| 1 | /* Test nearbyint functions do not clear exceptions (bug 15491). |
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| 2 | Copyright (C) 2015-2022 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <fenv.h> |
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| 20 | #include <math.h> |
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| 21 | #include <stdbool.h> |
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| 22 | #include <stdio.h> |
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| 23 | |
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| 24 | #include <math-tests.h> |
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| 25 | |
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| 26 | #ifndef FE_INVALID |
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| 27 | # define FE_INVALID 0 |
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| 28 | #endif |
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| 29 | |
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| 30 | static bool any_supported = false; |
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| 31 | |
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| 32 | #define TEST_FUNC(NAME, FLOAT, SUFFIX) \ |
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| 33 | static int \ |
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| 34 | NAME (void) \ |
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| 35 | { \ |
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| 36 | int result = 0; \ |
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| 37 | if (!EXCEPTION_TESTS (FLOAT)) \ |
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| 38 | return 0; \ |
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| 39 | any_supported = true; \ |
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| 40 | volatile FLOAT a, b __attribute__ ((unused)); \ |
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| 41 | a = 1.0; \ |
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| 42 | /* nearbyint must not clear already-raised exceptions. */ \ |
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| 43 | feraiseexcept (FE_ALL_EXCEPT); \ |
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| 44 | b = nearbyint ## SUFFIX (a); \ |
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| 45 | if (fetestexcept (FE_ALL_EXCEPT) == FE_ALL_EXCEPT) \ |
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| 46 | puts ("PASS: " #FLOAT); \ |
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| 47 | else \ |
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| 48 | { \ |
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| 49 | puts ("FAIL: " #FLOAT); \ |
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| 50 | result = 1; \ |
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| 51 | } \ |
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| 52 | /* But it mustn't lose exceptions from sNaN arguments. */ \ |
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| 53 | if (SNAN_TESTS (FLOAT)) \ |
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| 54 | { \ |
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| 55 | static volatile FLOAT snan = __builtin_nans ## SUFFIX (""); \ |
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| 56 | volatile FLOAT c __attribute__ ((unused)); \ |
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| 57 | feclearexcept (FE_ALL_EXCEPT); \ |
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| 58 | c = nearbyint ## SUFFIX (snan); \ |
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| 59 | if (fetestexcept (FE_INVALID) == FE_INVALID) \ |
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| 60 | puts ("PASS: " #FLOAT " sNaN"); \ |
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| 61 | else \ |
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| 62 | { \ |
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| 63 | puts ("FAIL: " #FLOAT " sNaN"); \ |
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| 64 | result = 1; \ |
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| 65 | } \ |
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| 66 | } \ |
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| 67 | return result; \ |
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| 68 | } |
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| 69 | |
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| 70 | TEST_FUNC (float_test, float, f) |
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| 71 | TEST_FUNC (double_test, double, ) |
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| 72 | TEST_FUNC (ldouble_test, long double, l) |
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| 73 | |
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| 74 | static int |
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| 75 | do_test (void) |
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| 76 | { |
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| 77 | int result = float_test (); |
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| 78 | result |= double_test (); |
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| 79 | result |= ldouble_test (); |
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| 80 | if (!any_supported) |
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| 81 | return 77; |
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| 82 | return result; |
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| 83 | } |
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| 84 | |
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| 85 | #define TEST_FUNCTION do_test () |
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| 86 | #include "../test-skeleton.c" |
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| 87 | |
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