mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-21 01:12:26 +08:00
71a14d6483
1998-02-17 Ulrich Drepper <drepper@cygnus.com> * sysdeps/generic/bits/select.h (__FD_ISSET): Compare result with 0 to get always an int. Make compatible with older kernels. Patch by Richard Henderson.
36 lines
1.6 KiB
C
36 lines
1.6 KiB
C
/* Copyright (C) 1997, 1998 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 Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#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(set) \
|
|
do { \
|
|
unsigned int __i; \
|
|
__fd_set *__arr = (set); \
|
|
for (__i = 0; __i < sizeof (__fd_set) / sizeof (__fd_mask); ++__i) \
|
|
__arr->fds_bits[__i] = '\0'; \
|
|
} while (0)
|
|
#define __FD_SET(d, set) ((set)->fds_bits[__FDELT(d)] |= __FDMASK(d))
|
|
#define __FD_CLR(d, set) ((set)->fds_bits[__FDELT(d)] &= ~__FDMASK(d))
|
|
#define __FD_ISSET(d, set) (((set)->fds_bits[__FDELT(d)] & __FDMASK(d)) != 0)
|