XFD_ISSET         87 x68/select.c   		if (XFD_ISSET (fd, rfds) && isreadable (accmode) && _dos_k_keysns ())
XFD_ISSET         93 x68/select.c   		if (XFD_ISSET (fd, wfds) && iswritable (accmode))
XFD_ISSET        102 x68/select.c   		if (XFD_ISSET (fd, rfds) && _socklen (_fddb[fd].sockno, 0))
XFD_ISSET        108 x68/select.c   		if (XFD_ISSET (fd, wfds) /* && _socklen (_fddb[fd].sockno, 1) == 0 */)
XFD_ISSET        117 x68/select.c   		if (XFD_ISSET (fd, rfds) && isreadable (accmode) && _dos_ioctrlis (fd))
XFD_ISSET        123 x68/select.c   		if (XFD_ISSET (fd, wfds) && iswritable (accmode) && _dos_ioctrlos (fd))