1 | /* Test femode_t functions: test handling of exception traps. |
2 | Copyright (C) 2016-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <fenv.h> |
20 | #include <stdio.h> |
21 | #include <math-tests.h> |
22 | |
23 | static int |
24 | test_ee (int exc1, int exc2) |
25 | { |
26 | int result = 0; |
27 | printf (format: "testing %x %x\n" , (unsigned int) exc1, (unsigned int) exc2); |
28 | |
29 | fedisableexcept (FE_ALL_EXCEPT); |
30 | int ret = feenableexcept (excepts: exc1); |
31 | if (ret == -1) |
32 | { |
33 | if (EXCEPTION_ENABLE_SUPPORTED (exc1)) |
34 | { |
35 | puts (s: "first feenableexcept failed unexpectedly" ); |
36 | result = 1; |
37 | } |
38 | else |
39 | puts (s: "first feenableexcept failed, cannot test" ); |
40 | return result; |
41 | } |
42 | femode_t saved; |
43 | ret = fegetmode (modep: &saved); |
44 | if (ret != 0) |
45 | { |
46 | puts (s: "fegetmode failed" ); |
47 | result = 1; |
48 | return result; |
49 | } |
50 | fedisableexcept (FE_ALL_EXCEPT); |
51 | ret = feenableexcept (excepts: exc2); |
52 | if (ret == -1) |
53 | { |
54 | if (EXCEPTION_ENABLE_SUPPORTED (exc2)) |
55 | { |
56 | puts (s: "second feenableexcept failed unexpectedly" ); |
57 | result = 1; |
58 | } |
59 | else |
60 | puts (s: "second feenableexcept failed, cannot test" ); |
61 | return result; |
62 | } |
63 | ret = fesetmode (modep: &saved); |
64 | if (ret != 0) |
65 | { |
66 | puts (s: "fesetmode failed" ); |
67 | result = 1; |
68 | return result; |
69 | } |
70 | /* Verify that the set of enabled traps was restored. */ |
71 | ret = fegetexcept (); |
72 | if (ret != exc1) |
73 | { |
74 | printf (format: "restored enabled traps %x not %x\n" , (unsigned int) ret, |
75 | (unsigned int) exc1); |
76 | result = 1; |
77 | } |
78 | /* Likewise, with default modes. */ |
79 | ret = fesetmode (FE_DFL_MODE); |
80 | if (ret != 0) |
81 | { |
82 | puts (s: "fesetmode (FE_DFL_MODE) failed" ); |
83 | result = 1; |
84 | return result; |
85 | } |
86 | ret = fegetexcept (); |
87 | if (ret != 0) |
88 | { |
89 | printf (format: "FE_DFL_MODE enabled traps %x not 0\n" , (unsigned int) ret); |
90 | result = 1; |
91 | } |
92 | |
93 | return result; |
94 | } |
95 | |
96 | static int |
97 | test_e (int exc1) |
98 | { |
99 | int result = 0; |
100 | |
101 | result |= test_ee (exc1, exc2: 0); |
102 | result |= test_ee (exc1, FE_ALL_EXCEPT); |
103 | #ifdef FE_DIVBYZERO |
104 | result |= test_ee (exc1, FE_DIVBYZERO); |
105 | #endif |
106 | #ifdef FE_INEXACT |
107 | result |= test_ee (exc1, FE_INEXACT); |
108 | #endif |
109 | #ifdef FE_INVALID |
110 | result |= test_ee (exc1, FE_INVALID); |
111 | #endif |
112 | #ifdef FE_OVERFLOW |
113 | result |= test_ee (exc1, FE_OVERFLOW); |
114 | #endif |
115 | #ifdef FE_UNDERFLOW |
116 | result |= test_ee (exc1, FE_UNDERFLOW); |
117 | #endif |
118 | |
119 | return result; |
120 | } |
121 | |
122 | static int |
123 | do_test (void) |
124 | { |
125 | int result = 0; |
126 | |
127 | result |= test_e (exc1: 0); |
128 | result |= test_e (FE_ALL_EXCEPT); |
129 | #ifdef FE_DIVBYZERO |
130 | result |= test_e (FE_DIVBYZERO); |
131 | #endif |
132 | #ifdef FE_INEXACT |
133 | result |= test_e (FE_INEXACT); |
134 | #endif |
135 | #ifdef FE_INVALID |
136 | result |= test_e (FE_INVALID); |
137 | #endif |
138 | #ifdef FE_OVERFLOW |
139 | result |= test_e (FE_OVERFLOW); |
140 | #endif |
141 | #ifdef FE_UNDERFLOW |
142 | result |= test_e (FE_UNDERFLOW); |
143 | #endif |
144 | |
145 | return result; |
146 | } |
147 | |
148 | #define TEST_FUNCTION do_test () |
149 | #include "../test-skeleton.c" |
150 | |