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/* Copyright (C) 1993, 1994, 1995 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., 675 Mass Ave,
Cambridge, MA 02139, USA. */
/* This file is deprecated and is provided only for compatibility with
Unix systems. It is unwise to include this file on programs which
are intended only for GNU systems.
Parts from:
* Copyright (c) 1982, 1986, 1989 The Regents of the University of California.
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University 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 REGENTS AND CONTRIBUTORS ``AS IS'' 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 REGENTS 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.
*
* @(#)param.h 7.23 (Berkeley) 5/6/91
*/
#ifndef _SYS_PARAM_H
#define _SYS_PARAM_H 1
#include <features.h>
#define __need_NULL
#include <stddef.h>
#include <sys/types.h>
#include <errno.h>
#include <signal.h>
#include <endian.h>
#include <limits.h>
#ifdef notyet
#include <ufs/param.h>
#endif
/* What versions of BSD we are compatible with. */
#define BSD 199306 /* System version (year & month). */
#define BSD4_3 1
#define BSD4_4 1
#define GNU 1994100 /* GNU version (year, month, and release). */
/* BSD names for some <limits.h> values. We do not define the BSD names
for the values which are not statically limited, such as NOFILE. */
#define NBBY CHAR_BIT
#define NGROUPS NGROUPS_MAX
#define MAXSYMLINKS SYMLOOP_MAX
#define CANBSIZ MAX_CANON /* XXX ? */
/* ARG_MAX is unlimited, but we define NCARGS for BSD programs that want to
compare against some fixed limit. */
#define NCARGS INT_MAX
/* There is nothing quite equivalent in GNU to Unix "mounts", but there is
no limit on the number of simultaneously attached filesystems. */
#define NMOUNT INT_MAX
/* Magical constants. */
#define NOGROUP 65535 /* Marker for empty group set member. */
#define NODEV ((dev_t) -1) /* Non-existent device. */
/* Bit map related macros. */
#define setbit(a,i) ((a)[(i)/NBBY] |= 1<<((i)%NBBY))
#define clrbit(a,i) ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
#define isset(a,i) ((a)[(i)/NBBY] & (1<<((i)%NBBY)))
#define isclr(a,i) (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
/* Macros for counting and rounding. */
#ifndef howmany
#define howmany(x, y) (((x)+((y)-1))/(y))
#endif
#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
#define powerof2(x) ((((x)-1)&(x))==0)
/* Macros for min/max. */
#define MIN(a,b) (((a)<(b))?(a):(b))
#define MAX(a,b) (((a)>(b))?(a):(b))
/* Scale factor for scaled integers used to count %cpu time and load avgs.
The number of CPU `tick's that map to a unique `%age' can be expressed
by the formula (1 / (2 ^ (FSHIFT - 11))). The maximum load average that
can be calculated (assuming 32 bits) can be closely approximated using
the formula (2 ^ (2 * (16 - FSHIFT))) for (FSHIFT < 15). */
#define FSHIFT 11 /* Bits to right of fixed binary point. */
#define FSCALE (1<<FSHIFT)
#endif /* sys/param.h */
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