Initial revision

lib/ansi/difftime.c

@@ -0,0 +1,17 @@
+/*
+ * difftime - compute the difference between two calendar times
+ */
+/* $Header$ */
+
+#include	<time.h>
+
+double
+difftime(time_t time1, time_t time0)
+{
+	/* be careful: time_t may be unsigned */
+	if ((time_t)-1 > 0 && time0 > time1) {
+		return - (double) (time0 - time1);
+	} else {
+		return (double)(time1 - time0);
+	}
+}