glibc/math/w_sqrtl_compat.c

38 lines
1.2 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/>. */
#define NO_MATH_REDIRECT
#include <math.h>
#include <math_private.h>
#include <math-svid-compat.h>
#include <libm-alias-ldouble.h>
#if LIBM_SVID_COMPAT
/* wrapper sqrtl */
long double
__sqrtl (long double x)
{
if (__builtin_expect (isless (x, 0.0L), 0) && _LIB_VERSION != _IEEE_)
return __kernel_standard_l (x, x, 226); /* sqrt(negative) */
return __ieee754_sqrtl (x);
}
libm_alias_ldouble (__sqrt, sqrt)
#endif