Replace looping with direct computation.

src/mtime_timedelta.c

@@ -1760,41 +1760,26 @@ elementwiseScalarMultiplyTimeDelta(struct _timedelta* base_td, int64_t lambda, s
         scaled_td->sign = '+';
 
       /* Sign already handled above. Make lambda positive. */
-      if (lambda < 0)
-        lambda *= -1;
-
+      lambda = (int64_t)(llabs(lambda));
 
       /* Multiply each element by scalar. */
+      int64_t ms_temp = lambda * base_td->ms;
+      scaled_td->ms = (int)(ms_temp % NO_OF_MS_IN_A_SECOND);
+      int64_t s_temp = lambda*base_td->second + ms_temp / NO_OF_MS_IN_A_SECOND;
+      scaled_td->second = (int)(s_temp % 60);
 
-      scaled_td->ms += (int) lambda*base_td->ms;
-      while ( scaled_td->ms >= NO_OF_MS_IN_A_SECOND )
-        {
-          scaled_td->ms -= NO_OF_MS_IN_A_SECOND;
-          scaled_td->second += 1;
-        }
- 
-      scaled_td->second += (int) lambda*base_td->second;
-      while ( scaled_td->second >= 60 )
-        {       
-          scaled_td->second -= 60;
-          scaled_td->minute += 1;
-        }
-   
-      scaled_td->minute += (int) lambda*base_td->minute;
-      while ( scaled_td->minute >= 60 )
-        {
-          scaled_td->minute -= 60;
-          scaled_td->hour += 1;
-        }
+      int64_t m_temp = lambda*base_td->minute + s_temp / 60;
+      scaled_td->minute = (int)(m_temp % 60);
 
-      scaled_td->hour += (int) lambda*base_td->hour;
+      int64_t h_temp = lambda*base_td->hour + m_temp / 60;
+      scaled_td->hour = (int)(h_temp % NO_OF_HOURS_IN_A_DAY);
 
-     /* Scalar multiplication can not give a value in excess of 24 hours. */
-     if ( scaled_td->hour >= NO_OF_HOURS_IN_A_DAY )
-       {
-         /* ERROR: Return on NULL. */
-         return NULL;
-       }
+      /* Scalar multiplication must not give a value in excess of 24 hours. */
+      if ( h_temp >= NO_OF_HOURS_IN_A_DAY )
+        {
+          /* ERROR: Return on NULL. */
+          return NULL;
+        }
 
       scaled_td->day    = 0;
       scaled_td->month  = 0;