1 /* Single-precision floating point square root wrapper.
2 Copyright (C) 2004, 2007 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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"
22 #include <fenv_libc.h>
29 __sqrtf (float x) /* wrapper sqrtf */
32 __sqrtf (x) /* wrapper sqrtf */
37 return __ieee754_sqrtf (x);
40 /* Power4 (ISA V2.0) and above implement sqrtf in hardware. */
46 if (__builtin_expect (_LIB_VERSION == _IEEE_, 0))
49 if (__builtin_expect (x != x, 0))
52 if (__builtin_expect (x < 0.0, 0))
54 return (float) __kernel_standard ((double) x, (double) x, 126);
60 weak_alias (__sqrtf, sqrtf)