home *** CD-ROM | disk | FTP | other *** search
- /* VMS Stuff
- Copyright (C) 1992, 1993, 1994 Stanley T. Shebs.
-
- Xconq is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version. See the file COPYING. */
-
- /* fd_set for select. */
-
- /* Number of descriptors that can fit in an `fd_set'. */
- #define __FD_SETSIZE 256
-
- /* It's easier to assume 8-bit bytes than to get CHAR_BIT. */
- #define __NFDBITS (sizeof(unsigned long int) * 8)
- #define __FDELT(d) ((d) / __NFDBITS)
- #define __FDMASK(d) (1 << ((d) % __NFDBITS))
-
- #define __ptr_t char *
-
- typedef struct
- {
- unsigned long int __bits[(__FD_SETSIZE + (__NFDBITS - 1)) / __NFDBITS];
- } __fd_set;
-
- /* This line MUST be split! Otherwise m4 will not change it. */
- #define __FD_ZERO(set) \
- ((void) memset((__ptr_t) (set), 0, sizeof(fd_set)))
- #define __FD_SET(d, set) ((set)->__bits[__FDELT(d)] |= __FDMASK(d))
- #define __FD_CLR(d, set) ((set)->__bits[__FDELT(d)] &= ~__FDMASK(d))
- #define __FD_ISSET(d, set) ((set)->__bits[__FDELT(d)] & __FDMASK(d))
-
- #define FD_SETSIZE __FD_SETSIZE
- #define fd_set __fd_set
- #define FD_ZERO(set) __FD_ZERO(set)
- #define FD_SET(d, set) __FD_SET((d), (set))
- #define FD_CLR(d, set) __FD_CLR((d), (set))
- #define FD_ISSET(d, set)__FD_ISSET((d), (set))
-