lib/ansi/difftime.c

   1 /*
   2  * difftime - compute the difference between two calendar times
   3  */
   4 /* $Header$ */
   5
   6 #include        <time.h>
   7
   8 double
   9 difftime(time_t time1, time_t time0)
  10 {
  11         /* be careful: time_t may be unsigned */
  12         if ((time_t)-1 > 0 && time0 > time1) {
  13                 return - (double) (time0 - time1);
  14         } else {
  15                 return (double)(time1 - time0);
  16         }
  17 }