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53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/* Basic tests for labs.
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Copyright (C) 2023-2024 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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long int i;
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TEST_COMPARE (labs (LONG_MAX), LONG_MAX);
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TEST_COMPARE (labs (LONG_MIN + 1), LONG_MAX);
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TEST_COMPARE (labs (-1), 1);
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TEST_COMPARE (labs (0), 0);
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TEST_COMPARE (labs (1), 1);
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for (i = LONG_MIN + 1; i < LONG_MIN + INT_MAX; i += LARGE_PRIME)
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TEST_COMPARE (labs (i), -i);
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for (i = LONG_MAX - INT_MAX; i < LONG_MAX - LARGE_PRIME;
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i += LARGE_PRIME)
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TEST_COMPARE (labs (i), i);
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for (i = INT_MIN + 1; i < 0; i += LARGE_PRIME)
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TEST_COMPARE (labs (i), -i);
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for (i = 0; i <= INT_MAX - LARGE_PRIME; i += LARGE_PRIME)
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TEST_COMPARE (labs (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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