blob: db88af412eeac35bd1fd7fedd9a2025adb8d66f1 (
plain)
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
|
/* Copyright (C) 2011-2016 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 sqrtf */
float
sqrtf (float x)
{
#if __UCLIBC_HAS_FENV__
if (__builtin_expect (isless (x, 0.0f), 0) && _LIB_VERSION != _IEEE_)
return __kernel_standard_f (x, x, 126); /* sqrt(negative) */
#endif
return (float) __ieee754_sqrt ((double) x);
}
|
