1 /* 2 * Copyright (c) 1988 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 * 17 * @(#)fdset.h 1.4 (Berkeley) 06/29/88 18 */ 19 20 /* 21 * The following is defined just in case someone should want to run 22 * this telnet on a 4.2 system. 23 * 24 */ 25 26 #ifndef FD_SETSIZE 27 28 #define FD_SET(n, p) ((p)->fds_bits[0] |= (1<<(n))) 29 #define FD_CLR(n, p) ((p)->fds_bits[0] &= ~(1<<(n))) 30 #define FD_ISSET(n, p) ((p)->fds_bits[0] & (1<<(n))) 31 #define FD_ZERO(p) ((p)->fds_bits[0] = 0) 32 33 #endif 34