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6d7e8eda | 1 | /* Copyright (C) 1997-2023 Free Software Foundation, Inc. |
54d79e99 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
54d79e99 | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
28f540f4 | 8 | |
54d79e99 UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
28f540f4 | 17 | |
5107cf1d | 18 | #ifndef _SYS_SELECT_H |
4547c1a4 | 19 | # error "Never use <bits/select.h> directly; include <sys/select.h> instead." |
5107cf1d UD |
20 | #endif |
21 | ||
28f540f4 | 22 | |
61eb22d3 | 23 | /* We don't use `memset' because this would require a prototype and |
cd6ede75 | 24 | the array isn't too big. */ |
6e2cc2c1 | 25 | #define __FD_ZERO(s) \ |
cd6ede75 UD |
26 | do { \ |
27 | unsigned int __i; \ | |
2ff458eb UD |
28 | fd_set *__arr = (s); \ |
29 | for (__i = 0; __i < sizeof (fd_set) / sizeof (__fd_mask); ++__i) \ | |
655b26bb | 30 | __FDS_BITS (__arr)[__i] = 0; \ |
cd6ede75 | 31 | } while (0) |
f257bbd7 | 32 | #define __FD_SET(d, s) \ |
e529793b | 33 | ((void) (__FDS_BITS (s)[__FD_ELT(d)] |= __FD_MASK(d))) |
f257bbd7 | 34 | #define __FD_CLR(d, s) \ |
e529793b AS |
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) |