib/math/lib_frexpl.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double frexpl(long double x, int *exponent) +{ + *exponent = (int)ceill(log2(x)); + return x / ldexpl(1.0, *exponent); +} +#endif diff --git a/nuttx/libc/math/lib_ldexp.c b/nuttx/libc/math/lib_ldexp.c new file mode 100644 index 000000000..4c7b2b721 --- /dev/null +++ b/nuttx/libc/math/lib_ldexp.c @@ -0,0 +1,46 @@ +/************************************************************************ + * lib/math/lib_ldexp.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double ldexp(double x, int n) +{ + return (x * pow(2.0, (double)n)); +} +#endif diff --git a/nuttx/libc/math/lib_ldexpf.c b/nuttx/libc/math/lib_ldexpf.c new file mode 100644 index 000000000..c61d633d5 --- /dev/null +++ b/nuttx/libc/math/lib_ldexpf.c @@ -0,0 +1,41 @@ +/************************************************************************ + * lib/math/lib_ldexpf.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float ldexpf(float x, int n) +{ + return (x * powf(2.0, (float)n)); +} diff --git a/nuttx/libc/math/lib_ldexpl.c b/nuttx/libc/math/lib_ldexpl.c new file mode 100644 index 000000000..b9a0f4a86 --- /dev/null +++ b/nuttx/libc/math/lib_ldexpl.c @@ -0,0 +1,46 @@ +/************************************************************************ + * lib/math/lib_ldexpl.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double ldexpl(long double x, int n) +{ + return (x * powl(2.0, (long double)n)); +} +#endif diff --git a/nuttx/libc/math/lib_libexpi.c b/nuttx/libc/math/lib_libexpi.c new file mode 100644 index 000000000..1ec947a71 --- /dev/null +++ b/nuttx/libc/math/lib_libexpi.c @@ -0,0 +1,103 @@ +/************************************************************************ + * lib/math/lib_libexpi.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <sys/types.h> +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +/************************************************************************ + * Pre-processor Definitions + ************************************************************************/ + +#define M_E2 (M_E * M_E) +#define M_E4 (M_E2 * M_E2) +#define M_E8 (M_E4 * M_E4) +#define M_E16 (M_E8 * M_E8) +#define M_E32 (M_E16 * M_E16) +#define M_E64 (M_E32 * M_E32) +#define M_E128 (M_E64 * M_E64) +#define M_E256 (M_E128 * M_E128) +#define M_E512 (M_E256 * M_E256) +#define M_E1024 (M_E512 * M_E512) + +/************************************************************************ + * Private Data + ************************************************************************/ + +static double _expi_square_tbl[11] = +{ + M_E, // e^1 + M_E2, // e^2 + M_E4, // e^4 + M_E8, // e^8 + M_E16, // e^16 + M_E32, // e^32 + M_E64, // e^64 + M_E128, // e^128 + M_E256, // e^256 + M_E512, // e^512 + M_E1024, // e^1024 +}; + +/************************************************************************ + * Public Functions + ************************************************************************/ + +double lib_expi(size_t n) +{ + size_t i; + double val; + + if (n > 1024) + { + return INFINITY; + } + + val = 1.0; + + for (i = 0; n; i++) + { + if (n & (1 << i)) + { + n &= ~(1 << i); + val *= _expi_square_tbl[i]; + } + } + + return val; +} + diff --git a/nuttx/libc/math/lib_libsqrtapprox.c b/nuttx/libc/math/lib_libsqrtapprox.c new file mode 100644 index 000000000..5c556c3a0 --- /dev/null +++ b/nuttx/libc/math/lib_libsqrtapprox.c @@ -0,0 +1,50 @@ +/************************************************************************ + * lib/math/lib_libsqrtapprox.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <stdint.h> +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float lib_sqrtapprox(float x) +{ + int32_t i; + + /* Floats + bit manipulation = +inf fun! */ + + i = *((int32_t *) & x); + i = 0x1fc00000 + (i >> 1); + x = *((float *)&i); + + return x; +} diff --git a/nuttx/libc/math/lib_log.c b/nuttx/libc/math/lib_log.c new file mode 100644 index 000000000..1350ba4fe --- /dev/null +++ b/nuttx/libc/math/lib_log.c @@ -0,0 +1,82 @@ +/************************************************************************ + * lib/math/lib_log.