glibc/math/w_fmod_compat.c

38 lines
1.3 KiB
C

/* Copyright (C) 2011-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gmail.com>, 2011.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <math.h>
#include <math_private.h>
#include <math-svid-compat.h>
#include <libm-alias-double.h>
#if LIBM_SVID_COMPAT
/* wrapper fmod */
double
__fmod (double x, double y)
{
if (__builtin_expect (isinf (x) || y == 0.0, 0)
&& _LIB_VERSION != _IEEE_ && !isnan (y) && !isnan (x))
/* fmod(+-Inf,y) or fmod(x,0) */
return __kernel_standard (x, y, 27);
return __ieee754_fmod (x, y);
}
libm_alias_double (__fmod, fmod)
#endif