glibc/sysdeps/ieee754/ldbl-96/w_expl.c

35 lines
1.2 KiB
C

/* Copyright (C) 2011, 2012 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>
/* wrapper expl */
long double
__expl (long double x)
{
long double z = __ieee754_expl (x);
if (__builtin_expect (!__finitel (z) || z == 0, 0)
&& __finitel (x) && _LIB_VERSION != _IEEE_)
return __kernel_standard_l (x, x, 206 + !!__signbitl (x));
return z;
}
hidden_def (__expl)
weak_alias (__expl, expl)