1 files changed, 40 insertions, 0 deletions
diff --git a/src/wchar/wcsncmp.c b/src/wchar/wcsncmp.c
new file mode 100644
index 0000000..c1e5707
--- /dev/null
+++ b/src/wchar/wcsncmp.c
@@ -0,0 +1,40 @@
+/**
+ * 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 <wchar.h>
+
+
+
+/**
+ * Compare two strings alphabetically in a case sensitive manner.
+ * 
+ * This is a GNU-compliant slibc extension.
+ * 
+ * @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 wcsncmp(const wchar_t* a, const wchar_t* b, size_t length)
+{
+  size_t n = wcsnlen(a, length);
+  size_t m = wcsnlen(b, length);
+  int r = wmemcmp(a, b, (n < m ? n : m));
+  return r ? r : n == m ? 0 : n < m ? -1 : +1;
+}
+