| 1 | /* Checking macros for select functions. |
|---|
| 2 | Copyright (C) 2011-2024 Free Software Foundation, Inc. |
|---|
| 3 | This file is part of the GNU C Library. |
|---|
| 4 | |
|---|
| 5 | The GNU C Library is free software; you can redistribute it and/or |
|---|
| 6 | modify it under the terms of the GNU Lesser General Public |
|---|
| 7 | License as published by the Free Software Foundation; either |
|---|
| 8 | version 2.1 of the License, or (at your option) any later version. |
|---|
| 9 | |
|---|
| 10 | The GNU C Library is distributed in the hope that it will be useful, |
|---|
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
|---|
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|---|
| 13 | Lesser General Public License for more details. |
|---|
| 14 | |
|---|
| 15 | You should have received a copy of the GNU Lesser General Public |
|---|
| 16 | License along with the GNU C Library; if not, see |
|---|
| 17 | <https://www.gnu.org/licenses/>. */ |
|---|
| 18 | |
|---|
| 19 | #ifndef _SYS_SELECT_H |
|---|
| 20 | # error "Never include <bits/select2.h> directly; use <sys/select.h> instead." |
|---|
| 21 | #endif |
|---|
| 22 | |
|---|
| 23 | #include <bits/select-decl.h> |
|---|
| 24 | |
|---|
| 25 | #undef __FD_ELT |
|---|
| 26 | #define __FD_ELT(d) \ |
|---|
| 27 | __extension__ \ |
|---|
| 28 | ({ long int __d = (d); \ |
|---|
| 29 | (__builtin_constant_p (__d) \ |
|---|
| 30 | ? (0 <= __d && __d < __FD_SETSIZE \ |
|---|
| 31 | ? (__d / __NFDBITS) \ |
|---|
| 32 | : __fdelt_warn (__d)) \ |
|---|
| 33 | : __fdelt_chk (__d)); }) |
|---|
| 34 | |
|---|
