Initial revision

lang/pc/libpc/mdi.c

@@ -0,0 +1,32 @@
+/*
+ * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ *
+ *          This product is part of the Amsterdam Compiler Kit.
+ *
+ * Permission to use, sell, duplicate or disclose this software must be
+ * obtained in writing. Requests for such permissions may be sent to
+ *
+ *      Dr. Andrew S. Tanenbaum
+ *      Wiskundig Seminarium
+ *      Vrije Universiteit
+ *      Postbox 7161
+ *      1007 MC Amsterdam
+ *      The Netherlands
+ *
+ */
+
+/* Author: J.W. Stevenson */
+
+#include	<pc_err.h>
+
+extern		_trp();
+
+int _mdi(j,i) int j,i; {
+
+	if (j <= 0)
+		_trp(EMOD);
+	i = i % j;
+	if (i < 0)
+		i += j;
+	return(i);
+}