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authorMattias Andrée <maandree@operamail.com>2015-11-17 05:50:23 +0100
committerMattias Andrée <maandree@operamail.com>2015-11-17 05:50:23 +0100
commitc99cadbe02f659264cecb44c053d96383631147d (patch)
treebaeb59b9b45e7ea798c92dc04af9ea55db8a3d2b /src/string/str/strncmp.c
parentadd strset (diff)
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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.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/src/string/str/strncmp.c b/src/string/str/strncmp.c
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+++ 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;
+}
+
+