diff --git a/src/misc/misc_time.c b/src/misc/misc_time.c
index 2dcf2dd51..9b156fc89 100644
--- a/src/misc/misc_time.c
+++ b/src/misc/misc_time.c
@@ -43,6 +43,27 @@ datestring(void)
 #endif
 }
 
+/* return time interval in seconds and milliseconds */
+
+#ifdef HAVE_FTIME
+
+struct timeb timebegin;
+
+void timediff(struct timeb *now, struct timeb *begin, int *sec, int *msec)
+{
+
+    *msec = (int) now->millitm - (int) begin->millitm;
+    *sec = (int) now->time - (int) begin->time;
+    if (*msec < 0) {
+      *msec += 1000;
+      (*sec)--;
+    }
+    return;
+
+}
+
+#endif
+
 /* 
  * How many seconds have elapsed in running time. 
  * This is the routine called in IFseconds 
diff --git a/src/misc/misc_time.h b/src/misc/misc_time.h
index a9fb85029..7c99ad9ce 100644
--- a/src/misc/misc_time.h
+++ b/src/misc/misc_time.h
@@ -18,4 +18,12 @@ void perf_timer_start(PerfTimer *);
 void perf_timer_stop(PerfTimer *);
 void perf_timer_elapsed_sec_ms(const PerfTimer *, int *, int *);
 
+#ifdef HAVE_FTIME
+
+extern struct timeb timebegin;
+
+void timediff(struct timeb *, struct timeb *, int *, int *);
+
+#endif
+
 #endif