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| author | Lenard Mollenkopf <glibc@lenardmollenkopf.de> | 2025-04-08 14:16:54 +0200 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2025-04-08 12:51:51 +0000 |
| commit | 5b132ec2b7712dbc055838b3b538b83ad1196414 (patch) | |
| tree | 28355a9f14cbf15da68217aba5e3be48169092a2 /stdlib/tst-ullabs.c | |
| parent | 4fa959d13d21b8f56a43aa0a416100303736c55c (diff) | |
| download | glibc-5b132ec2b7712dbc055838b3b538b83ad1196414.tar.xz glibc-5b132ec2b7712dbc055838b3b538b83ad1196414.zip | |
stdlib: Implement C2Y uabs, ulabs, ullabs and uimaxabs
C2Y adds unsigned versions of the abs functions (see C2Y draft N3467 and
proposal N3349).
Tested for x86_64.
Signed-off-by: Lenard Mollenkopf <glibc@lenardmollenkopf.de>
Diffstat (limited to 'stdlib/tst-ullabs.c')
| -rw-r--r-- | stdlib/tst-ullabs.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/stdlib/tst-ullabs.c b/stdlib/tst-ullabs.c new file mode 100644 index 0000000000..ac34ec776e --- /dev/null +++ b/stdlib/tst-ullabs.c @@ -0,0 +1,55 @@ +/* Basic tests for ullabs. + Copyright (C) 2025 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 long int i; + + TEST_COMPARE (ullabs (LLONG_MAX), LLONG_MAX); + TEST_COMPARE (ullabs (LLONG_MIN), (unsigned long long int)LLONG_MAX + 1); + TEST_COMPARE (ullabs (0x00000000ffffffffL), 0x00000000ffffffffL); + TEST_COMPARE (ullabs (0x0000000100000000L), 0x0000000100000000L); + TEST_COMPARE (ullabs (0x80000000ffffffffL), 0x7fffffff00000001L); + TEST_COMPARE (ullabs (0x8000000100000000L), 0x7fffffff00000000L); + TEST_COMPARE (ullabs (-1), 1); + TEST_COMPARE (ullabs (0), 0); + TEST_COMPARE (ullabs (1), 1); + + for (i = LLONG_MIN + 1; i < LLONG_MIN + INT_MAX; i += LARGE_PRIME) + TEST_COMPARE (ullabs (i), -i); + + for (i = LLONG_MAX - INT_MAX; i < LLONG_MAX - LARGE_PRIME; i += LARGE_PRIME) + TEST_COMPARE (ullabs (i), i); + + for (i = INT_MIN + 1; i < 0; i += LARGE_PRIME) + TEST_COMPARE (ullabs (i), -i); + + for (i = 0; i < INT_MAX; i += LARGE_PRIME) + TEST_COMPARE (ullabs (i), i); + + return EXIT_SUCCESS; +} + +#include <support/test-driver.c> |