xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame^] | 1 | /* Test signaling NaNs in issignaling, isnan, isinf, and similar functions. |
| 2 | Copyright (C) 2008-2016 Free Software Foundation, Inc. |
| 3 | This file is part of the GNU C Library. |
| 4 | Contributed by Andreas Jaeger <aj@suse.de>, 2005. |
| 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 | <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #define _GNU_SOURCE 1 |
| 21 | #include <stdio.h> |
| 22 | #include <math.h> |
| 23 | #include <float.h> |
| 24 | #include <fenv.h> |
| 25 | #include <signal.h> |
| 26 | #include <setjmp.h> |
| 27 | |
| 28 | #include <math-tests.h> |
| 29 | |
| 30 | |
| 31 | static sigjmp_buf sigfpe_buf; |
| 32 | |
| 33 | static void |
| 34 | myFPsighandler (int signal) |
| 35 | { |
| 36 | siglongjmp (sigfpe_buf, 1); |
| 37 | } |
| 38 | |
| 39 | static int errors = 0; |
| 40 | |
| 41 | #define CHECK(testname, expr) \ |
| 42 | do { \ |
| 43 | feclearexcept (FE_ALL_EXCEPT); \ |
| 44 | feenableexcept (FE_ALL_EXCEPT); \ |
| 45 | if (sigsetjmp (sigfpe_buf, 0)) \ |
| 46 | { \ |
| 47 | printf ("%s raised SIGFPE\n", testname); \ |
| 48 | ++errors; \ |
| 49 | } \ |
| 50 | else if (!(expr)) \ |
| 51 | { \ |
| 52 | printf ("Failure: %s\n", testname); \ |
| 53 | ++errors; \ |
| 54 | } \ |
| 55 | } while (0) |
| 56 | |
| 57 | #define TEST_FUNC(NAME, FLOAT, SUFFIX) \ |
| 58 | static void \ |
| 59 | NAME (void) \ |
| 60 | { \ |
| 61 | /* Variables are declared volatile to forbid some compiler \ |
| 62 | optimizations. */ \ |
| 63 | volatile FLOAT Inf_var, qNaN_var, zero_var, one_var; \ |
| 64 | /* A sNaN is only guaranteed to be representable in variables with */ \ |
| 65 | /* static (or thread-local) storage duration. */ \ |
| 66 | static volatile FLOAT sNaN_var = __builtin_nans ## SUFFIX (""); \ |
| 67 | static volatile FLOAT minus_sNaN_var = -__builtin_nans ## SUFFIX (""); \ |
| 68 | fenv_t saved_fenv; \ |
| 69 | \ |
| 70 | zero_var = 0.0; \ |
| 71 | one_var = 1.0; \ |
| 72 | qNaN_var = __builtin_nan ## SUFFIX (""); \ |
| 73 | Inf_var = one_var / zero_var; \ |
| 74 | \ |
| 75 | (void) &zero_var; \ |
| 76 | (void) &one_var; \ |
| 77 | (void) &qNaN_var; \ |
| 78 | (void) &sNaN_var; \ |
| 79 | (void) &minus_sNaN_var; \ |
| 80 | (void) &Inf_var; \ |
| 81 | \ |
| 82 | fegetenv (&saved_fenv); \ |
| 83 | \ |
| 84 | CHECK (#FLOAT " issignaling (qNaN)", !issignaling (qNaN_var)); \ |
| 85 | CHECK (#FLOAT " issignaling (-qNaN)", !issignaling (-qNaN_var)); \ |
| 86 | CHECK (#FLOAT " issignaling (sNaN)", \ |
| 87 | SNAN_TESTS (FLOAT) ? issignaling (sNaN_var) : 1); \ |
