diff options
Diffstat (limited to 'nuttx/lib/math/lib_floor.c')
-rw-r--r-- | nuttx/lib/math/lib_floor.c | 53 |
1 files changed, 34 insertions, 19 deletions
diff --git a/nuttx/lib/math/lib_floor.c b/nuttx/lib/math/lib_floor.c index a6979ac8a..895b9a503 100644 --- a/nuttx/lib/math/lib_floor.c +++ b/nuttx/lib/math/lib_floor.c @@ -1,4 +1,14 @@ -/* +/************************************************************************ + * 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 @@ -12,26 +22,31 @@ * 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> +/************************************************************************ + * Included Files + ************************************************************************/ -float floorf(float x) { - modff(x, &x); - if (x < 0.0) x -= 1.0; - return x; -} +#include <nuttx/config.h> +#include <nuttx/compiler.h> -double floor(double x) { - modf(x, &x); - if (x < 0.0) x -= 1.0; - return x; -} +#include <math.h> -long double floorl(long double x) { - modfl(x, &x); - if (x < 0.0) x -= 1.0; - return x; -} +/************************************************************************ + * Public Functions + ************************************************************************/ +#if CONFIG_HAVE_DOUBLE +double floor(double x) +{ + modf(x, &x); + if (x < 0.0) + { + x -= 1.0; + } + + return x; +} +#endif |