diff options
| author | Alexey Kodanev <alexey.kodanev@oracle.com> | 2021-02-08 17:29:39 +0300 |
|---|---|---|
| committer | Alexey Kodanev <akodanev@gmail.com> | 2021-02-08 17:46:41 +0300 |
| commit | 07a85f164afef59344bf1684a5bc2cdb4699716c (patch) | |
| tree | 333d5c96cb171e6dd45e8bf0154d509263898d8c | |
| parent | 66266a951b3785467a966c01a3f2bd1eed94f05b (diff) | |
| download | ltp-07a85f164afef59344bf1684a5bc2cdb4699716c.tar.gz | |
lib: add tst_get_median helper binary for use in script tests
./tst_get_median 10 11 300 8 9 14
output: 10
Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
Reviewed-by: Petr Vorel <pvorel@suse.cz>
| -rw-r--r-- | testcases/lib/.gitignore | 1 | ||||
| -rw-r--r-- | testcases/lib/Makefile | 3 | ||||
| -rw-r--r-- | testcases/lib/tst_get_median.c | 37 |
3 files changed, 40 insertions, 1 deletions
diff --git a/testcases/lib/.gitignore b/testcases/lib/.gitignore index 52f99dc45..bc299b6ee 100644 --- a/testcases/lib/.gitignore +++ b/testcases/lib/.gitignore @@ -2,6 +2,7 @@ /tst_checkpoint /tst_device /tst_getconf +/tst_get_median /tst_get_unused_port /tst_kvcmp /tst_net_iface_prefix diff --git a/testcases/lib/Makefile b/testcases/lib/Makefile index 4616e24c0..f77da0d56 100644 --- a/testcases/lib/Makefile +++ b/testcases/lib/Makefile @@ -28,6 +28,7 @@ INSTALL_TARGETS := *.sh MAKE_TARGETS := tst_sleep tst_random tst_checkpoint tst_rod tst_kvcmp\ tst_device tst_net_iface_prefix tst_net_ip_prefix tst_net_vars\ - tst_getconf tst_supported_fs tst_check_drivers tst_get_unused_port + tst_getconf tst_supported_fs tst_check_drivers tst_get_unused_port\ + tst_get_median include $(top_srcdir)/include/mk/generic_leaf_target.mk diff --git a/testcases/lib/tst_get_median.c b/testcases/lib/tst_get_median.c new file mode 100644 index 000000000..5246f12e0 --- /dev/null +++ b/testcases/lib/tst_get_median.c @@ -0,0 +1,37 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* Copyright (c) 2021 Oracle and/or its affiliates. All Rights Reserved. */ + +#include <stdio.h> +#include <stdlib.h> + +static int cmp(const void *a, const void *b) +{ + return (*(int *)a - *(int *)b); +} + +int main(int argc, const char *argv[]) +{ + const size_t size = argc - 1; + + if (!size) { + fprintf(stderr, "Please provide a numeric list\n"); + return 1; + } + if (size == 1) { + printf("%d", atoi(argv[1])); + return 0; + } + + int arr[size]; + size_t i; + + for (i = 0; i < size; ++i) + arr[i] = atoi(argv[i + 1]); + + qsort(arr, size, sizeof(arr[0]), cmp); + + const size_t size2 = size / 2; + printf("%d", (size & 1) ? arr[size2] : ((arr[size2 - 1] + arr[size2]) / 2)); + + return 0; +} |