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Diffstat (limited to 'nuttx/lib/math/lib_floor.c')
-rw-r--r-- | nuttx/lib/math/lib_floor.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/nuttx/lib/math/lib_floor.c b/nuttx/lib/math/lib_floor.c new file mode 100644 index 000000000..a6979ac8a --- /dev/null +++ b/nuttx/lib/math/lib_floor.c @@ -0,0 +1,37 @@ +/* + * 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. + */ + +#include <apps/math.h> +#include <float.h> + +float floorf(float x) { + modff(x, &x); + if (x < 0.0) x -= 1.0; + return x; +} + +double floor(double x) { + modf(x, &x); + if (x < 0.0) x -= 1.0; + return x; +} + +long double floorl(long double x) { + modfl(x, &x); + if (x < 0.0) x -= 1.0; + return x; +} + |