debian man page for io_check

io_check(3)						     Library Functions Manual						       io_check(3)

NAME
       io_check - check for new readable or writable descriptors

SYNTAX
       #include <io.h>

       int64 io_check();

DESCRIPTION
       io_check is like io_waituntil() with a deadline of now.

SEE ALSO
       io_wait(3), io_waituntil(3)

																       io_check(3)