.

[gnulib.git] / lib / getdate.y

diff --git a/lib/getdate.y b/lib/getdate.y
index 35d064f..63b9e7c 100644 (file)
--- a/lib/getdate.y
+++ b/lib/getdate.y
@@ -887,27 +887,25 @@ yylex()
 #define TM_YEAR_ORIGIN 1900
 
 /* Yield A - B, measured in seconds.  */
-static time_t
-difftm(a, b)
+static long
+difftm (a, b)
      struct tm *a, *b;
 {
   int ay = a->tm_year + (TM_YEAR_ORIGIN - 1);
   int by = b->tm_year + (TM_YEAR_ORIGIN - 1);
-  return
-    (
-     (
-      (
-       /* difference in day of year */
-       a->tm_yday - b->tm_yday
-       /* + intervening leap days */
-       +  ((ay >> 2) - (by >> 2))
-       -  (ay/100 - by/100)
-       +  ((ay/100 >> 2) - (by/100 >> 2))
-       /* + difference in years * 365 */
-       +  (time_t)(ay-by) * 365
-       )*24 + (a->tm_hour - b->tm_hour)
-      )*60 + (a->tm_min - b->tm_min)
-     )*60 + (a->tm_sec - b->tm_sec);
+  int days = (
+             /* difference in day of year */
+             a->tm_yday - b->tm_yday
+             /* + intervening leap days */
+             +  ((ay >> 2) - (by >> 2))
+             -  (ay/100 - by/100)
+             +  ((ay/100 >> 2) - (by/100 >> 2))
+             /* + difference in years * 365 */
+             +  (long)(ay-by) * 365
+             );
+  return (60*(60*(24*days + (a->tm_hour - b->tm_hour))
+             + (a->tm_min - b->tm_min))
+         + (a->tm_sec - b->tm_sec));
 }
 
 time_t