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> +#include <float.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double log(double x) +{ + double y, y_old, ey, epsilon; + + y = 0.0; + y_old = 1.0; + epsilon = DBL_EPSILON; + + while (y > y_old + epsilon || y < y_old - epsilon) + { + y_old = y; + ey = exp(y); + y -= (ey - x) / ey; + + if (y > 700.0) + { + y = 700.0; + } + + if (y < -700.0) + { + y = -700.0; + } + + epsilon = (fabs(y) > 1.0) ? fabs(y) * DBL_EPSILON : DBL_EPSILON; + } + + if (y == 700.0) + { + return INFINITY; + } + + if (y == -700.0) + { + return INFINITY; + } + + return y; +} +#endif diff --git a/nuttx/libc/math/lib_log10.c b/nuttx/libc/math/lib_log10.c new file mode 100644 index 000000000..47854fca4 --- /dev/null +++ b/nuttx/libc/math/lib_log10.c @@ -0,0 +1,46 @@ +/************************************************************************ + * lib/math/lib_log10.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double log10(double x) +{ + return (log(x) / M_LN10); +} +#endif diff --git a/nuttx/libc/math/lib_log10f.c b/nuttx/libc/math/lib_log10f.c new file mode 100644 index 000000000..651071920 --- /dev/null +++ b/nuttx/libc/math/lib_log10f.c @@ -0,0 +1,41 @@ +/************************************************************************ + * lib/math/lib_log10f.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float log10f(float x) +{ + return (logf(x) / M_LN10); +} diff --git a/nuttx/libc/math/lib_log10l.c b/nuttx/libc/math/lib_log10l.c new file mode 100644 index 000000000..65892262a --- /dev/null +++ b/nuttx/libc/math/lib_log10l.c @@ -0,0 +1,46 @@ +/************************************************************************ + * lib/math/lib_log10l.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double log10l(long double x) +{ + return (logl(x) / M_LN10); +} +#endif diff --git a/nuttx/libc/math/lib_log2.c b/nuttx/libc/math/lib_log2.c new file mode 100644 index 000000000..0aa1e8010 --- /dev/null +++ b/nuttx/libc/math/lib_log2.c @@ -0,0 +1,46 @@ +/************************************************************************ + * lib/math/lib_log2.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double log2(double x) +{ + return (log(x) / M_LN2); +} +#endif diff --git a/nuttx/libc/math/lib_log2f.c b/nuttx/libc/math/lib_log2f.c new file mode 100644 index 000000000..e160ca59e --- /dev/null +++ b/nuttx/libc/math/lib_log2f.c @@ -0,0 +1,41 @@ +/************************************************************************ + * lib/math/lib_log2f.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float log2f(float x) +{ + return (logf(x) / M_LN2); +} diff --git a/nuttx/libc/math/lib_log2l.c b/nuttx/libc/math/lib_log2l.c new file mode 100644 index 000000000..21d26d4d7 --- /dev/null +++ b/nuttx/libc/math/lib_log2l.c @@ -0,0 +1,46 @@ +/************************************************************************ + * lib/math/lib_log2l.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double log2l(long double x) +{ + return (logl(x) / M_LN2); +} +#endif diff --git a/nuttx/libc/math/lib_logf.c b/nuttx/libc/math/lib_logf.c new file mode 100644 index 000000000..1d31aa0c0 --- /dev/null +++ b/nuttx/libc/math/lib_logf.c @@ -0,0 +1,77 @@ +/************************************************************************ + * lib/math/lib_logf.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <math.h> +#include <float.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float logf(float x) +{ + float y, y_old, ey, epsilon; + + y = 0.0; + y_old = 1.0; + epsilon = FLT_EPSILON; + + while (y > y_old + epsilon || y < y_old - epsilon) + { + y_old = y; + ey = exp(y); + y -= (ey - x) / ey; + + if (y > 700.0) + { + y = 700.0; + } + + if (y < -700.0) + { + y = -700.0; + } + + epsilon = (fabs(y) > 1.0) ? fabs(y) * FLT_EPSILON : FLT_EPSILON; + } + + if (y == 700.0) + { + return INFINITY; + } + + if (y == -700.0) + { + return INFINITY; + } + + return y; +} diff --git a/nuttx/libc/math/lib_logl.c b/nuttx/libc/math/lib_logl.c new file mode 100644 index 000000000..577f9cee2 --- /dev/null +++ b/nuttx/libc/math/lib_logl.c @@ -0,0 +1,80 @@ +/************************************************************************ + * lib/math/lib_lol.