* global.c (global_alloc): Make it static.
[official-gcc.git] / libgfortran / config / fpu-aix.h
blobf2fa0a587b78fbfe8bbeb4b570b351cbf7b9d64d
1 /* AIX FPU-related code.
2 Copyright 2005 Free Software Foundation, Inc.
3 Contributed by Francois-Xavier Coudert <coudert@clipper.ens.fr>
5 This file is part of the GNU Fortran 95 runtime library (libgfortran).
7 Libgfortran is free software; you can redistribute it and/or
8 modify it under the terms of the GNU General Public
9 License as published by the Free Software Foundation; either
10 version 2 of the License, or (at your option) any later version.
12 In addition to the permissions in the GNU General Public License, the
13 Free Software Foundation gives you unlimited permission to link the
14 compiled version of this file into combinations with other programs,
15 and to distribute those combinations without any restriction coming
16 from the use of this file. (The General Public License restrictions
17 do apply in other respects; for example, they cover modification of
18 the file, and distribution when not linked into a combine
19 executable.)
21 Libgfortran is distributed in the hope that it will be useful,
22 but WITHOUT ANY WARRANTY; without even the implied warranty of
23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 GNU General Public License for more details.
26 You should have received a copy of the GNU General Public
27 License along with libgfortran; see the file COPYING. If not,
28 write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
29 Boston, MA 02110-1301, USA. */
32 /* FPU-related code for AIX. */
33 #ifdef HAVE_FPTRAP_H
34 #include <fptrap.h>
35 #endif
37 #ifdef HAVE_FLOAT_H
38 #include <float.h>
39 #endif
41 void
42 set_fpu (void)
44 fptrap_t mode = 0;
46 if (options.fpe & GFC_FPE_INVALID)
47 #ifdef TRP_INVALID
48 mode |= TRP_INVALID;
49 #else
50 st_printf ("Fortran runtime warning: IEEE 'invalid operation' "
51 "exception not supported.\n");
52 #endif
54 if (options.fpe & GFC_FPE_DENORMAL)
55 st_printf ("Fortran runtime warning: IEEE 'denormal number' "
56 "exception not supported.\n");
58 if (options.fpe & GFC_FPE_ZERO)
59 #ifdef TRP_DIV_BY_ZERO
60 mode |= TRP_DIV_BY_ZERO;
61 #else
62 st_printf ("Fortran runtime warning: IEEE 'division by zero' "
63 "exception not supported.\n");
64 #endif
66 if (options.fpe & GFC_FPE_OVERFLOW)
67 #ifdef TRP_OVERFLOW
68 mode |= TRP_OVERFLOW;
69 #else
70 st_printf ("Fortran runtime warning: IEEE 'overflow' "
71 "exception not supported.\n");
72 #endif
74 if (options.fpe & GFC_FPE_UNDERFLOW)
75 #ifdef TRP_UNDERFLOW
76 mode |= TRP_UNDERFLOW;
77 #else
78 st_printf ("Fortran runtime warning: IEEE 'underflow' "
79 "exception not supported.\n");
80 #endif
82 if (options.fpe & GFC_FPE_PRECISION)
83 #ifdef TRP_UNDERFLOW
84 mode |= TRP_UNDERFLOW;
85 #else
86 st_printf ("Fortran runtime warning: IEEE 'loss of precision' "
87 "exception not supported.\n");
88 #endif
90 fp_trap(FP_TRAP_SYNC);
91 fp_enable(mode);