Defined in /sys/time.h

/*
 * Name   : TIME2NUM(t)
 * Returns: int *
 *
 * This takes a number of seconds 't' and returns an array of four integers
 * with the number of days, hours, minutes and seconds in 't'.
 *
 * Example: TIME2NUM(175417) returns ({ 2, 0, 43, 37 })
 */
