1 | /* Test fesetenv (FE_DFL_ENV) and fesetenv (FE_NOMASK_ENV) clear |
2 | exceptions (bug 19181). |
3 | Copyright (C) 2015-2022 Free Software Foundation, Inc. |
4 | This file is part of the GNU C Library. |
5 | |
6 | The GNU C Library is free software; you can redistribute it and/or |
7 | modify it under the terms of the GNU Lesser General Public |
8 | License as published by the Free Software Foundation; either |
9 | version 2.1 of the License, or (at your option) any later version. |
10 | |
11 | The GNU C Library is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | Lesser General Public License for more details. |
15 | |
16 | You should have received a copy of the GNU Lesser General Public |
17 | License along with the GNU C Library; if not, see |
18 | <https://www.gnu.org/licenses/>. */ |
19 | |
20 | #include <fenv.h> |
21 | #include <float.h> |
22 | #include <stdio.h> |
23 | |
24 | volatile float fa = 1.0f, fb = 0.0f, fc = FLT_MAX, fr; |
25 | volatile long double lda = 1.0L, ldb = 0.0L, ldc = LDBL_MAX, ldr; |
26 | |
27 | static void |
28 | raise_exceptions (void) |
29 | { |
30 | /* Raise exceptions both with feraiseexcept and arithmetic to allow |
31 | for case of multiple floating-point units with separate |
32 | exceptions state. */ |
33 | feraiseexcept (FE_ALL_EXCEPT); |
34 | fr = fb / fb; |
35 | fr = fa / fb; |
36 | fr = fc * fc; |
37 | fr = fa / fc / fc; |
38 | ldr = ldb / ldb; |
39 | ldr = lda / ldb; |
40 | ldr = ldc * ldc; |
41 | ldr = lda / ldc / ldc; |
42 | } |
43 | |
44 | static __attribute__ ((noinline)) int |
45 | run_tests (void) |
46 | { |
47 | int result = 0; |
48 | raise_exceptions (); |
49 | if (fesetenv (FE_DFL_ENV) == 0) |
50 | { |
51 | puts (s: "PASS: fesetenv (FE_DFL_ENV)" ); |
52 | if (fetestexcept (FE_ALL_EXCEPT) == 0) |
53 | puts (s: "PASS: fesetenv (FE_DFL_ENV) clearing exceptions" ); |
54 | else |
55 | { |
56 | puts (s: "FAIL: fesetenv (FE_DFL_ENV) clearing exceptions" ); |
57 | result = 1; |
58 | } |
59 | } |
60 | else |
61 | { |
62 | puts (s: "FAIL: fesetenv (FE_DFL_ENV)" ); |
63 | result = 1; |
64 | } |
65 | #ifdef FE_NOMASK_ENV |
66 | raise_exceptions (); |
67 | if (fesetenv (FE_NOMASK_ENV) == 0) |
68 | { |
69 | if (fetestexcept (FE_ALL_EXCEPT) == 0) |
70 | puts (s: "PASS: fesetenv (FE_NOMASK_ENV) clearing exceptions" ); |
71 | else |
72 | { |
73 | puts (s: "FAIL: fesetenv (FE_NOMASK_ENV) clearing exceptions" ); |
74 | result = 1; |
75 | } |
76 | } |
77 | else |
78 | puts (s: "fesetenv (FE_NOMASK_ENV) failed, cannot test" ); |
79 | #endif |
80 | return result; |
81 | } |
82 | |
83 | static int |
84 | do_test (void) |
85 | { |
86 | CHECK_CAN_TEST; |
87 | return run_tests (); |
88 | } |
89 | |
90 | #define TEST_FUNCTION do_test () |
91 | #include "../test-skeleton.c" |
92 | |