select

function select(

  __nfds: LongInt;

  __readfds: Pfd_set;

  __writefds: Pfd_set;

  __exceptfds: Pfd_set;

  __timeout: Ptimeval

):LongInt;

function select(

  __nfds: LongInt;

  __readfds: Pfd_set;

  __writefds: Pfd_set;

  __exceptfds: Pfd_set;

  var __timeout: timeval

):LongInt;

function select(

  __nfds: LongInt;

  var __readfds: _fd_set;

  var __writefds: _fd_set;

  var __exceptfds: _fd_set;

  var __timeout: timeval

):LongInt;