The following example scales and prints a relative time. utc_t relutc, scaledutc; struct tm sacledreltm; char timstr[UTC_MAX_STR_LEN]; /* * Assume relutc contains the time to scale. * Scale it by a factor of 17... */ utc_multime(&scaledutc, /* Out: Scaled rel time */ &relutc, /* In: Rel time to scale */ 17L); /* In: Scale factor */ utc_ascreltime(timstr, /* Out: ASCII rel time */ UTC_MAX_STR_LEN, /* In: Length of input str */ &scaledutc); /* In: Rel time to convert */ printf("%s\n",timstr); /* * Scale it by a factor of 17.65... */ utc_mulftime(&scaledutc, /* Out: Scaled rel time */ &relutc, /* In: Rel time to scale */ 17.65); /* In: Scale factor */ utc_ascreltime(timstr, /* Out: ASCII rel time */ UTC_MAX_STR_LEN, /* In: Input str length */ &scaledutc); /* In: Rel time to convert */ printf("%s\n",timstr); /* * Convert it to a tm structure and print it. */ utc_reltime(&scaledreltm, /* Out: Scaled rel tm */ (long *)0, /* Out: Scaled rel nano-sec */ (struct tm *)0, /* Out: Scaled rel inacc tm */ (long *)0, /* Out: Scd rel inacc nanos */ &scaledutc); /* In: Rel time to convert */ printf("Approximately %d days, %d hours and %d minutes\n", scaledreltm.tm_yday, scaledreltm.tm_hour, scaledreltm.tm_min);