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[glibc.git] / sysdeps / x86_64 / fpu / e_sqrtf.c
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1 /* Square root of floating point number.
2 Copyright (C) 2002-2014 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, see
17 <http://www.gnu.org/licenses/>. */
19 #include <math_private.h>
21 #undef __ieee754_sqrtf
22 float
23 __ieee754_sqrtf (float x)
25 float res;
27 asm ("sqrtss %1, %0" : "=x" (res) : "xm" (x));
29 return res;
31 strong_alias (__ieee754_sqrtf, __sqrtf_finite)