blob: 8fc52d5eade4a332136f68953ba31cd90dd10bf5 (
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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
/* SysV FPU-related code (for systems not otherwise supported).
Copyright (C) 2005-2013 Free Software Foundation, Inc.
Contributed by Francois-Xavier Coudert <coudert@clipper.ens.fr>
This file is part of the GNU Fortran 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 SysV platforms with fpsetmask(). */
void
set_fpu (void)
{
int cw = 0;
if (options.fpe & GFC_FPE_INVALID)
#ifdef FP_X_INV
cw |= FP_X_INV;
#else
estr_write ("Fortran runtime warning: IEEE 'invalid operation' "
"exception not supported.\n");
#endif
if (options.fpe & GFC_FPE_DENORMAL)
#ifdef FP_X_DNML
cw |= FP_X_DNML;
#else
estr_write ("Fortran runtime warning: Floating point 'denormal operand' "
"exception not supported.\n");
#endif
if (options.fpe & GFC_FPE_ZERO)
#ifdef FP_X_DZ
cw |= FP_X_DZ;
#else
estr_write ("Fortran runtime warning: IEEE 'division by zero' "
"exception not supported.\n");
#endif
if (options.fpe & GFC_FPE_OVERFLOW)
#ifdef FP_X_OFL
cw |= FP_X_OFL;
#else
estr_write ("Fortran runtime warning: IEEE 'overflow' "
"exception not supported.\n");
#endif
if (options.fpe & GFC_FPE_UNDERFLOW)
#ifdef FP_X_UFL
cw |= FP_X_UFL;
#else
estr_write ("Fortran runtime warning: IEEE 'underflow' "
"exception not supported.\n");
#endif
if (options.fpe & GFC_FPE_INEXACT)
#ifdef FP_X_IMP
cw |= FP_X_IMP;
#else
estr_write ("Fortran runtime warning: IEEE 'inexact' "
"exception not supported.\n");
#endif
fpsetmask(cw);
}
int
get_fpu_except_flags (void)
{
int result;
fp_except_t set_excepts;
result = 0;
set_excepts = fpgetsticky ();
#ifdef FP_X_INV
if (set_excepts & FP_X_INV)
result |= GFC_FPE_INVALID;
#endif
#ifdef FP_X_DZ
if (set_excepts & FP_X_DZ)
result |= GFC_FPE_ZERO;
#endif
#ifdef FP_X_OFL
if (set_excepts & FP_X_OFL)
result |= GFC_FPE_OVERFLOW;
#endif
#ifdef FP_X_UFL
if (set_excepts & FP_X_UFL)
result |= GFC_FPE_UNDERFLOW;
#endif
#ifdef FP_X_DNML
if (set_excepts & FP_X_DNML)
result |= GFC_FPE_DENORMAL;
#endif
#ifdef FP_X_IMP
if (set_excepts & FP_X_IMP)
result |= GFC_FPE_INEXACT;
#endif
return result;
}
|