diff options
author | Mattias Andrée <maandree@operamail.com> | 2015-11-17 05:50:23 +0100 |
---|---|---|
committer | Mattias Andrée <maandree@operamail.com> | 2015-11-17 05:50:23 +0100 |
commit | c99cadbe02f659264cecb44c053d96383631147d (patch) | |
tree | baeb59b9b45e7ea798c92dc04af9ea55db8a3d2b /src/string/str/strncmp.c | |
parent | add strset (diff) | |
download | slibc-c99cadbe02f659264cecb44c053d96383631147d.tar.gz slibc-c99cadbe02f659264cecb44c053d96383631147d.tar.bz2 slibc-c99cadbe02f659264cecb44c053d96383631147d.tar.xz |
rearrange files
Signed-off-by: Mattias Andrée <maandree@operamail.com>
Diffstat (limited to 'src/string/str/strncmp.c')
-rw-r--r-- | src/string/str/strncmp.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/string/str/strncmp.c b/src/string/str/strncmp.c new file mode 100644 index 0000000..daf5be5 --- /dev/null +++ b/src/string/str/strncmp.c @@ -0,0 +1,39 @@ +/** + * slibc — Yet another C library + * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org) + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ +#include <string.h> + + + +/** + * Compare two strings alphabetically in a case sensitive manner. + * + * @param a A negative value is returned if this is the lesser. + * @param b A positive value is returned if this is the lesser. + * @param length The maximum number of characters to compare. + * @return Zero is returned if `a` and `b` are equal, otherwise, + * see the specifications for `a` and `b`. + */ +int strncmp(const char* a, const char* b, size_t length) +{ + size_t n = strnlen(a, length); + size_t m = strnlen(b, length); + int r = memcmp(a, b, (n < m ? n : m)); + return r ? r : n == m ? 0 : n < m ? -1 : +1; +} + + |