PR_IMPLEMENT(PRInt32) PR_FD_ISSET(PRFileDesc *fh, PR_fd_set *set)
PR_IMPLEMENT(PRInt32) PR_Select( PRInt32 unused, PR_fd_set *pr_rd, PR_fd_set *pr_wr, PR_fd_set *pr_ex, PRIntervalTime timeout)
PR_IMPLEMENT(PRInt32) PR_FD_ISSET(PRFileDesc *fh, PR_fd_set *set){	PRUint32 index;	for (index = 0; index<set->hsize; index++)		if (set->harray[index] == fh) {			return 1;		}	return 0;}