limits.h revision 1.1
11.1Sfredette/*	$NetBSD: limits.h,v 1.1 2002/06/05 01:04:22 fredette Exp $	*/
21.1Sfredette
31.1Sfredette/*	$OpenBSD: limits.h,v 1.2 2000/07/31 20:06:02 millert Exp $	*/
41.1Sfredette
51.1Sfredette/*
61.1Sfredette * Copyright (c) 1992-1994, The University of Utah and
71.1Sfredette * the Computer Systems Laboratory at the University of Utah (CSL).
81.1Sfredette * All rights reserved.
91.1Sfredette *
101.1Sfredette * Permission to use, copy, modify and distribute this software is hereby
111.1Sfredette * granted provided that (1) source code retains these copyright, permission,
121.1Sfredette * and disclaimer notices, and (2) redistributions including binaries
131.1Sfredette * reproduce the notices in supporting documentation, and (3) all advertising
141.1Sfredette * materials mentioning features or use of this software display the following
151.1Sfredette * acknowledgement: ``This product includes software developed by the
161.1Sfredette * Computer Systems Laboratory at the University of Utah.''
171.1Sfredette *
181.1Sfredette * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
191.1Sfredette * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
201.1Sfredette * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
211.1Sfredette *
221.1Sfredette * CSL requests users of this software to return to csl-dist@cs.utah.edu any
231.1Sfredette * improvements that they make and grant CSL redistribution rights.
241.1Sfredette *
251.1Sfredette * 	Utah $Hdr: limits.h 1.6 94/12/16$
261.1Sfredette */
271.1Sfredette
281.1Sfredette/*
291.1Sfredette * Copyright (c) 1988, 1993
301.1Sfredette *	The Regents of the University of California.  All rights reserved.
311.1Sfredette *
321.1Sfredette * Redistribution and use in source and binary forms, with or without
331.1Sfredette * modification, are permitted provided that the following conditions
341.1Sfredette * are met:
351.1Sfredette * 1. Redistributions of source code must retain the above copyright
361.1Sfredette *    notice, this list of conditions and the following disclaimer.
371.1Sfredette * 2. Redistributions in binary form must reproduce the above copyright
381.1Sfredette *    notice, this list of conditions and the following disclaimer in the
391.1Sfredette *    documentation and/or other materials provided with the distribution.
401.1Sfredette * 3. All advertising materials mentioning features or use of this software
411.1Sfredette *    must display the following acknowledgement:
421.1Sfredette *	This product includes software developed by the University of
431.1Sfredette *	California, Berkeley and its contributors.
441.1Sfredette * 4. Neither the name of the University nor the names of its contributors
451.1Sfredette *    may be used to endorse or promote products derived from this software
461.1Sfredette *    without specific prior written permission.
471.1Sfredette *
481.1Sfredette * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
491.1Sfredette * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
501.1Sfredette * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
511.1Sfredette * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
521.1Sfredette * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
531.1Sfredette * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
541.1Sfredette * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
551.1Sfredette * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
561.1Sfredette * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
571.1Sfredette * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
581.1Sfredette * SUCH DAMAGE.
591.1Sfredette *
601.1Sfredette *	@(#)limits.h	8.3 (Berkeley) 1/4/94
611.1Sfredette */
621.1Sfredette
631.1Sfredette#define	CHAR_BIT	8		/* number of bits in a char */
641.1Sfredette#define	MB_LEN_MAX	6		/* Allow 31 bit UTF2 */
651.1Sfredette
661.1Sfredette
671.1Sfredette#ifdef _KERNEL
681.1Sfredette#define	CLK_TCK		60		/* ticks per second */
691.1Sfredette#endif
701.1Sfredette
711.1Sfredette/*
721.1Sfredette * According to ANSI (section 2.2.4.2), the values below must be usable by
731.1Sfredette * #if preprocessing directives.  Additionally, the expression must have the
741.1Sfredette * same type as would an expression that is an object of the corresponding
751.1Sfredette * type converted according to the integral promotions.  The subtraction for
761.1Sfredette * INT_MIN and LONG_MIN is so the value is not unsigned; 2147483648 is an
771.1Sfredette * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2).
