difftime(3C)
NAME
difftime − computes the difference between two calendar times
SYNOPSIS
#include <time.h>
double difftime(time_t time1, time_t time0);
MT-LEVEL
MT-Safe
DESCRIPTION
difftime() computes the difference between two calendar times. difftime() returns the difference (time1-time0) expressed in seconds as a double. This function is provided because there are no general arithmetic properties defined for type time_t.
SEE ALSO
SunOS 5.5/SPARC — Last change: 22 Jan 1993