| 88 | CHECK (#FLOAT " issignaling (-sNaN)", \ |
| 89 | SNAN_TESTS (FLOAT) ? issignaling (minus_sNaN_var) : 1); \ |
| 90 | CHECK (#FLOAT " isnan (qNaN)", isnan (qNaN_var)); \ |
| 91 | CHECK (#FLOAT " isnan (-qNaN)", isnan (-qNaN_var)); \ |
| 92 | CHECK (#FLOAT " isnan (sNaN)", \ |
| 93 | SNAN_TESTS (FLOAT) ? isnan (sNaN_var) : 1); \ |
| 94 | CHECK (#FLOAT " isnan (-sNaN)", \ |
| 95 | SNAN_TESTS (FLOAT) ? isnan (minus_sNaN_var) : 1); \ |
| 96 | CHECK (#FLOAT " isinf (qNaN)", !isinf (qNaN_var)); \ |
| 97 | CHECK (#FLOAT " isinf (-qNaN)", !isinf (-qNaN_var)); \ |
| 98 | CHECK (#FLOAT " isinf (sNaN)", \ |
| 99 | SNAN_TESTS (FLOAT) ? !isinf (sNaN_var) : 1); \ |
| 100 | CHECK (#FLOAT " isinf (-sNaN)", \ |
| 101 | SNAN_TESTS (FLOAT) ? !isinf (minus_sNaN_var) : 1); \ |
| 102 | CHECK (#FLOAT " isfinite (qNaN)", !isfinite (qNaN_var)); \ |
| 103 | CHECK (#FLOAT " isfinite (-qNaN)", !isfinite (-qNaN_var)); \ |
| 104 | CHECK (#FLOAT " isfinite (sNaN)", \ |
| 105 | SNAN_TESTS (FLOAT) ? !isfinite (sNaN_var) : 1); \ |
| 106 | CHECK (#FLOAT " isfinite (-sNaN)", \ |
| 107 | SNAN_TESTS (FLOAT) ? !isfinite (minus_sNaN_var) : 1); \ |
| 108 | CHECK (#FLOAT " isnormal (qNaN)", !isnormal (qNaN_var)); \ |
| 109 | CHECK (#FLOAT " isnormal (-qNaN)", !isnormal (-qNaN_var)); \ |
| 110 | CHECK (#FLOAT " isnormal (sNaN)", \ |
| 111 | SNAN_TESTS (FLOAT) ? !isnormal (sNaN_var) : 1); \ |
| 112 | CHECK (#FLOAT " isnormal (-sNaN)", \ |
| 113 | SNAN_TESTS (FLOAT) ? !isnormal (minus_sNaN_var) : 1); \ |
| 114 | CHECK (#FLOAT " fpclassify (qNaN)", (fpclassify (qNaN_var)==FP_NAN)); \ |
| 115 | CHECK (#FLOAT " fpclassify (-qNaN)", (fpclassify (-qNaN_var)==FP_NAN)); \ |
| 116 | CHECK (#FLOAT " fpclassify (sNaN)", \ |
| 117 | SNAN_TESTS (FLOAT) ? fpclassify (sNaN_var) == FP_NAN : 1); \ |
| 118 | CHECK (#FLOAT " fpclassify (-sNaN)", \ |
| 119 | SNAN_TESTS (FLOAT) ? fpclassify (minus_sNaN_var) == FP_NAN : 1); \ |
| 120 | \ |
| 121 | fesetenv (&saved_fenv); /* restore saved fenv */ \ |
| 122 | } \ |
| 123 | |
| 124 | TEST_FUNC (float_test, float, f) |
| 125 | TEST_FUNC (double_test, double, ) |
| 126 | #ifndef NO_LONG_DOUBLE |
| 127 | TEST_FUNC (ldouble_test, long double, l) |
| 128 | #endif |
| 129 | |
| 130 | static int |
| 131 | do_test (void) |
| 132 | { |
| 133 | signal (SIGFPE, &myFPsighandler); |
| 134 | |
| 135 | float_test (); |
| 136 | double_test (); |
| 137 | #ifndef NO_LONG_DOUBLE |
| 138 | ldouble_test (); |
| 139 | #endif |
| 140 | |
| 141 | return errors != 0; |
| 142 | } |
| 143 | |
| 144 | #define TEST_FUNCTION do_test () |
| 145 | #include "../test-skeleton.c" |