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

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Copyright (C) 1995-2018 Free Software Foundation, Inc.

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This file is part of the GNU C Library.

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The GNU C Library is free software; you can redistribute it and/or

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modify it under the terms of the GNU Lesser General Public

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License as published by the Free Software Foundation; either

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version 2.1 of the License, or (at your option) any later version.

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The GNU C Library is distributed in the hope that it will be useful,

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but WITHOUT ANY WARRANTY; without even the implied warranty of

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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Lesser General Public License for more details.

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

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

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

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#ifndef _SYS_PARAM_H

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#define _SYS_PARAM_H 1

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#define __need_NULL

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#include <stddef.h>

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#include <sys/types.h>

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#include <limits.h>

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

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

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

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#include <bits/param.h>

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

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#define NBBY CHAR_BIT

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#if !defined NGROUPS && defined NGROUPS_MAX

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# define NGROUPS NGROUPS_MAX

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#endif

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#if !defined MAXSYMLINKS && defined SYMLOOP_MAX

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# define MAXSYMLINKS SYMLOOP_MAX

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#endif

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#if !defined CANBSIZ && defined MAX_CANON

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# define CANBSIZ MAX_CANON

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#endif

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#if !defined MAXPATHLEN && defined PATH_MAX

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# define MAXPATHLEN PATH_MAX

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#endif

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#if !defined NOFILE && defined OPEN_MAX

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# define NOFILE OPEN_MAX

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#endif

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#if !defined MAXHOSTNAMELEN && defined HOST_NAME_MAX

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# define MAXHOSTNAMELEN HOST_NAME_MAX

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#endif

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#ifndef NCARGS

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# ifdef ARG_MAX

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# define NCARGS ARG_MAX

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# else

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

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compare against some fixed limit. */

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# define NCARGS INT_MAX

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# endif

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#endif

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/* Magical constants. */

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#ifndef NOGROUP

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

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#endif

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#ifndef NODEV

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

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#endif

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/* Unit of `st_blocks'. */

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#ifndef DEV_BSIZE

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# define DEV_BSIZE 512

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#endif

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/* Bit map related macros. */

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#define setbit(a,i) ((a)[(i)/NBBY] |= 1<<((i)%NBBY))

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#define clrbit(a,i) ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))

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#define isset(a,i) ((a)[(i)/NBBY] & (1<<((i)%NBBY)))

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#define isclr(a,i) (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)

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/* Macros for counting and rounding. */

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#ifndef howmany

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# define howmany(x, y) (((x) + ((y) - 1)) / (y))

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#endif

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#ifdef __GNUC__

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

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

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

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#else

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

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#endif

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#define powerof2(x) ((((x) - 1) & (x)) == 0)

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/* Macros for min/max. */

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#define MIN(a,b) (((a)<(b))?(a):(b))

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#define MAX(a,b) (((a)>(b))?(a):(b))

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#endif /* sys/param.h */

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