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- /* Copyright (C) 1997-2016 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
- #ifndef _SYS_SELECT_H
- # error "Never use <bits/select.h> directly; include <sys/select.h> instead."
- #endif
- /* We don't use `memset' because this would require a prototype and
- the array isn't too big. */
- #define __FD_ZERO(s) \
- do { \
- unsigned int __i; \
- fd_set *__arr = (s); \
- for (__i = 0; __i < sizeof (fd_set) / sizeof (__fd_mask); ++__i) \
- __FDS_BITS (__arr)[__i] = 0; \
- } while (0)
- #define __FD_SET(d, s) \
- ((void) (__FDS_BITS (s)[__FD_ELT(d)] |= __FD_MASK(d)))
- #define __FD_CLR(d, s) \
- ((void) (__FDS_BITS (s)[__FD_ELT(d)] &= ~__FD_MASK(d)))
- #define __FD_ISSET(d, s) \
- ((__FDS_BITS (s)[__FD_ELT (d)] & __FD_MASK (d)) != 0)
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