sysdeps/s390/fpu/e_sqrtl.c

   1 /* Square root.  S/390 FPU version.
   2    Copyright (C) 2004-2013 Free Software Foundation, Inc.
   3    Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <math_private.h>
  21
  22 long double
  23 __ieee754_sqrtl (long double x)
  24 {
  25   long double res;
  26
  27   asm ( "sqxbr %0,%1" : "=f" (res) : "f" (x) );
  28   return res;
  29 }
  30 strong_alias (__ieee754_sqrtl, __sqrtl_finite)