MINVAL
#define TIME_T_MIN_NO_PADDING MINVAL(time_t, TYPE_BIT(time_t))
static zic_t const min_time = MINVAL(zic_t, TIME_T_BITS_IN_FILE);
static zic_t lo_time = MINVAL(zic_t, TIME_T_BITS_IN_FILE);
static zic_t redundant_time = MINVAL(zic_t, TIME_T_BITS_IN_FILE);