1 files changed, 31 insertions, 0 deletions
diff --git a/src/string/strncmp.c b/src/string/strncmp.c
new file mode 100644
index 00000000..23c8104e
--- /dev/null
+++ b/src/string/strncmp.c
@@ -0,0 +1,31 @@
+#include <string.h>
+#include "nonstd/assert.h"
+
+/** compare bound strings **/
+int strncmp(const char *s1, const char *s2, size_t n)
+{
+	ASSERT_NONNULL(s1);
+	ASSERT_NONNULL(s2);
+
+	if (strlen(s1) < n) {
+		n = strlen(s1);
+	}
+	if (strlen(s2) < n) {
+		n = strlen(s2);
+	}
+
+	/*
+	RETURN(NEGATIVE, ARGUMENT(s1) is less than ARGUMENT(s2));
+	RETURN(ZERO, ARGUMENT(s1) is equal to ARGUMENT(s2));
+	RETURN(POSITIVE, ARGUMENT(s1) is greater than ARGUMENT(s2));
+	*/
+	return memcmp(s1, s2, n);
+}
+
+/***
+compares up to the first ARGUMENT(n) bytes of the strings at ARGUMENT(s1) and
+ARGUMENT(s2), or until the first CHAR(\0), whichever comes first.
+***/
+/*
+STDC(1)
+*/