1 /* Compute square root for double. ARM version.
2 Copyright (C) 2016-2017 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/>. */
21 /* Use architecture-indendent sqrt implementation. */
22 # include <sysdeps/ieee754/dbl-64/e_sqrt.c>
26 /* Use VFP square root instruction. */
31 __ieee754_sqrt (double x
)
35 asm ("vsqrt.f64 %P0, %P1" : "=w" (ret
) : "w" (x
));
37 /* As in GCC, for VFP9 Erratum 760019 avoid overwriting the
39 asm ("vsqrt.f64 %P0, %P1" : "=&w" (ret
) : "w" (x
));
43 strong_alias (__ieee754_sqrt
, __sqrt_finite
)