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| author | Joe Simmons-Talbott <josimmon@redhat.com> | 2023-04-04 09:57:45 -0400 |
|---|---|---|
| committer | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2023-05-16 14:38:07 -0400 |
| commit | 0d21b3783f49ae94207a1bb9acd5dc8b071f0b13 (patch) | |
| tree | aee76e59952c6bd247aa869acce4cbd85951534f /stdlib | |
| parent | 114f1b7881e63e2b4e5d0e9a9e4fb142b9cd886c (diff) | |
| download | glibc-0d21b3783f49ae94207a1bb9acd5dc8b071f0b13.tar.gz glibc-0d21b3783f49ae94207a1bb9acd5dc8b071f0b13.tar.xz glibc-0d21b3783f49ae94207a1bb9acd5dc8b071f0b13.zip | |
stdlib: Add testcases for abs(). (BZ #30263)
Test minimum and maximum int values, zero, and part of the range of int values. Use '-fno-builtin' to ensure we are testing the implementation. Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
Diffstat (limited to 'stdlib')
| -rw-r--r-- | stdlib/Makefile | 3 | ||||
| -rw-r--r-- | stdlib/tst-abs.c | 45 |
2 files changed, 48 insertions, 0 deletions
diff --git a/stdlib/Makefile b/stdlib/Makefile index 59ffed79b9..2a50822774 100644 --- a/stdlib/Makefile +++ b/stdlib/Makefile @@ -184,6 +184,7 @@ tests := \ testmb2 \ testrand \ testsort \ + tst-abs \ tst-arc4random-fork \ tst-arc4random-stats \ tst-arc4random-thread \ @@ -287,6 +288,8 @@ LDLIBS-test-dlclose-exit-race = $(shared-thread-library) LDFLAGS-test-dlclose-exit-race = $(LDFLAGS-rdynamic) LDLIBS-test-dlclose-exit-race-helper.so = $(libsupport) $(shared-thread-library) +CFLAGS-tst-abs.c += -fno-builtin + ifeq ($(have-cxx-thread_local),yes) CFLAGS-tst-quick_exit.o = -std=c++11 LDLIBS-tst-quick_exit = -lstdc++ diff --git a/stdlib/tst-abs.c b/stdlib/tst-abs.c new file mode 100644 index 0000000000..2b96aedc3e --- /dev/null +++ b/stdlib/tst-abs.c @@ -0,0 +1,45 @@ +/* Basic tests for abs. + 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) +{ + int i; + + TEST_COMPARE(abs(INT_MAX), INT_MAX); + TEST_COMPARE(abs(INT_MIN + 1), INT_MAX); + TEST_COMPARE(abs(-1), 1); + TEST_COMPARE(abs(0), 0); + TEST_COMPARE(abs(1), 1); + + for (i = INT_MIN + 1; i < 0; i += LARGE_PRIME) + TEST_COMPARE(abs(i), -i); + + for (i = 0; i < INT_MAX - LARGE_PRIME; i += LARGE_PRIME) + TEST_COMPARE(abs(i), i); + + return EXIT_SUCCESS; +} + +#include <support/test-driver.c> |