summaryrefslogtreecommitdiff
path: root/libgfortran/config/fpu-aix.h
blob: 7d6f8dfcd7baea8bfe8f2d1118ac819be530225e (plain)
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
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
/* AIX FPU-related code.
   Copyright 2005, 2007, 2009 Free Software Foundation, Inc.
   Contributed by Francois-Xavier Coudert <coudert@clipper.ens.fr>

This file is part of the GNU Fortran 95 runtime library (libgfortran).

Libgfortran is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.

Libgfortran 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 General Public License for more details.

Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.

You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
<http://www.gnu.org/licenses/>.  */


/* FPU-related code for AIX.  */
#ifdef HAVE_FPTRAP_H
#include <fptrap.h>
#endif

void
set_fpu (void)
{
  fptrap_t mode = 0;

  if (options.fpe & GFC_FPE_INVALID)
#ifdef TRP_INVALID
    mode |= TRP_INVALID;
#else
    st_printf ("Fortran runtime warning: IEEE 'invalid operation' "
	       "exception not supported.\n");
#endif

  if (options.fpe & GFC_FPE_DENORMAL)
    st_printf ("Fortran runtime warning: IEEE 'denormal number' "
	       "exception not supported.\n");

  if (options.fpe & GFC_FPE_ZERO)
#ifdef TRP_DIV_BY_ZERO
    mode |= TRP_DIV_BY_ZERO;
#else
    st_printf ("Fortran runtime warning: IEEE 'division by zero' "
	       "exception not supported.\n");
#endif

  if (options.fpe & GFC_FPE_OVERFLOW)
#ifdef TRP_OVERFLOW
    mode |= TRP_OVERFLOW;
#else
    st_printf ("Fortran runtime warning: IEEE 'overflow' "
	       "exception not supported.\n");
#endif

  if (options.fpe & GFC_FPE_UNDERFLOW)
#ifdef TRP_UNDERFLOW
    mode |= TRP_UNDERFLOW;
#else
    st_printf ("Fortran runtime warning: IEEE 'underflow' "
	       "exception not supported.\n");
#endif

  if (options.fpe & GFC_FPE_PRECISION)
#ifdef TRP_UNDERFLOW
    mode |= TRP_UNDERFLOW;
#else
    st_printf ("Fortran runtime warning: IEEE 'loss of precision' "
	       "exception not supported.\n");
#endif

  fp_trap(FP_TRAP_SYNC);
  fp_enable(mode);
}