Datei: /usr/include/limits.h

/*	Copyright (c) 1988 AT&T	*/
/*	  All Rights Reserved  	*/

/*	THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T	*/
/*	The copyright notice above does not evidence any   	*/
/*	actual or intended publication of such source code.	*/

#ifndef _LIMITS_H
#define	_LIMITS_H

#pragma ident	"@(#)limits.h	1.26	95/08/24 SMI"	/* SVr4.0 1.34  */

#include <sys/feature_tests.h>

#ifdef	__cplusplus
extern "C" {
#endif

/*
 * Sizes of integral types
 */
#define	CHAR_BIT	8		/* max # of bits in a "char" */
#define	SCHAR_MIN	(-128)		/* min value of a "signed char" */
#define	SCHAR_MAX	127		/* max value of a "signed char" */
#define	UCHAR_MAX	255		/* max value of an "unsigned char" */

#define	MB_LEN_MAX	5

#define	CHAR_MIN	SCHAR_MIN	/* min value of a "char" */
#define	CHAR_MAX	SCHAR_MAX	/* max value of a "char" */

#define	SHRT_MIN	(-32768)	/* min value of a "short int" */
#define	SHRT_MAX	32767		/* max value of a "short int" */
#define	USHRT_MAX	65535		/* max value of "unsigned short int" */
#define	INT_MIN		(-2147483647-1)	/* min value of an "int" */
#define	INT_MAX		2147483647	/* max value of an "int" */
#define	UINT_MAX	4294967295U	/* max value of an "unsigned int" */
#define	LONG_MIN	(-2147483647L-1L)	/* min value of a "long int" */
#define	LONG_MAX	2147483647L	/* max value of a "long int" */
#define	ULONG_MAX	4294967295UL 	/* max value of "unsigned long int" */

#if defined(__EXTENSIONS__) || __STDC__ - 0 == 0 || \
	defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)

#define	SSIZE_MAX	INT_MAX		/* max value of an "ssize_t" */

/*
 * ARG_MAX is calculated as follows:
 * NCARGS - ((sizeof(struct arg_hunk *))*(0x10000/(sizeof)(struct arg_hunk)))
 */
#define	ARG_MAX		1048320	/* max length of arguments to exec */

#define	LINK_MAX	32767	/* max # of links to a single file */

#ifndef MAX_CANON
#define	MAX_CANON	256	/* max bytes in line for canonical processing */
#endif

#ifndef MAX_INPUT
#define	MAX_INPUT	512	/* max size of a char input buffer */
#endif

#define	NGROUPS_MAX	16	/* max number of groups for a user */

#ifndef PATH_MAX
#define	PATH_MAX	1024	/* max # of characters in a path name */
#endif

#define	PIPE_BUF	5120	/* max # bytes atomic in write to a pipe */

#ifndef TMP_MAX
#define	TMP_MAX		17576	/* 26 * 26 * 26 */
#endif

/*
 * POSIX conformant definitions - An implementation may define
 * other symbols which reflect the actual implementation. Alternate
 * definitions may not be as restrictive as the POSIX definitions.
 */
#define	_POSIX_AIO_LISTIO_MAX	    2
#define	_POSIX_AIO_MAX		    1
#define	_POSIX_ARG_MAX		 4096
#define	_POSIX_CHILD_MAX	    6
#define	_POSIX_DELAYTIMER_MAX	   32
#define	_POSIX_LINK_MAX		    8
#define	_POSIX_MAX_CANON	  255
#define	_POSIX_MAX_INPUT	  255
#define	_POSIX_MQ_OPEN_MAX	    8
#define	_POSIX_MQ_PRIO_MAX	   32
#define	_POSIX_NAME_MAX		   14
#define	_POSIX_NGROUPS_MAX	    0
#define	_POSIX_OPEN_MAX		   16
#define	_POSIX_PATH_MAX		  255
#define	_POSIX_PIPE_BUF		  512
#define	_POSIX_RTSIG_MAX	    8
#define	_POSIX_SEM_NSEMS_MAX	  256
#define	_POSIX_SEM_VALUE_MAX	32767
#define	_POSIX_SIGQUEUE_MAX	   32
#define	_POSIX_SSIZE_MAX	32767
#define	_POSIX_STREAM_MAX	    8
#define	_POSIX_TIMER_MAX	   32
#define	_POSIX_TZNAME_MAX	    3
/* POSIX.1c conformant */
#define	_POSIX_LOGIN_NAME_MAX			9
#define	_POSIX_THREAD_DESTRUCTOR_INTERATION	4
#define	_POSIX_THREAD_KEYS_MAX			128
#define	_POSIX_THREAD_THREADS_MAX		64
#define	_POSIX_TTY_NAME_MAX			9

/*
 * POSIX.2 and XPG4-XSH4 conformant definitions
 */

#define	_POSIX2_BC_BASE_MAX		  99
#define	_POSIX2_BC_DIM_MAX		2048
#define	_POSIX2_BC_SCALE_MAX		  99
#define	_POSIX2_BC_STRING_MAX		1000
#define	_POSIX2_COLL_WEIGHTS_MAX	   2
#define	_POSIX2_EXPR_NEST_MAX		  32
#define	_POSIX2_LINE_MAX		2048
#define	_POSIX2_RE_DUP_MAX		 255

