mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-03 04:01:43 +08:00
b11db301e1
Test minimum and maximum long values, zero, and part of the range of long values. Use '-fno-builtin' to ensure we are testing the implementation. Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/* Basic tests for labs.
|
|
Copyright (C) 2023 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <limits.h>
|
|
#include <stdlib.h>
|
|
|
|
#include <support/check.h>
|
|
|
|
#define LARGE_PRIME 49999
|
|
|
|
static int do_test (void)
|
|
{
|
|
long i;
|
|
|
|
TEST_COMPARE(labs(LONG_MAX), LONG_MAX);
|
|
TEST_COMPARE(labs(LONG_MIN + 1), LONG_MAX);
|
|
TEST_COMPARE(labs(-1), 1);
|
|
TEST_COMPARE(labs(0), 0);
|
|
TEST_COMPARE(labs(1), 1);
|
|
|
|
for (i = LONG_MIN + 1; i < LONG_MIN + INT_MAX; i += LARGE_PRIME)
|
|
TEST_COMPARE(labs(i), -i);
|
|
|
|
for (i = LONG_MAX - INT_MAX; i < LONG_MAX - LARGE_PRIME; i += LARGE_PRIME)
|
|
TEST_COMPARE(labs(i), i);
|
|
|
|
for (i = INT_MIN + 1; i < 0; i += LARGE_PRIME)
|
|
TEST_COMPARE(labs(i), -i);
|
|
|
|
for (i = 0; i < INT_MAX; i += LARGE_PRIME)
|
|
TEST_COMPARE(labs(i), i);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|