File: Init.cc

package info (click to toggle)
ppl 1%3A1.2-1
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 43,952 kB
  • ctags: 19,973
  • sloc: cpp: 212,085; sh: 12,176; makefile: 7,289; perl: 6,333; java: 2,220; ansic: 1,842; ml: 1,132; sed: 80
file content (244 lines) | stat: -rw-r--r-- 7,237 bytes parent folder | download | duplicates (3)
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
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
/* Init class implementation (non-inline functions and static variables).
   Copyright (C) 2001-2010 Roberto Bagnara <bagnara@cs.unipr.it>
   Copyright (C) 2010-2016 BUGSENG srl (http://bugseng.com)

This file is part of the Parma Polyhedra Library (PPL).

The PPL 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 PPL 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://bugseng.com/products/ppl/ . */

#include "ppl-config.h"
#include "Init_defs.hh"
#include "Variable_defs.hh"
#include "fpu_defs.hh"
#include "Rounding_Dir_defs.hh"
#include "checked_defs.hh"
#include "Coefficient_defs.hh"
#include "Linear_Expression_defs.hh"
#include "Constraint_defs.hh"
#include "Generator_defs.hh"
#include "Congruence_defs.hh"
#include "Grid_Generator_defs.hh"
#include "Constraint_System_defs.hh"
#include "Generator_System_defs.hh"
#include "Congruence_System_defs.hh"
#include "Grid_Generator_System_defs.hh"
#include "Polyhedron_defs.hh"
#include "Watchdog_defs.hh"
#include <stdexcept>

namespace PPL = Parma_Polyhedra_Library;

unsigned int PPL::Init::count = 0;

PPL::fpu_rounding_direction_type PPL::Init::old_rounding_direction;

extern "C" void
ppl_set_GMP_memory_allocation_functions(void);

#if PPL_CAN_CONTROL_FPU \
  && defined(PPL_ARM_CAN_CONTROL_FPU) && PPL_ARM_CAN_CONTROL_FPU

namespace {

     float  nf1 =  -3, pf1 = 3,  f2 =  5;
     double nd1 =  -7, pd1 = 7,  d2 = 11;
long double nl1 = -13, pl1 = 13, l2 = 17;

      float nf[2], pf[2];
     double nd[2], pd[2];
long double nl[2], pl[2];

int
ppl_check_function() {
  int r = 0;
  if (nf[0] == nf[1] || pf[0] == pf[1] || -nf[0] != pf[1] || -nf[1] != pf[0]) {
    r |= 1;
  }
  if (nd[0] == nd[1] || pd[0] == pd[1] || -nd[0] != pd[1] || -nd[1] != pd[0]) {
    r |= 2;
  }
  if (nl[0] == nl[1] || pl[0] == pl[1] || -nl[0] != pl[1] || -nl[1] != pl[0]) {
    r |= 4;
  }
  return r;
}

int
ppl_setround_function(int rounding_mode) {
  return fesetround(rounding_mode);
}

} // namespace

namespace Parma_Polyhedra_Library {

namespace Implementation {

int (* volatile ppl_check_function_p)() = ppl_check_function;
int (* volatile ppl_setround_function_p)(int) = ppl_setround_function;

} // namespace Implementation

} // namespace Parma_Polyhedra_Library

namespace {

int
ppl_test_rounding() {
  if ((*ppl_setround_function_p)(FE_DOWNWARD) != 0) {
    return 255;
  }

  nf[0] = nf1 / f2;
  nd[0] = nd1 / d2;
  nl[0] = nl1 / l2;
  pf[0] = pf1 / f2;
  pd[0] = pd1 / d2;
  pl[0] = pl1 / l2;

  if ((*ppl_setround_function_p)(FE_UPWARD) != 0) {
    return 255;
  }

  nf[1] = nf1 / f2;
  nd[1] = nd1 / d2;
  nl[1] = nl1 / l2;
  pf[1] = pf1 / f2;
  pd[1] = pd1 / d2;
  pl[1] = pl1 / l2;

