sysdeps/s390/fpu/e_sqrtl.c

   1 /* Square root.  S/390 FPU version.
   2    Copyright (C) 2004-2021 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    <https://www.gnu.org/licenses/>.  */
  19
  20 #include <math_private.h>
  21 #include <libm-alias-finite.h>
  22
  23 long double
  24 __ieee754_sqrtl (long double x)
  25 {
  26   long double res;
  27
  28   __asm__ ( "sqxbr %0,%1" : "=f" (res) : "f" (x) );
  29   return res;
  30 }
  31 libm_alias_finite (__ieee754_sqrtl, __sqrtl)