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//===-- Macros defined in sys/select.h header file ------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef __LLVM_LIBC_MACROS_SYS_SELECT_MACROS_H
#define __LLVM_LIBC_MACROS_SYS_SELECT_MACROS_H
#define FD_SETSIZE 1024
#define __FD_SET_WORD_TYPE unsigned long
#define __FD_SET_WORD_SIZE (sizeof(__FD_SET_WORD_TYPE) * 8)
#define __FD_SET_ARRAYSIZE (FD_SETSIZE / __FD_SET_WORD_SIZE)
#define FD_ZERO(set) \
do { \
unsigned i; \
for (i = 0; i < __FD_SET_ARRAYSIZE; ++i) \
(set)->__set[i] = 0; \
} while (0)
#define __FD_WORD(fd) ((fd) / __FD_SET_WORD_SIZE)
#define __FD_MASK(fd) \
((__FD_SET_WORD_TYPE)1) << ((__FD_SET_WORD_TYPE)((fd) % __FD_SET_WORD_SIZE))
#define FD_CLR(fd, set) (void)((set)->__set[__FD_WORD(fd)] &= ~__FD_MASK(fd))
#define FD_SET(fd, set) (void)((set)->__set[__FD_WORD(fd)] |= __FD_MASK(fd))
#define FD_ISSET(fd, set) \
(int)(((set)->__set[__FD_WORD(fd)] & __FD_MASK(fd)) != 0)
#endif // __LLVM_LIBC_MACROS_SYS_SELECT_MACROS_H
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