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

   1 /* Return current rounding direction within libc.  IA64 version.
   2    Copyright (C) 1999-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef IA64_GET_ROUNDING_MODE_H
  20 #define IA64_GET_ROUNDING_MODE_H        1
  21
  22 #include <fenv.h>
  23
  24 /* Return the floating-point rounding mode.  */
  25
  26 static inline int
  27 get_rounding_mode (void)
  28 {
  29   fenv_t fpsr;
  30
  31   __asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (fpsr));
  32
  33   return (fpsr >> 10) & 3;
  34 }
  35
  36 #endif /* get-rounding-mode.h */