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> +#include <float.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double logl(long double x) +{ + long double y, y_old, ey, epsilon; + + y = 0.0; + y_old = 1.0; + epsilon = LDBL_EPSILON; + + while (y > y_old + epsilon || y < y_old - epsilon) + { + y_old = y; + ey = expl(y); + y -= (ey - x) / ey; + + if (y > 700.0) + { + y = 700.0; + } + + if (y < -700.0) + { + y = -700.0; + } + } + + if (y == 700.0) + { + return INFINITY; + } + + if (y == -700.0) + { + return INFINITY; + } + + return y; +} +#endif diff --git a/nuttx/libc/math/lib_modf.c b/nuttx/libc/math/lib_modf.c new file mode 100644 index 000000000..9dc6284c2 --- /dev/null +++ b/nuttx/libc/math/lib_modf.c @@ -0,0 +1,58 @@ +/************************************************************************ + * lib/math/lib_modf.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <stdint.h> +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double modf(double x, double *iptr) +{ + if (fabs(x) >= 4503599627370496.0) + { + *iptr = x; + return 0.0; + } + else if (fabs(x) < 1.0) + { + *iptr = 0.0; + return x; + } + else + { + *iptr = (double)(int64_t) x; + return (x - *iptr); + } +} +#endif diff --git a/nuttx/libc/math/lib_modff.c b/nuttx/libc/math/lib_modff.c new file mode 100644 index 000000000..4eec2ae17 --- /dev/null +++ b/nuttx/libc/math/lib_modff.c @@ -0,0 +1,55 @@ +/************************************************************************ + * lib/math/lib_modff.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float modff(float x, float *iptr) +{ + if (fabsf(x) >= 8388608.0) + { + *iptr = x; + return 0.0; + } + else if (fabs(x) < 1.0) + { + *iptr = 0.0; + return x; + } + else + { + *iptr = (float)(int)x; + return (x - *iptr); + } +} diff --git a/nuttx/libc/math/lib_modfl.c b/nuttx/libc/math/lib_modfl.c new file mode 100644 index 000000000..3b04571f3 --- /dev/null +++ b/nuttx/libc/math/lib_modfl.c @@ -0,0 +1,61 @@ +/************************************************************************ + * lib/math/lib_modfl.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <stdint.h> +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double modfl(long double x, long double *iptr) +{ + if (fabs(x) >= 4503599627370496.0) + { + *iptr = x; + return 0.0; + } + else if (fabs(x) < 1.0) + { + *iptr = 0.0; + return x; + } + else + { + *iptr = (long double)(int64_t) x; + return (x - *iptr); + } +} +#endif diff --git a/nuttx/libc/math/lib_pow.c b/nuttx/libc/math/lib_pow.c new file mode 100644 index 000000000..af0a55d32 --- /dev/null +++ b/nuttx/libc/math/lib_pow.c @@ -0,0 +1,46 @@ +/************************************************************************ + * lib/math/lib_pow.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double pow(double b, double e) +{ + return exp(e * log(b)); +} +#endif diff --git a/nuttx/libc/math/lib_powf.c b/nuttx/libc/math/lib_powf.c new file mode 100644 index 000000000..a43f9cf82 --- /dev/null +++ b/nuttx/libc/math/lib_powf.c @@ -0,0 +1,41 @@ +/************************************************************************ + * lib/math/lib_powf.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float powf(float b, float e) +{ + return expf(e * logf(b)); +} diff --git a/nuttx/libc/math/lib_powl.c b/nuttx/libc/math/lib_powl.c new file mode 100644 index 000000000..f5fbf042e --- /dev/null +++ b/nuttx/libc/math/lib_powl.c @@ -0,0 +1,46 @@ +/************************************************************************ + * lib/math/lib_powl.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double powl(long double b, long double e) +{ + return expl(e * logl(b)); +} +#endif diff --git a/nuttx/libc/math/lib_sin.c b/nuttx/libc/math/lib_sin.c new file mode 100644 index 000000000..c04d6b88b --- /dev/null +++ b/nuttx/libc/math/lib_sin.c @@ -0,0 +1,114 @@ +/************************************************************************ + * lib/math/lib_sin.