NAME

     difftime - calculate time difference

SYNOPSIS

     #include <time.h>

     double difftime(time_t time1, time_t time0));

DESCRIPTION

     The  difftime()  function  returns  the  number  of  seconds
     elapsed  between  time  time1 and time time0.  The two times
     are specified in calendar time, which  represents  the  time
     elapsed  since  00:00:00  on  January  1,  1970, Coordinated
     Universal Time (UTC).

CONFORMING TO

     SVID 3, BSD 4.3, ISO 9899

SEE ALSO

     date(1),  gettimeofday(2),  time(2),  ctime(3),   gmtime(3),
     localtime(3)