| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* Copyright (C) 1997-2016 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
| 3 | |
| 4 | The GNU C Library is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either |
| 7 | version 2.1 of the License, or (at your option) any later version. |
| 8 | |
| 9 | The GNU C Library is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser General Public |
| 15 | License along with the GNU C Library; if not, see |
| 16 | <http://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #ifndef _SYS_SELECT_H |
| 19 | # error "Never use <bits/select.h> directly; include <sys/select.h> instead." |
| 20 | #endif |
| 21 | |
| 22 | |
| 23 | /* We don't use `memset' because this would require a prototype and |
| 24 | the array isn't too big. */ |
| 25 | #define __FD_ZERO(s) \ |
| 26 | do { \ |
| 27 | unsigned int __i; \ |
| 28 | fd_set *__arr = (s); \ |
| 29 | for (__i = 0; __i < sizeof (fd_set) / sizeof (__fd_mask); ++__i) \ |
| 30 | __FDS_BITS (__arr)[__i] = 0; \ |
| 31 | } while (0) |
| 32 | #define __FD_SET(d, s) \ |
| 33 | ((void) (__FDS_BITS (s)[__FD_ELT(d)] |= __FD_MASK(d))) |
| 34 | #define __FD_CLR(d, s) \ |
| 35 | ((void) (__FDS_BITS (s)[__FD_ELT(d)] &= ~__FD_MASK(d))) |
| 36 | #define __FD_ISSET(d, s) \ |
| 37 | ((__FDS_BITS (s)[__FD_ELT (d)] & __FD_MASK (d)) != 0) |