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
|
/* Test femode_t functions.
Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <fenv.h>
#include <stdio.h>
#include <math-tests.h>
static int
test_mmee (int mode1, int mode2, int exc1, int exc2)
{
int result = 0;
printf ("testing %x %x %x %x\n", (unsigned int) mode1, (unsigned int) mode2,
(unsigned int) exc1, (unsigned int) exc2);
feclearexcept (FE_ALL_EXCEPT);
int ret = fesetround (mode1);
if (ret != 0)
{
if (ROUNDING_TESTS (float, mode1))
{
puts ("first fesetround failed unexpectedly");
result = 1;
}
else
puts ("first fesetround failed, cannot test");
return result;
}
ret = fesetexcept (exc1);
if (ret != 0)
{
if (EXCEPTION_TESTS (float) || exc1 == 0)
{
puts ("first fesetexcept failed unexpectedly");
result = 1;
}
else
puts ("first fesetexcept failed, cannot test");
return result;
}
femode_t saved;
ret = fegetmode (&saved);
if (ret != 0)
{
puts ("fegetmode failed");
result = 1;
return result;
}
feclearexcept (FE_ALL_EXCEPT);
ret = fesetround (mode2);
if (ret != 0)
{
if (ROUNDING_TESTS (float, mode2))
{
puts ("second fesetround failed unexpectedly");
result = 1;
}
else
puts ("second fesetround failed, cannot test");
return result;
}
ret = fesetexcept (exc2);
if (ret != 0)
{
if (EXCEPTION_TESTS (float) || exc2 == 0)
{
puts ("second fesetexcept failed unexpectedly");
result = 1;
}
else
puts ("second fesetexcept failed, cannot test");
return result;
}
ret = fesetmode (&saved);
if (ret != 0)
{
puts ("fesetmode failed");
result = 1;
return result;
}
/* Verify that the rounding mode was restored but the exception
flags remain unchanged. */
ret = fegetround ();
if (ret != mode1)
{
printf ("restored rounding mode %x not %x\n", (unsigned int) ret,
(unsigned int) mode1);
result = 1;
}
ret = fetestexcept (FE_ALL_EXCEPT);
if (ret != exc2)
{
printf ("exceptions %x not %x\n", (unsigned int) ret,
(unsigned int) exc2);
result = 1;
}
/* Likewise, with default modes. */
ret = fesetmode (FE_DFL_MODE);
if (ret != 0)
{
puts ("fesetmode (FE_DFL_MODE) failed");
result = 1;
return result;
}
ret = fegetround ();
if (ret != FE_TONEAREST)
{
printf ("FE_DFL_MODE rounding mode %x not %x\n", (unsigned int) ret,
(unsigned int) FE_TONEAREST);
result = 1;
}
ret = fetestexcept (FE_ALL_EXCEPT);
if (ret != exc2)
{
printf ("FE_DFL_MODE exceptions %x not %x\n", (unsigned int) ret,
(unsigned int) exc2);
result = 1;
}
return result;
}
static int
test_mme (int mode1, int mode2, int exc1)
{
int result = 0;
result |= test_mmee (mode1, mode2, exc1, 0);
result |= test_mmee (mode1, mode2, exc1, FE_ALL_EXCEPT);
#ifdef FE_DIVBYZERO
result |= test_mmee (mode1, mode2, exc1, FE_DIVBYZERO);
#endif
#ifdef FE_INEXACT
result |= test_mmee (mode1, mode2, exc1, FE_INEXACT);
#endif
#ifdef FE_INVALID
result |= test_mmee (mode1, mode2, exc1, FE_INVALID);
#endif
#ifdef FE_OVERFLOW
result |= test_mmee (mode1, mode2, exc1, FE_OVERFLOW);
#endif
#ifdef FE_UNDERFLOW
result |= test_mmee (mode1, mode2, exc1, FE_UNDERFLOW);
#endif
return result;
}
static int
test_mm (int mode1, int mode2)
{
int result = 0;
result |= test_mme (mode1, mode2, 0);
result |= test_mme (mode1, mode2, FE_ALL_EXCEPT);
#ifdef FE_DIVBYZERO
result |= test_mme (mode1, mode2, FE_DIVBYZERO);
#endif
#ifdef FE_INEXACT
result |= test_mme (mode1, mode2, FE_INEXACT);
#endif
#ifdef FE_INVALID
result |= test_mme (mode1, mode2, FE_INVALID);
#endif
#ifdef FE_OVERFLOW
result |= test_mme (mode1, mode2, FE_OVERFLOW);
#endif
#ifdef FE_UNDERFLOW
result |= test_mme (mode1, mode2, FE_UNDERFLOW);
#endif
return result;
}
static int
test_m (int mode1)
{
int result = 0;
#ifdef FE_DOWNWARD
result |= test_mm (mode1, FE_DOWNWARD);
#endif
#ifdef FE_TONEAREST
result |= test_mm (mode1, FE_TONEAREST);
#endif
#ifdef FE_TOWARDZERO
result |= test_mm (mode1, FE_TOWARDZERO);
#endif
#ifdef FE_UPWARD
result |= test_mm (mode1, FE_UPWARD);
#endif
return result;
}
static int
do_test (void)
{
int result = 0;
#ifdef FE_DOWNWARD
result |= test_m (FE_DOWNWARD);
#endif
#ifdef FE_TONEAREST
result |= test_m (FE_TONEAREST);
#endif
#ifdef FE_TOWARDZERO
result |= test_m (FE_TOWARDZERO);
#endif
#ifdef FE_UPWARD
result |= test_m (FE_UPWARD);
#endif
return result;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
|