781.1Sfredette * These numbers work for pcc as well.  The UINT_MAX and ULONG_MAX values
791.1Sfredette * are written as hex so that GCC will be quiet about large integer constants.
801.1Sfredette */
811.1Sfredette#define	SCHAR_MAX	127		/* min value for a signed char */
821.1Sfredette#define	SCHAR_MIN	(-128)		/* max value for a signed char */
831.1Sfredette
841.1Sfredette#define	UCHAR_MAX	255		/* max value for an unsigned char */
851.1Sfredette#define	CHAR_MAX	127		/* max value for a char */
861.1Sfredette#define	CHAR_MIN	(-128)		/* min value for a char */
871.1Sfredette
881.1Sfredette#define	USHRT_MAX	65535		/* max value for an unsigned short */
891.1Sfredette#define	SHRT_MAX	32767		/* max value for a short */
901.1Sfredette#define	SHRT_MIN	(-32768)	/* min value for a short */
911.1Sfredette
921.1Sfredette#define	UINT_MAX	0xffffffff	/* max value for an unsigned int */
931.1Sfredette#define	INT_MAX		2147483647	/* max value for an int */
941.1Sfredette#define	INT_MIN		(-2147483647-1)	/* min value for an int */
951.1Sfredette
961.1Sfredette#define	ULONG_MAX	0xffffffffUL	/* max value for an unsigned long */
971.1Sfredette#define	LONG_MAX	2147483647L	/* max value for a long */
981.1Sfredette#define	LONG_MIN	(-2147483647-1)	/* min value for a long */
991.1Sfredette
1001.1Sfredette#if !defined(_ANSI_SOURCE)
1011.1Sfredette#define	SSIZE_MAX	INT_MAX		/* max value for a ssize_t */
1021.1Sfredette
1031.1Sfredette#if !defined(_POSIX_SOURCE)
1041.1Sfredette#define	SIZE_T_MAX	UINT_MAX	/* max value for a size_t */
1051.1Sfredette
1061.1Sfredette/* GCC requires that quad constants be written as expressions. */
1071.1Sfredette#define	UQUAD_MAX	((u_quad_t)0-1)	/* max value for a uquad_t */
1081.1Sfredette					/* max value for a quad_t */
1091.1Sfredette#define	QUAD_MAX	((quad_t)(UQUAD_MAX >> 1))
1101.1Sfredette#define	QUAD_MIN	(-QUAD_MAX-1)	/* min value for a quad_t */
1111.1Sfredette#define ULLONG_MAX	(UQUAD_MAX)	/* max value for unsigned long long */
1121.1Sfredette#define LLONG_MAX	(QUAD_MAX)	/* max value for a signed long long */
1131.1Sfredette#define LLONG_MIN	(QUAD_MIN)	/* min value for a signed long long */
1141.1Sfredette
1151.1Sfredette#endif /* !_POSIX_SOURCE */
1161.1Sfredette
1171.1Sfredette#endif /* !_ANSI_SOURCE */
1181.1Sfredette
1191.1Sfredette#if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) || \
1201.1Sfredette    defined(_XOPEN_SOURCE)
1211.1Sfredette#define LONG_BIT	32
1221.1Sfredette#define WORD_BIT	32
1231.1Sfredette
1241.1Sfredette#define DBL_DIG		15
1251.1Sfredette#define DBL_MAX		1.7976931348623157E+308
1261.1Sfredette#define DBL_MIN		2.2250738585072014E-308
1271.1Sfredette
1281.1Sfredette#define FLT_DIG         6
1291.1Sfredette#define FLT_MAX		3.40282347E+38F
1301.1Sfredette#define FLT_MIN		1.17549435E-38F
1311.1Sfredette#endif
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