[thirdparty/glibc.git] / sysdeps / ieee754 / ldbl-96 / w_expl.c

/* Copyright (C) 2011-2017 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 (!isfinite (z) || z == 0, 0)
      && isfinite (x) && _LIB_VERSION != _IEEE_)
    return __kernel_standard_l (x, x, 206 + !!signbit (x));

  return z;
}
hidden_def (__expl)
weak_alias (__expl, expl)
Commit	Line	Data
bfff8b1b	1	/* Copyright (C) 2011-2017 Free Software Foundation, Inc.
bcf01e6d UD	2	This file is part of the GNU C Library.
	3	Contributed by Ulrich Drepper <drepper@gmail.com>, 2011.
	4
	5	The GNU C Library is free software; you can redistribute it and/or
	6	modify it under the terms of the GNU Lesser General Public
	7	License as published by the Free Software Foundation; either
	8	version 2.1 of the License, or (at your option) any later version.
	9
	10	The GNU C Library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	Lesser General Public License for more details.
	14
	15	You should have received a copy of the GNU Lesser General Public
59ba27a6 PE	16	License along with the GNU C Library; if not, see
59ba27a6 PE	17	<http://www.gnu.org/licenses/>. */
bcf01e6d UD	18
	19	#include <math.h>
	20	#include <math_private.h>
	21
bcf01e6d UD	22	/* wrapper expl */
	23	long double
	24	__expl (long double x)
ee188d55	25	{
41498f4d	26	long double z = __ieee754_expl (x);
d81f90cc WD	27	if (__builtin_expect (!isfinite (z) \|\| z == 0, 0)
	28	&& isfinite (x) && _LIB_VERSION != _IEEE_)
	29	return __kernel_standard_l (x, x, 206 + !!signbit (x));
bcf01e6d	30
41498f4d	31	return z;
ee188d55	32	}
b7805d0b	33	hidden_def (__expl)
ee188d55	34	weak_alias (__expl, expl)