sysdeps/sparc/fpu/fesetenv.c


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
43

/* Install given floating-point environment.
   Copyright (C) 1997 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 Library General Public License as
   published by the Free Software Foundation; either version 2 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#include <fenv.h>

void
fesetenv (const fenv_t *envp)
{
  fenv_t dummy;

  /* Put these constants in memory explicitly, so as to cope with a
     -fPIC bug as of gcc 970624.  Making them automatic is quicker
     than loading up the pic register in this instance.  */

  if (envp == FE_DFL_ENV)
    {
      dummy = 0;
      envp = &dummy;
    }
  else if (envp == FE_NOMASK_ENV)
    {
      dummy = 0x1f << 23;
      envp = &dummy;
    }

  __fenv_ldfsr (*envp);
}