1
/* w_expl.c -- long double version of w_exp.c.
2
* Conversion to long double by Ulrich Drepper,
3
* Cygnus Support, drepper@cygnus.com.
7
* ====================================================
8
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
10
* Developed at SunPro, a Sun Microsystems, Inc. business.
11
* Permission to use, copy, modify, and distribute this
12
* software is freely granted, provided that this notice
14
* ====================================================
17
#if defined(LIBM_SCCS) && !defined(lint)
18
static char rcsid[] = "$NetBSD: $";
26
#include "math_private.h"
1
/* Copyright (C) 2011 Free Software Foundation, Inc.
2
This file is part of the GNU C Library.
3
Contributed by Ulrich Drepper <drepper@gmail.com>, 2011.
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.
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.
15
You should have received a copy of the GNU Lesser General Public
16
License along with the GNU C Library; if not, write to the Free
17
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21
#include <math_private.h>
29
23
static const long double
33
24
o_threshold= 1.135652340629414394949193107797076489134e4,
34
25
/* 0x400C, 0xB17217F7, 0xD1CF79AC */
35
26
u_threshold= -1.140019167866942050398521670162263001513e4;
36
27
/* 0x400C, 0xB220C447, 0x69C201E8 */
39
long double __expl(long double x) /* wrapper exp */
41
long double __expl(x) /* wrapper exp */
32
__expl (long double x)
46
return __ieee754_expl(x);
49
z = __ieee754_expl(x);
50
if(_LIB_VERSION == _IEEE_) return z;
53
return __kernel_standard(x,x,206); /* exp overflow */
54
else if(x<u_threshold)
55
return __kernel_standard(x,x,207); /* exp underflow */
34
if (__builtin_expect (x > o_threshold, 0))
36
if (_LIB_VERSION != _IEEE_)
37
return __kernel_standard (x, x, 206);
39
else if (__builtin_expect (x < u_threshold, 0))
41
if (_LIB_VERSION != _IEEE_)
42
return __kernel_standard (x, x, 207);
45
return __ieee754_expl (x);
60
47
hidden_def (__expl)
61
48
weak_alias (__expl, expl)