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/*
* Project : tin - a Usenet reader
* Module : missing_fd.h
* Author : Dennis Grevenstein <dennis.grevenstein@gmail.com>
* Created : 2019-03-09
* Updated : 2019-03-13
* Notes :
*
* Copyright (c) 2019-2026 Dennis Grevenstein <dennis.grevenstein@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TIN_MISSING_FD_H
# define TIN_MISSING_FD_H
# ifndef HAVE_TYPE_FD_SET
/* for SunOS 3.5 */
/* luna - 09-MAR-2019 */
# if defined(sun) || defined(__sun) /* && (!defined(__SVR4) || !defined(__svr4__)) && defined(BSD) && BSD < 199306 */
typedef long fd_mask;
# ifndef FD_SETSIZE
# ifdef SUNDBE /* Sun DataBase Excelerator */
# define FD_SETSIZE 2048
# else
# define FD_SETSIZE 256
# endif /* SUNDBE */
# endif /* !FD_SETSIZE */
# ifndef NBBY
# define NBBY 8 /* bits per byte */
# endif /* !NBBY */
# define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */
# ifndef howmany
# define howmany(x, y) (((x) + ((y) - 1)) / (y))
# endif /* !howmany */
typedef struct fd_set {
fd_mask fds_bits[howmany(FD_SETSIZE, NFDBITS)];
} fd_set;
# define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
# define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
# define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
# define FD_ZERO(p) memset((void *)(p), 0, sizeof (*(p)))
# endif /* sun || __sun */
# endif /* !HAVE_TYPE_FD_SET */
#endif /* !TIN_MISSING_FD_H */
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