aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/riscv/rvd/e_sqrt.c
blob: 7defcb5785c6cf3edb2f6fe800a6ee4965febb19 (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
/* Double precision floating point square root.  RISC-V version.
   Copyright (C) 2017-2020 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   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
   <https://www.gnu.org/licenses/>.  */

#include <math.h>
#include <libm-alias-finite.h>

double
__ieee754_sqrt (double x)
{
  asm ("fsqrt.d %0, %1" : "=f" (x) : "f" (x));
  return x;
}
libm_alias_finite (__ieee754_sqrt, __sqrt)