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <sys/types.h> +#include <math.h> + +#ifdef CONFIG_HAVE_DOUBLE + +/************************************************************************ + * Private Data + ************************************************************************/ + +static double _dbl_inv_fact[] = +{ + 1.0 / 1.0, // 1 / 1! + 1.0 / 6.0, // 1 / 3! + 1.0 / 120.0, // 1 / 5! + 1.0 / 5040.0, // 1 / 7! + 1.0 / 362880.0, // 1 / 9! + 1.0 / 39916800.0, // 1 / 11! + 1.0 / 6227020800.0, // 1 / 13! + 1.0 / 1307674368000.0, // 1 / 15! + 1.0 / 355687428096000.0, // 1 / 17! + 1.0 / 121645100408832000.0, // 1 / 19! +}; + +/************************************************************************ + * Public Functions + ************************************************************************/ + +double sin(double x) +{ + double x_squared; + double sin_x; + size_t i; + + /* Move x to [-pi, pi) */ + + x = fmod(x, 2 * M_PI); + if (x >= M_PI) + { + x -= 2 * M_PI; + } + + if (x < -M_PI) + { + x += 2 * M_PI; + } + + /* Move x to [-pi/2, pi/2) */ + + if (x >= M_PI_2) + { + x = M_PI - x; + } + + if (x < -M_PI_2) + { + x = -M_PI - x; + } + + x_squared = x * x; + sin_x = 0.0; + + /* Perform Taylor series approximation for sin(x) with ten terms */ + + for (i = 0; i < 10; i++) + { + if (i % 2 == 0) + { + sin_x += x * _dbl_inv_fact[i]; + } + else + { + sin_x -= x * _dbl_inv_fact[i]; + } + + x *= x_squared; + } + + return sin_x; +} +#endif diff --git a/nuttx/libc/math/lib_sinf.c b/nuttx/libc/math/lib_sinf.c new file mode 100644 index 000000000..e298bbba4 --- /dev/null +++ b/nuttx/libc/math/lib_sinf.c @@ -0,0 +1,104 @@ +/************************************************************************ + * lib/math/lib_sinf.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <sys/types.h> +#include <math.h> + +/************************************************************************ + * Private Data + ************************************************************************/ + +static float _flt_inv_fact[] = +{ + 1.0 / 1.0, // 1 / 1! + 1.0 / 6.0, // 1 / 3! + 1.0 / 120.0, // 1 / 5! + 1.0 / 5040.0, // 1 / 7! + 1.0 / 362880.0, // 1 / 9! + 1.0 / 39916800.0, // 1 / 11! +}; + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float sinf(float x) +{ + float x_squared; + float sin_x; + size_t i; + + /* Move x to [-pi, pi) */ + + x = fmodf(x, 2 * M_PI); + if (x >= M_PI) + { + x -= 2 * M_PI; + } + + if (x < -M_PI) + { + x += 2 * M_PI; + } + + /* Move x to [-pi/2, pi/2) */ + + if (x >= M_PI_2) + { + x = M_PI - x; + } + + if (x < -M_PI_2) + { + x = -M_PI - x; + } + + x_squared = x * x; + sin_x = 0.0; + + /* Perform Taylor series approximation for sin(x) with six terms */ + + for (i = 0; i < 6; i++) + { + if (i % 2 == 0) + { + sin_x += x * _flt_inv_fact[i]; + } + else + { + sin_x -= x * _flt_inv_fact[i]; + } + + x *= x_squared; + } + + return sin_x; +} diff --git a/nuttx/libc/math/lib_sinh.c b/nuttx/libc/math/lib_sinh.c new file mode 100644 index 000000000..f33852433 --- /dev/null +++ b/nuttx/libc/math/lib_sinh.c @@ -0,0 +1,47 @@ +/************************************************************************ + * lib/math/lib_sinh.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double sinh(double x) +{ + x = exp(x); + return ((x - (1.0 / x)) / 2.0); +} +#endif diff --git a/nuttx/libc/math/lib_sinhf.c b/nuttx/libc/math/lib_sinhf.c new file mode 100644 index 000000000..e15cb14dc --- /dev/null +++ b/nuttx/libc/math/lib_sinhf.c @@ -0,0 +1,42 @@ +/************************************************************************ + * lib/math/lib_sinhf.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float sinhf(float x) +{ + x = expf(x); + return ((x - (1.0 / x)) / 2.0); +} diff --git a/nuttx/libc/math/lib_sinhl.c b/nuttx/libc/math/lib_sinhl.c new file mode 100644 index 000000000..b0fea2914 --- /dev/null +++ b/nuttx/libc/math/lib_sinhl.c @@ -0,0 +1,47 @@ +/************************************************************************ + * lib/math/lib_sinhl.