1 files changed, 22 insertions, 0 deletions
diff --git a/sys/libc/strncmp.c b/sys/libc/strncmp.c
new file mode 100644
index 00000000..089df283
--- /dev/null
+++ b/sys/libc/strncmp.c
@@ -0,0 +1,22 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+*/
+
+#define	import_libc
+#include <iraf.h>
+
+/* STRNCMP -- Compare up to the first N characters of two strings.  -N is
+** returned if S1 < S2, 0 if S1 == S2, and +N if S1 > S2.
+*/
+int
+strncmp (
+  char	*s1,
+  char	*s2,
+  int	n
+)
+{
+	while (--n >= 0 && *s1 == *s2++)
+	    if (*s1++ == '\0')
+		return (0);
+
+	return (n < 0 ? 0 : *s1 - *--s2);
+}