ports/sysdeps/arm/get-rounding-mode.h


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42

/* Determine floating-point rounding mode within libc.  ARM version.
   Copyright (C) 2012 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 _ARM_GET_ROUNDING_MODE_H
#define _ARM_GET_ROUNDING_MODE_H	1

#include <arm-features.h>
#include <fenv.h>
#include <fpu_control.h>

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

static inline int
get_rounding_mode (void)
{
  if (ARM_HAVE_VFP)
    {
      fpu_control_t fc;

      _FPU_GETCW (fc);
      return fc & FE_TOWARDZERO;
    }
  else
    return FE_TONEAREST;
}

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