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double sinhl(long double x) +{ + x = expl(x); + return ((x - (1.0 / x)) / 2.0); +} +#endif diff --git a/nuttx/libc/math/lib_sinl.c b/nuttx/libc/math/lib_sinl.c new file mode 100644 index 000000000..a69b548cb --- /dev/null +++ b/nuttx/libc/math/lib_sinl.c @@ -0,0 +1,114 @@ +/************************************************************************ + * lib/math/lib_sinl.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <sys/types.h> +#include <math.h> + +#ifdef CONFIG_HAVE_LONG_DOUBLE + +/************************************************************************ + * Private Data + ************************************************************************/ + +static long double _ldbl_inv_fact[] = +{ + 1.0 / 1.0, // 1 / 1! + 1.0 / 6.0, // 1 / 3! + 1.0 / 120.0, // 1 / 5! + 1.0 / 5040.0, // 1 / 7! + 1.0 / 362880.0, // 1 / 9! + 1.0 / 39916800.0, // 1 / 11! + 1.0 / 6227020800.0, // 1 / 13! + 1.0 / 1307674368000.0, // 1 / 15! + 1.0 / 355687428096000.0, // 1 / 17! + 1.0 / 121645100408832000.0, // 1 / 19! +}; + +/************************************************************************ + * Public Functions + ************************************************************************/ + +long double sinl(long double x) +{ + long double x_squared; + long double sin_x; + size_t i; + + /* Move x to [-pi, pi) */ + + x = fmodl(x, 2 * M_PI); + if (x >= M_PI) + { + x -= 2 * M_PI; + } + + if (x < -M_PI) + { + x += 2 * M_PI; + } + + /* Move x to [-pi/2, pi/2) */ + + if (x >= M_PI_2) + { + x = M_PI - x; + } + + if (x < -M_PI_2) + { + x = -M_PI - x; + } + + x_squared = x * x; + sin_x = 0.0; + + /* Perform Taylor series approximation for sin(x) with ten terms */ + + for (i = 0; i < 10; i++) + { + if (i % 2 == 0) + { + sin_x += x * _ldbl_inv_fact[i]; + } + else + { + sin_x -= x * _ldbl_inv_fact[i]; + } + + x *= x_squared; + } + + return sin_x; +} +#endif diff --git a/nuttx/libc/math/lib_sqrt.c b/nuttx/libc/math/lib_sqrt.c new file mode 100644 index 000000000..d77997f7c --- /dev/null +++ b/nuttx/libc/math/lib_sqrt.c @@ -0,0 +1,99 @@ +/************************************************************************ + * lib/math/lib_sqrt.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> +#include <errno.h> + +#include "lib_internal.h" + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double sqrt(double x) +{ + long double y, y1; + + if (x < 0.0) + { + errno = EDOM; + return NAN; + } + + if (isnan(x)) + { + return NAN; + } + + if (isinf(x)) + { + return INFINITY; + } + + if (x == 0.0) + { + return 0.0; + } + + /* Guess square root (using bit manipulation) */ + + y = lib_sqrtapprox(x); + + /* Perform four iterations of approximation. This number (4) is + * definitely optimal + */ + + y = 0.5 * (y + x / y); + y = 0.5 * (y + x / y); + y = 0.5 * (y + x / y); + y = 0.5 * (y + x / y); + + /* If guess was terribe (out of range of float). Repeat approximation + * until convergence. + */ + + if (y * y < x - 1.0 || y * y > x + 1.0) + { + y1 = -1.0; + while (y != y1) + { + y1 = y; + y = 0.5 * (y + x / y); + } + } + + return y; +} +#endif diff --git a/nuttx/libc/math/lib_sqrtf.c b/nuttx/libc/math/lib_sqrtf.c new file mode 100644 index 000000000..81817a040 --- /dev/null +++ b/nuttx/libc/math/lib_sqrtf.c @@ -0,0 +1,84 @@ +/************************************************************************ + * lib/math/lib_sqrtf.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> +#include <errno.h> + +#include "lib_internal.h" + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float sqrtf(float x) +{ + float y; + + /* Filter out invalid/trivial inputs */ + + if (x < 0.0) + { + errno = EDOM; + return NAN; + } + + if (isnan(x)) + { + return NAN; + } + + if (isinf(x)) + { + return INFINITY; + } + + if (x == 0.0) + { + return 0.0; + } + + /* Guess square root (using bit manipulation) */ + + y = lib_sqrtapprox(x); + + /* Perform three iterations of approximation. This number (3) is + * definitely optimal + */ + + y = 0.5 * (y + x / y); + y = 0.5 * (y + x / y); + y = 0.5 * (y + x / y); + + return y; +} diff --git a/nuttx/libc/math/lib_sqrtl.c b/nuttx/libc/math/lib_sqrtl.c new file mode 100644 index 000000000..6674fe50f --- /dev/null +++ b/nuttx/libc/math/lib_sqrtl.c @@ -0,0 +1,101 @@ +/************************************************************************ + * lib/math/lib_sqrtl.