SAS: Negative times

If a time value is negative, it could lose the sign depending on the format you choose... Format timew. assumes time, whereas todw. assumes datetime.

data _null_ ;

   format __TIME TIME10. ;

   minutes = -23;

   __TIME = minutes * 60;

   format __TOD10 TOD10. ;

   __TOD10 = minutes * 60;

   __IN_MINUTES = intck( "MINUTES" , 0 , __TIME ) ;

   put _all_ ;

run;

Log

1    data _null_ ;

2       format __TIME TIME10. ;

3       minutes = -23;

4       __TIME = minutes * 60;

5       format __TOD10 TOD10. ;

6       __TOD10 = minutes * 60;

7       __IN_MINUTES = intck( "MINUTES" , 0 , __TIME ) ;

8       put _all_ ;

9    run;

__TIME=-0:23:00 minutes=-23 __TOD10=23:37:00 __IN_MINUTES=-23 _ERROR_=0 _N_=1

NOTE: DATA statement used (Total process time):

      real time           0.05 seconds

      cpu time            0.04 seconds