#define	BC_BASE_MAX		_POSIX2_BC_BASE_MAX
#define	BC_DIM_MAX		_POSIX2_BC_DIM_MAX
#define	BC_SCALE_MAX		_POSIX2_BC_SCALE_MAX
#define	BC_STRING_MAX		_POSIX2_BC_STRING_MAX
#define	COLL_WEIGHTS_MAX	_POSIX2_COLL_WEIGHTS_MAX
#define	EXPR_NEST_MAX		_POSIX2_EXPR_NEST_MAX
#define	LINE_MAX		_POSIX2_LINE_MAX
#define	RE_DUP_MAX		_POSIX2_RE_DUP_MAX

#endif /* defined(__EXTENSIONS__) ||  __STDC__ - 0 == 0 || ... */

#if defined(__EXTENSIONS__) || \
	(__STDC__ - 0 == 0 && !defined(_POSIX_C_SOURCE)) || \
	defined(_XOPEN_SOURCE)

#define	PASS_MAX	8	/* max # of characters in a password */

#define	CHARCLASS_NAME_MAX	14	/* max # bytes in a char class name */
#define	NL_ARGMAX	9	/* max value of "digit" in calls to the	*/
				/* NLS printf() and scanf() */
#define	NL_LANGMAX	14	/* max # of bytes in a LANG name */
#define	NL_MSGMAX	32767	/* max message number */
#define	NL_NMAX		1	/* max # bytes in N-to-1 mapping characters */
#define	NL_SETMAX	255	/* max set number */
#define	NL_TEXTMAX	2048	/* max set number */
#define	NZERO		20	/* default process priority */

#define	WORD_BIT	32	/* # of bits in a "word" or "int" */
#define	LONG_BIT	32	/* # of bits in a "long" */

#define	DBL_DIG		15	/* digits of precision of a "double" */
#define	DBL_MAX		1.7976931348623157E+308	/* max decimal value of a */
						/* "double" */
#define	DBL_MIN		2.2250738585072014E-308	/* min decimal value of a */
						/* "double" */
#define	FLT_DIG		6		/* digits of precision of a "float" */
#define	FLT_MAX		3.402823466E+38F  /* max decimal value of a "float" */
#define	FLT_MIN		1.175494351E-38F  /* min decimal value of a "float" */

#endif	/* defined(__EXTENSIONS__) || (__STDC__ - 0 == 0 && ... */

#if defined(__EXTENSIONS__) || (__STDC__ - 0 == 0 && \
	!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE))

#define	FCHR_MAX	1048576		/* max size of a file in bytes */
#define	PID_MAX		30000		/* max value for a process ID */

/*
 * POSIX 1003.1a, section 2.9.5, table 2-5 contains [NAME_MAX] and the
 * related text states:
 *
 * A definition of one of the values from Table 2-5 shall be omitted from the
 * <limits.h> on specific implementations where the corresponding value is
 * equal to or greater than the stated minimum, but where the value can vary
 * depending on the file to which it is applied. The actual value supported for
 * a specific pathname shall be provided by the pathconf() (5.7.1) function.
 *
 * This is clear that any machine supporting multiple file system types
 * and/or a network can not include this define, regardless of protection
 * by the _POSIX_SOURCE and _POSIX_C_SOURCE flags.
 *
 * #define	NAME_MAX	14
 */

#define	CHILD_MAX	25	/* max # of processes per user id */
#ifndef OPEN_MAX
#define	OPEN_MAX	64	/* max # of files a process can have open */
#endif

#define	PIPE_MAX	5120	/* max # bytes written to a pipe in a write */

#define	STD_BLK		1024	/* # bytes in a physical I/O block */
#define	UID_MAX		60002	/* max value for a user or group ID */
#define	USI_MAX		4294967295	/* max decimal value of an "unsigned" */
#define	SYSPID_MAX	1	/* max pid of system processes */

#ifndef SYS_NMLN		/* also defined in sys/utsname.h */
#define	SYS_NMLN	257	/* 4.0 size of utsname elements */
#endif

#ifndef CLK_TCK
extern long _sysconf(int);	/* System Private interface to sysconf() */
#define	CLK_TCK	_sysconf(3)	/* 3 is _SC_CLK_TCK */
#endif

#define	LOGNAME_MAX	8	/* max # of characters in a login name */
#define	TTYNAME_MAX	128	/* max # of characters in a tty name */

/*
 * Size constants for long long
 */
#define	LLONG_MIN	(-9223372036854775807LL-1LL)
#define	LLONG_MAX	9223372036854775807LL
#define	ULLONG_MAX	18446744073709551615ULL

#endif	/* defined(__EXTENSIONS__) || (__STDC__ - 0 == 0 && ... */

/*
 * POSIX.1c Note:
 * PTHREAD_STACK_MIN is also defined in <pthread.h>.
 */
#if	defined(__EXTENSIONS__) || (_POSIX_C_SOURCE >= 199506L)
#include <sys/unistd.h>
extern long _sysconf(int);	/* System Private interface to sysconf() */
#define	PTHREAD_STACK_MIN	_sysconf(_SC_THREAD_STACK_MIN)
#endif	/* defined(__EXTENSIONS__) || (_POSIX_C_SOURCE >= 199506L) */


#ifdef	__cplusplus
}
#endif

#endif	/* _LIMITS_H */