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009-2011 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> +#include <errno.h> + +#include "lib_internal.h" + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double sqrtl(long double x) +{ + long double y, y1; + + /* Filter out invalid/trivial inputs */ + + if (x < 0.0) + { + errno = EDOM; + return NAN; + } + + if (isnan(x)) + { + return NAN; + } + + if (isinf(x)) + { + return INFINITY; + } + + if (x == 0.0) + { + return 0.0; + } + + /* Guess square root (using bit manipulation) */ + + y = lib_sqrtapprox(x); + + /* Perform four iterations of approximation. This number (4) is + * definitely optimal + */ + + y = 0.5 * (y + x / y); + y = 0.5 * (y + x / y); + y = 0.5 * (y + x / y); + y = 0.5 * (y + x / y); + + /* If guess was terribe (out of range of float). Repeat approximation + * until convergence + */ + + if (y * y < x - 1.0 || y * y > x + 1.0) + { + y1 = -1.0; + while (y != y1) + { + y1 = y; + y = 0.5 * (y + x / y); + } + } + + return y; +} +#endif diff --git a/nuttx/libc/math/lib_tan.c b/nuttx/libc/math/lib_tan.c new file mode 100644 index 000000000..bce14b327 --- /dev/null +++ b/nuttx/libc/math/lib_tan.c @@ -0,0 +1,46 @@ +/************************************************************************ + * lib/math/lib_tan.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double tan(double x) +{ + return (sin(x) / cos(x)); +} +#endif diff --git a/nuttx/libc/math/lib_tanf.c b/nuttx/libc/math/lib_tanf.c new file mode 100644 index 000000000..3db3bda26 --- /dev/null +++ b/nuttx/libc/math/lib_tanf.c @@ -0,0 +1,41 @@ +/************************************************************************ + * lib/math/lib_tanf.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float tanf(float x) +{ + return (sinf(x) / cosf(x)); +} diff --git a/nuttx/libc/math/lib_tanh.c b/nuttx/libc/math/lib_tanh.c new file mode 100644 index 000000000..46fddd06d --- /dev/null +++ b/nuttx/libc/math/lib_tanh.c @@ -0,0 +1,49 @@ +/************************************************************************ + * lib/math/lib_tanh.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double tanh(double x) +{ + double x0 = exp(x); + double x1 = 1.0 / x0; + + return ((x0 + x1) / (x0 - x1)); +} +#endif diff --git a/nuttx/libc/math/lib_tanhf.c b/nuttx/libc/math/lib_tanhf.c new file mode 100644 index 000000000..94d15cc60 --- /dev/null +++ b/nuttx/libc/math/lib_tanhf.c @@ -0,0 +1,44 @@ +/************************************************************************ + * lib/math/lib_tanhf.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float tanhf(float x) +{ + float x0 = expf(x); + float x1 = 1.0 / x0; + + return ((x0 + x1) / (x0 - x1)); +} diff --git a/nuttx/libc/math/lib_tanhl.c b/nuttx/libc/math/lib_tanhl.c new file mode 100644 index 000000000..23c11d667 --- /dev/null +++ b/nuttx/libc/math/lib_tanhl.c @@ -0,0 +1,49 @@ +/************************************************************************ + * lib/math/lib_tanhl.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double tanhl(long double x) +{ + long double x0 = exp(x); + long double x1 = 1.0 / x0; + + return ((x0 + x1) / (x0 - x1)); +} +#endif diff --git a/nuttx/libc/math/lib_tanl.c b/nuttx/libc/math/lib_tanl.c new file mode 100644 index 000000000..4973aa073 --- /dev/null +++ b/nuttx/libc/math/lib_tanl.c @@ -0,0 +1,46 @@ +/************************************************************************ + * lib/math/lib_tanl.c + * + * This file is a part of NuttX: + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Ported by: Darcy Gong + * + * It derives from the Rhombs OS math library by Nick Johnson which has + * a compatibile, MIT-style license: + * + * Copyright (C) 2009, 2010 Nick Johnson <nickbjohnson4224 at gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + ************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double tanl(long double x) +{ + return (sinl(x) / cosl(x)); +} +#endif |