sysdeps/sparc/sparc32/e_sqrt.c

   1 /* Copyright (C) 1991-2019 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <math.h>
  20
  21 #ifndef __GNUC__
  22   #error This file uses GNU C extensions; you must compile with GCC.
  23 #endif
  24
  25 /* Return the square root of X.  */
  26 double
  27 __ieee754_sqrt (double x)
  28 {
  29   register double result;
  30   asm ("fsqrtd %1, %0" : "=f" (result) : "f" (x));
  31   return result;
  32 }
  33 strong_alias (__ieee754_sqrt, __sqrt_finite)