1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
/* Copyright (C) 2011 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <math.h>
#include <math_private.h>
static const float
o_threshold= 8.8722831726e+01, /* 0x42b17217 */
u_threshold= -1.0397208405e+02; /* 0xc2cff1b5 */
/* wrapper expf */
float
__expf (float x)
{
if (__builtin_expect (x > o_threshold, 0))
{
if (_LIB_VERSION != _IEEE_)
return __kernel_standard_f (x, x, 106);
}
else if (__builtin_expect (x < u_threshold, 0))
{
if (_LIB_VERSION != _IEEE_)
return __kernel_standard_f (x, x, 107);
}
return __ieee754_expf (x);
}
hidden_def (__expf)
weak_alias (__expf, expf)
|
