sysdeps/ia64/fpu/get-rounding-mode.h

   1 /* Return current rounding direction within libc.  IA64 version.
   2    Copyright (C) 1999-2018 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Christian Boissat <Christian.Boissat@cern.ch>, 1999.
   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 #ifndef IA64_GET_ROUNDING_MODE_H
  21 #define IA64_GET_ROUNDING_MODE_H        1
  22
  23 #include <fenv.h>
  24
  25 /* Return the floating-point rounding mode.  */
  26
  27 static inline int
  28 get_rounding_mode (void)
  29 {
  30   fenv_t fpsr;
  31
  32   __asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (fpsr));
  33
  34   return (fpsr >> 10) & 3;
  35 }
  36
  37 #endif /* get-rounding-mode.h */