proc gmtime(): struct_time {....raises: [], tags: [TimeEffect], forbids: [].}

proc gmtime(secs: float): struct_time {....raises: [], tags: [], forbids: [].}

proc gmtime(secs: int64): struct_time {....raises: [], tags: [], forbids: [].}

proc localtime(): struct_time {....raises: [], tags: [TimeEffect], forbids: [].}

proc localtime(secs: float): struct_time {....raises: [], tags: [], forbids: [].}

proc localtime(secs: int64): struct_time {....raises: [], tags: [], forbids: [].}

func mktime(t: struct_time): float {....raises: [], tags: [], forbids: [].}

func mktime(tup: struct_time_tuple): typeof(mktime do:
  bind struct_time
  struct_time(tm_year: 1900, tm_mon: 1, tm_mday: 1, tm_yday: 1, tm_isdst: -1)) {.
    ...raises: [], tags: [], forbids: [].}