File: pwl_test.cc

package info (click to toggle)
ppl 0.10.2-8
  • links: PTS
  • area: main
  • in suites: squeeze
  • size: 37,976 kB
  • ctags: 16,947
  • sloc: cpp: 168,523; sh: 10,902; makefile: 6,807; perl: 6,208; ansic: 1,300; java: 1,260; ml: 703; sed: 101
file content (193 lines) | stat: -rw-r--r-- 4,841 bytes parent folder | download
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
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
/* Implementation of utility functions used in test programs.
   Copyright (C) 2001-2009 Roberto Bagnara <bagnara@cs.unipr.it>

This file is part of the Parma Watchdog Library (PWL).

The PWL 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.

The PWL 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.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307, USA.

For the most up-to-date information see the Parma Polyhedra Library
site: http://www.cs.unipr.it/ppl/ . */

#include "pwl_test.hh"
#include <csignal>
#include <iostream>
#include <exception>
#include <limits>
#ifdef PWL_HAVE_FENV_H
#include <fenv.h>
#endif

namespace {

void
unexpected_exception_handler() {
  std::cerr << "unexpected exception thrown" << std::endl;
  exit(1);
}

void
uncaught_exception_handler() {
  std::cerr << "uncaught exception" << std::endl;
  exit(1);
}

#if PWL_HAVE_DECL_SIGACTION

#if defined(PWL_HAVE_SIGINFO_T) && defined(SA_SIGINFO)

void
fpe_sigaction(int sig, siginfo_t* sip, void*) {
  if (sig != SIGFPE) {
    std::cerr << "fpe_handler called on signal different from SIGFPE"
	      << std::endl;
    exit(1);
  }
  const char* s = 0;
  switch (sip->si_code) {
  case FPE_INTDIV:
    s = "integer divide by zero";
    break;
  case FPE_INTOVF:
    s = "integer overflow";
    break;
  case FPE_FLTDIV:
    s = "floating point divide by zero";
    break;
  case FPE_FLTOVF:
    s = "floating point overflow";
    break;
  case FPE_FLTUND:
    s = "floating point underflow";
    break;
  case FPE_FLTRES:
    s = "floating point inexact result";
    break;
  case FPE_FLTINV:
    s = "floating point invalid operation";
    break;
  case FPE_FLTSUB:
    s = "subscript out of range";
    break;
  default:
    break;
  }
  if (s != 0)
    std::cerr << "SIGFPE caught (cause: " << s << ")"
	      << std::endl;
  else {
    std::cerr << "SIGFPE caught (unknown si_code " << sip->si_code << ")"
	      << std::endl;
#if defined(PWL_HAVE_FENV_H)
    std::cerr << "Inquire with fetestexcept(): ";
#ifdef FE_INEXACT
    if (fetestexcept(FE_INEXACT))
      std::cerr << "FE_INEXACT ";
#endif
#ifdef FE_DIVBYZERO
    if (fetestexcept(FE_DIVBYZERO))
      std::cerr << "FE_DIVBYZERO ";
#endif
#ifdef FE_UNDERFLOW
    if (fetestexcept(FE_UNDERFLOW))
      std::cerr << "FE_UNDERFLOW ";
#endif
#ifdef FE_OVERFLOW
    if (fetestexcept(FE_OVERFLOW))
      std::cerr << "FE_OVERFLOW ";
#endif
#if FE_INVALID
    if (fetestexcept(FE_INVALID))
      std::cerr << "FE_INVALID ";
#endif
    std::cerr << std::endl;
#endif // defined(PWL_HAVE_FENV_H)
  }
  exit(1);
}

#else // !defined(PWL_HAVE_SIGINFO_T) || !defined(SA_SIGINFO)

void
fpe_handler(int sig) {
  if (sig != SIGFPE) {
    std::cerr << "fpe_handler called on signal different from SIGFPE"
	      << std::endl;
    exit(1);
  }
  std::cerr << "SIGFPE caught"
            << std::endl;
#if defined(PWL_HAVE_FENV_H)
  std::cerr << "Inquire with fetestexcept(): ";
#ifdef FE_INEXACT
  if (fetestexcept(FE_INEXACT))
    std::cerr << "FE_INEXACT ";
#endif
#ifdef FE_DIVBYZERO
  if (fetestexcept(FE_DIVBYZERO))
    std::cerr << "FE_DIVBYZERO ";
#endif
#ifdef FE_UNDERFLOW
  if (fetestexcept(FE_UNDERFLOW))
    std::cerr << "FE_UNDERFLOW ";
#endif
#ifdef FE_OVERFLOW
  if (fetestexcept(FE_OVERFLOW))
    std::cerr << "FE_OVERFLOW ";
#endif
#if FE_INVALID
  if (fetestexcept(FE_INVALID))
    std::cerr << "FE_INVALID ";
#endif
  std::cerr << std::endl;
#endif // defined(PWL_HAVE_FENV_H)
  exit(1);
}

#endif // !defined(PWL_HAVE_SIGINFO_T) || !defined(SA_SIGINFO)

#endif // PWL_HAVE_DECL_SIGACTION

} // namespace

namespace Parma_Watchdog_Library {

namespace Test {

void
set_handlers() {
#if PWL_HAVE_DECL_SIGACTION
  struct sigaction action;
  sigemptyset(&action.sa_mask);
#if defined(PWL_HAVE_SIGINFO_T) && defined(SA_SIGINFO)
  action.sa_sigaction = fpe_sigaction;
  action.sa_flags = SA_SIGINFO;
#else // !defined(PWL_HAVE_SIGINFO_T) || !defined(SA_SIGINFO)
  action.sa_handler = fpe_handler;
  action.sa_flags = 0;
#endif // !defined(PWL_HAVE_SIGINFO_T) || !defined(SA_SIGINFO)
  if (sigaction(SIGFPE, &action, NULL) != 0) {
    std::cerr << "sigaction() failed"
	      << std::endl;
    abort();
  }
#endif // PWL_HAVE_DECL_SIGACTION

  std::set_unexpected(unexpected_exception_handler);
  std::set_terminate(uncaught_exception_handler);
}

} // namespace Test

} // namespace Parma_Watchdog_Library