  return (*ppl_check_function_p)();
}

} // namespace

#endif // PPL_CAN_CONTROL_FPU
       // && defined(PPL_ARM_CAN_CONTROL_FPU) && PPL_ARM_CAN_CONTROL_FPU

PPL::Init::Init() {
  // Only when the first Init object is constructed...
  if (count++ == 0) {
    // ... the GMP memory allocation functions are set, ...
    ppl_set_GMP_memory_allocation_functions();
    // ... the default output function for Variable objects is set, ...
    Variable::set_output_function(&Variable::default_output_function);
    // ... the Coefficient constants are initialized, ...
    Coefficient_constants_initialize();
    // ... the Linear_Expression class is initialized, ...
    Linear_Expression::initialize();
    // ... the Constraint, Generator, Congruence, Grid_Generator,
    // Constraint_System, Generator_System, Congruence_System,
    // Grid_Generator_System and Polyhedron classes are initialized, ...
    Constraint::initialize();
    Generator::initialize();
    Congruence::initialize();
    Grid_Generator::initialize();
    Constraint_System::initialize();
    Generator_System::initialize();
    Congruence_System::initialize();
    Grid_Generator_System::initialize();
    Polyhedron::initialize();

#if PPL_HAVE_DECL_SETITIMER && PPL_HAVE_DECL_SIGACTION
    // ... the Watchdog subsystem is initialized, ...
    Watchdog::Watchdog::initialize();
#endif // PPL_HAVE_DECL_SETITIMER && PPL_HAVE_DECL_SIGACTION

#if PPL_CAN_CONTROL_FPU

    // ... and the FPU rounding direction is set.
    fpu_initialize_control_functions();
    old_rounding_direction = fpu_get_rounding_direction();
    fpu_set_rounding_direction(round_fpu_dir(ROUND_DIRECT));

#if defined(PPL_ARM_CAN_CONTROL_FPU) && PPL_ARM_CAN_CONTROL_FPU
    if (ppl_test_rounding() != 0) {
      throw std::logic_error("PPL configuration error:"
                             " PPL_ARM_CAN_CONTROL_FPU evaluates to true,"
                             " but rounding does not work.");
    }
#endif // defined(PPL_ARM_CAN_CONTROL_FPU) && PPL_ARM_CAN_CONTROL_FPU

#endif // PPL_CAN_CONTROL_FPU

    // The default is chosen to have a precision greater than most
    // precise IEC 559 floating point (112 bits of mantissa).
    set_irrational_precision(DEFAULT_IRRATIONAL_PRECISION);
  }
}

PPL::Init::~Init() {
  // Only when the last Init object is destroyed...
  if (--count == 0) {
#if PPL_CAN_CONTROL_FPU
    // ... the FPU rounding direction is restored, ...
    fpu_set_rounding_direction(old_rounding_direction);
#endif

#if PPL_HAVE_DECL_SETITIMER && PPL_HAVE_DECL_SIGACTION
    // ... the Watchdog subsystem is finalized, ...
    Watchdog::Watchdog::finalize();
#endif // PPL_HAVE_DECL_SETITIMER && PPL_HAVE_DECL_SIGACTION

    // ... the Polyhedron, Grid_Generator_System, Congruence_System,
    // Generator_System, Constraint_System, Grid_Generator,
    // Congruence, Generator and Constraint classes are finalized
    // IN THAT ORDER, ...
    Polyhedron::finalize();
    Grid_Generator_System::finalize();
    Congruence_System::finalize();
    Generator_System::finalize();
    Constraint_System::finalize();
    Grid_Generator::finalize();
    Congruence::finalize();
    Generator::finalize();
    Constraint::finalize();
    // ... the Linear_Expression class is finalized, ...
    Linear_Expression::finalize();
    // ... and the Coefficient constants are finalized.
    Coefficient_constants_finalize();
  }
}

namespace Parma_Polyhedra_Library {

namespace Implementation {

namespace {

static Parma_Polyhedra_Library::Init* Parma_Polyhedra_Library_initializer_p;

} // namespace

void
initialize_aux() {
  if (Parma_Polyhedra_Library_initializer_p == 0) {
    Parma_Polyhedra_Library_initializer_p = new Init();
  }
}

void
finalize_aux() {
  PPL_ASSERT(Parma_Polyhedra_Library_initializer_p != 0);
  delete Parma_Polyhedra_Library_initializer_p;
  Parma_Polyhedra_Library_initializer_p = 0;
}

} // namespace Implementation

} // namespace Parma_Polyhedra_Library