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46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
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/* Basic tests for abs.
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Copyright (C) 2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <limits.h>
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#include <stdlib.h>
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#include <support/check.h>
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#define LARGE_PRIME 49999
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static int do_test (void)
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{
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int i;
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TEST_COMPARE(abs(INT_MAX), INT_MAX);
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TEST_COMPARE(abs(INT_MIN + 1), INT_MAX);
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TEST_COMPARE(abs(-1), 1);
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TEST_COMPARE(abs(0), 0);
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TEST_COMPARE(abs(1), 1);
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for (i = INT_MIN + 1; i < 0; i += LARGE_PRIME)
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TEST_COMPARE(abs(i), -i);
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for (i = 0; i < INT_MAX - LARGE_PRIME; i += LARGE_PRIME)
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TEST_COMPARE(abs(i), i);
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return EXIT_SUCCESS;
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}
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#include <support/test-driver.c>
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