Bug #4966: Speed julianDeltaToTimeDelta()

src/mtime_timedelta.c

@@ -805,6 +805,16 @@ julianDeltaToTimeDelta(struct _juliandelta* jd, struct _datetime* base_dt, struc
           int64_t j = base_dt->date.year;
           /* Initialize to 0. */
           td_return->year = 0;
+
+		  /* Fast-Fwd: >= 400 */
+          while (days >= NO_OF_DAYS_IN_400_YEARS)
+            {
+                  td_return->year = td_return->year + 400;
+                  j = j + 400;
+                  days = days - NO_OF_DAYS_IN_400_YEARS;
+
+            };
+
           do
             {
 
@@ -895,6 +905,16 @@ julianDeltaToTimeDelta(struct _juliandelta* jd, struct _datetime* base_dt, struc
           int64_t j = base_dt->date.year;
           /* Initialize. */
           td_return->year = 0;
+
+	  /* Fast-Fwd: >= 400  */
+          while (days >= NO_OF_DAYS_IN_400_YEARS)
+            {
+                  td_return->year = td_return->year + 400;
+                  j = j - 400;
+                  days = days - NO_OF_DAYS_IN_400_YEARS;
+		
+            };
+
           do
             {
               /* Loop over and get the year by substracting 366/365 days depending