/* Compatibility header for old-style Unix parameters and limits.

   Copyright (C) 1995-2018 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 Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#ifndef _SYS_PARAM_H

#define _SYS_PARAM_H    1

#define __need_NULL

#include <stddef.h>

#include <sys/types.h>

#include <limits.h>

#include <endian.h>                     /* Define BYTE_ORDER et al.  */

#include <signal.h>                     /* Define NSIG.  */

/* This file defines some things in system-specific ways.  */

#include <bits/param.h>

/* BSD names for some <limits.h> values.  */

#define NBBY		CHAR_BIT

#if !defined NGROUPS && defined NGROUPS_MAX

# define NGROUPS	NGROUPS_MAX

#endif

#if !defined MAXSYMLINKS && defined SYMLOOP_MAX

# define MAXSYMLINKS	SYMLOOP_MAX

#endif

#if !defined CANBSIZ && defined MAX_CANON

# define CANBSIZ	MAX_CANON

#endif

#if !defined MAXPATHLEN && defined PATH_MAX

# define MAXPATHLEN	PATH_MAX

#endif

#if !defined NOFILE && defined OPEN_MAX

# define NOFILE		OPEN_MAX

#endif

#if !defined MAXHOSTNAMELEN && defined HOST_NAME_MAX

# define MAXHOSTNAMELEN	HOST_NAME_MAX

#endif

#ifndef NCARGS

# ifdef ARG_MAX

#  define NCARGS	ARG_MAX

# else

/* ARG_MAX is unlimited, but we define NCARGS for BSD programs that want to

   compare against some fixed limit.  */

# define NCARGS		INT_MAX

# endif

#endif

/* Magical constants.  */

#ifndef NOGROUP

# define NOGROUP	65535     /* Marker for empty group set member.  */

#endif

#ifndef NODEV

# define NODEV		((dev_t) -1)    /* Non-existent device.  */

#endif

/* Unit of `st_blocks'.  */

#ifndef DEV_BSIZE

# define DEV_BSIZE	512

#endif

/* 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

#ifdef __GNUC__

# define roundup(x, y)  (__builtin_constant_p (y) && powerof2 (y)             \

                         ? (((x) + (y) - 1) & ~((y) - 1))                     \

                         : ((((x) + ((y) - 1)) / (y)) * (y)))

#else

# define roundup(x, y)  ((((x) + ((y) - 1)) / (y)) * (y))

#endif

#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))

#endif  /* sys/param.h */