sysdeps/sparc/sparc32/e_sqrt.c

   1 /* Copyright (C) 1991, 1992, 1997, 2011 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, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <errno.h>
  20 #include <math.h>
  21
  22 #ifndef __GNUC__
  23   #error This file uses GNU C extensions; you must compile with GCC.
  24 #endif
  25
  26 /* Return the square root of X.  */
  27 double
  28 __ieee754_sqrt (x)
  29      double x;
  30 {
  31   register double result;
  32   asm ("fsqrtd %1, %0" : "=f" (result) : "f" (x));
  33   return result;
  34 }
  35 strong_alias (__ieee754_sqrt, __sqrt_finite)