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


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/* Determine floating-point rounding mode within libc.  Alpha version.
   Copyright (C) 2012-2015 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#ifndef ALPHA_GET_ROUNDING_MODE_H
#define ALPHA_GET_ROUNDING_MODE_H	1

#include <fenv.h>
#include <fenv_libc.h>

/* Return the floating-point rounding mode.  */

static inline int
get_rounding_mode (void)
{
  unsigned long fpcr;
  __asm__ __volatile__("excb; mf_fpcr %0" : "=f"(fpcr));
  return (fpcr >> FPCR_ROUND_SHIFT) & 3;
}

#endif /* get-rounding-mode.h */