381     pub struct fd_set {
3251     pub fn FD_CLR(fd: c_int, set: *mut fd_set) -> () {
3258     pub fn FD_ISSET(fd: c_int, set: *const fd_set) -> bool {
3264     pub fn FD_SET(fd: c_int, set: *mut fd_set) -> () {
3271     pub fn FD_ZERO(set: *mut fd_set) -> () {
3858         readfds: *mut fd_set,  in select()  argument
3859         writefds: *mut fd_set,  in select()  argument
3860         errorfds: *mut fd_set,  in select()  argument
3895         readfds: *mut fd_set,  in pselect()  argument
3896         writefds: *mut fd_set,  in pselect()  argument
3897         errorfds: *mut fd_set,  in pselect()  argument