NAME

difftime — compute the difference between two calendar time values

SYNOPSIS

#include <time.h>

double difftime(time_t time1, time_t time0);

DESCRIPTION

The difftime() function computes the difference between two calendar times (as returned by time(3) ): time1 - time0 .

RETURN VALUE

The difftime() function returns the difference expressed in seconds as a type double .

ERRORS

No errors are defined.

EXAMPLES

None.

APPLICATION USAGE

None.

FUTURE DIRECTIONS

None.

SEE ALSO

asctime(3) , clock(3) , ctime(3) , gmtime(3) , localtime(3) , mktime(3) , strftime(3) , strptime(3) , time(3) , utime(3) , <time.h> .

DERIVATION

Derived from the ISO C standard.