source: trunk/minix/lib/ansi/difftime.c@ 15

/*
 * difftime - compute the difference between two calendar times
 */
/* $Header: /cvsup/minix/src/lib/ansi/difftime.c,v 1.1.1.1 2005/04/21 14:56:04 beng Exp $ */

#include        <time.h>

double
difftime(time_t time1, time_t time0)
{
        /* be careful: time_t may be unsigned */
        if ((time_t)-1 > 0 && time0 > time1) {
                return - (double) (time0 - time1);
        } else {
                return (double)(time1 - time0);
        }
}