[PATCH 3/6] Split sparc out of main Linux kernel-features.h.
[glibc.git] / math / w_sqrt.c
blob75266d3b96e730d254eee76c9f3d62a458edf374
1 /* Copyright (C) 2011-2014 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, see
17 <http://www.gnu.org/licenses/>. */
19 #include <math.h>
20 #include <math_private.h>
23 /* wrapper sqrt */
24 double
25 __sqrt (double x)
27 if (__builtin_expect (isless (x, 0.0), 0) && _LIB_VERSION != _IEEE_)
28 return __kernel_standard (x, x, 26); /* sqrt(negative) */
30 return __ieee754_sqrt (x);
32 weak_alias (__sqrt, sqrt)
33 #ifdef NO_LONG_DOUBLE
34 strong_alias (__sqrt, __sqrtl)
35 weak_alias (__sqrt, sqrtl)
36 #endif