1 files changed, 26 insertions, 0 deletions
diff --git a/sys/libc/strncat.c b/sys/libc/strncat.c
new file mode 100644
index 00000000..9deae4eb
--- /dev/null
+++ b/sys/libc/strncat.c
@@ -0,0 +1,26 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+*/
+
+#define	import_libc
+#include <iraf.h>
+
+
+/* STRNCAT -- Concatenate at most N chars from S2 onto S1.
+*/
+char *
+strncat (
+  char	*s1,			/* output string		*/
+  char	*s2,			/* string to be appended	*/
+  int	n		/* max length of S1		*/
+)
+{
+	register char	*ip, *op;
+
+	for (op=s1;  *op++;  )
+	    ;
+	for (--op, ip=s2;  (*op++ = *ip++) && --n >= 0;  )
+	    ;
+	*--op = '\0';
+
+	return (s1);
+}