diff options
author | Gregory Nutt <gnutt@nuttx.org> | 2015-01-26 18:52:28 -0600 |
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committer | Gregory Nutt <gnutt@nuttx.org> | 2015-01-26 18:52:28 -0600 |
commit | bacbb4255c9408e3ce669563f2fb1d4067947c1a (patch) | |
tree | e6f2493bbab4117b96e5ad8ee8c86a14e9a05610 /nuttx/libc | |
parent | 69283d36b665ba41085021eb36066bfa074c6884 (diff) | |
download | px4-nuttx-bacbb4255c9408e3ce669563f2fb1d4067947c1a.tar.gz px4-nuttx-bacbb4255c9408e3ce669563f2fb1d4067947c1a.tar.bz2 px4-nuttx-bacbb4255c9408e3ce669563f2fb1d4067947c1a.zip |
Add math library support for copysign. From Brennan Ashton
Diffstat (limited to 'nuttx/libc')
-rw-r--r-- | nuttx/libc/math/Make.defs | 6 | ||||
-rw-r--r-- | nuttx/libc/math/lib_copysign.c | 59 | ||||
-rw-r--r-- | nuttx/libc/math/lib_copysignf.c | 57 | ||||
-rw-r--r-- | nuttx/libc/math/lib_copysignl.c | 59 |
4 files changed, 178 insertions, 3 deletions
diff --git a/nuttx/libc/math/Make.defs b/nuttx/libc/math/Make.defs index 0e40744a0..5f386f0ac 100644 --- a/nuttx/libc/math/Make.defs +++ b/nuttx/libc/math/Make.defs @@ -41,19 +41,19 @@ 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_rintf.c lib_roundf.c lib_sinf.c lib_sinhf.c lib_sqrtf.c lib_tanf.c -CSRCS += lib_tanhf.c lib_asinhf.c lib_acoshf.c lib_atanhf.c lib_erff.c +CSRCS += lib_tanhf.c lib_asinhf.c lib_acoshf.c lib_atanhf.c lib_erff.c lib_copysignf.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_rint.c lib_round.c lib_sin.c lib_sinh.c lib_sqrt.c lib_tan.c -CSRCS += lib_tanh.c lib_asinh.c lib_acosh.c lib_atanh.c lib_erf.c +CSRCS += lib_tanh.c lib_asinh.c lib_acosh.c lib_atanh.c lib_erf.c lib_copysign.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_rintl.c lib_roundl.c lib_sinl.c lib_sinhl.c lib_sqrtl.c lib_tanl.c -CSRCS += lib_tanhl.c lib_asinhl.c lib_acoshl.c lib_atanhl.c lib_erfl.c +CSRCS += lib_tanhl.c lib_asinhl.c lib_acoshl.c lib_atanhl.c lib_erfl.c lib_copysignl.c CSRCS += lib_libexpi.c lib_libsqrtapprox.c diff --git a/nuttx/libc/math/lib_copysign.c b/nuttx/libc/math/lib_copysign.c new file mode 100644 index 000000000..dde9cb198 --- /dev/null +++ b/nuttx/libc/math/lib_copysign.c @@ -0,0 +1,59 @@ +/**************************************************************************** + * libc/math/lib_copysign.c + * + * Copyright (C) 2015 Gregory Nutt. All rights reserved. + * Authors: Gregory Nutt <gnutt@nuttx.org> + * Dave Marples <dave@marples.net> + * + * 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. + * + ****************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_DOUBLE +double copysign(double x, double y) +{ + if (y < 0) + { + return -fabs(x); + } + return fabs(x); +} +#endif diff --git a/nuttx/libc/math/lib_copysignf.c b/nuttx/libc/math/lib_copysignf.c new file mode 100644 index 000000000..6eb63e148 --- /dev/null +++ b/nuttx/libc/math/lib_copysignf.c @@ -0,0 +1,57 @@ +/**************************************************************************** + * libc/math/lib_copysignf.c + * + * Copyright (C) 2015 Gregory Nutt. All rights reserved. + * Authors: Gregory Nutt <gnutt@nuttx.org> + * Dave Marples <dave@marples.net> + * + * 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. + * + ****************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +float copysignf(float x, float y) +{ + if (y < 0) + { + return -fabsf(x); + } + return fabsf(x); +} diff --git a/nuttx/libc/math/lib_copysignl.c b/nuttx/libc/math/lib_copysignl.c new file mode 100644 index 000000000..29c145a72 --- /dev/null +++ b/nuttx/libc/math/lib_copysignl.c @@ -0,0 +1,59 @@ +/**************************************************************************** + * libc/math/lib_copysignl.c + * + * Copyright (C) 2015 Gregory Nutt. All rights reserved. + * Authors: Gregory Nutt <gnutt@nuttx.org> + * Dave Marples <dave@marples.net> + * + * 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. + * + ****************************************************************************/ + +/************************************************************************ + * Included Files + ************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/compiler.h> + +#include <math.h> + +/************************************************************************ + * Public Functions + ************************************************************************/ + +#ifdef CONFIG_HAVE_LONG_DOUBLE +long double copysignl(long double x, long double y) +{ + if (y < 0) + { + return -fabsl(x); + } + return fabsl(x); +} +#endif |