Defined in /sys/time.h

/*
 * Name   : CONVTIME(t)
 * Returns: string
 *
 * This takes a number of seconds 't' and converts it into a verbose string
 * with the number of days, hours, minutes and seconds in 't'. A component
 * that is zero will not be printed.
 *
 * Example: CONVTIME(175417) returns "2 days 43 minutes 37 seconds"
 */
