| 1 | /* Test iszero with excess precision. |
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| 2 | Copyright (C) 2016-2022 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 <float.h> |
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| 20 | #include <math.h> |
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| 21 | #include <stdio.h> |
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| 22 | |
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| 23 | #define TEST(TYPE, TRUE_MIN) \ |
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| 24 | do \ |
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| 25 | { \ |
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| 26 | if (iszero (TRUE_MIN / 2)) \ |
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| 27 | puts ("iszero removes excess precision for " #TYPE); \ |
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| 28 | else \ |
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| 29 | { \ |
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| 30 | puts ("iszero fails to remove excess precision for " #TYPE); \ |
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| 31 | result = 1; \ |
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| 32 | } \ |
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| 33 | } \ |
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| 34 | while (0) |
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| 35 | |
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| 36 | static int |
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| 37 | do_test (void) |
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| 38 | { |
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| 39 | int result = 0; |
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| 40 | |
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| 41 | TEST (float, FLT_TRUE_MIN); |
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| 42 | TEST (double, DBL_TRUE_MIN); |
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| 43 | TEST (long double, LDBL_TRUE_MIN); |
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| 44 | |
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| 45 | return result; |
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| 46 | } |
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| 47 | |
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| 48 | #define TEST_FUNCTION do_test () |
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| 49 | #include "../test-skeleton.c" |
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| 50 | |
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