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d877b52d58
Test minimum and maximum long long values, zero, 32bit crossover points, and part of the range of long long values. Use '-fno-builtin' to ensure we are testing the implementation. Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
/* Basic tests for llabs.
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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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long i;
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TEST_COMPARE(llabs(LLONG_MAX), LLONG_MAX);
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TEST_COMPARE(llabs(LLONG_MIN + 1), LLONG_MAX);
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TEST_COMPARE(llabs(0x00000000ffffffffL), 0x00000000ffffffffL);
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TEST_COMPARE(llabs(0x0000000100000000L), 0x0000000100000000L);
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TEST_COMPARE(llabs(0x80000000ffffffffL), 0x7fffffff00000001L);
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TEST_COMPARE(llabs(0x8000000100000000L), 0x7fffffff00000000L);
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TEST_COMPARE(llabs(-1), 1);
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TEST_COMPARE(llabs(0), 0);
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TEST_COMPARE(llabs(1), 1);
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for (i = LLONG_MIN + 1; i < LLONG_MIN + INT_MAX; i += LARGE_PRIME)
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TEST_COMPARE(llabs(i), -i);
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for (i = LLONG_MAX - INT_MAX; i < LLONG_MAX - LARGE_PRIME; i += LARGE_PRIME)
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TEST_COMPARE(llabs(i), i);
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for (i = INT_MIN + 1; i < 0; i += LARGE_PRIME)
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TEST_COMPARE(llabs(i), -i);
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for (i = 0; i < INT_MAX; i += LARGE_PRIME)
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TEST_COMPARE(llabs(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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