limits.h revision 1.14
11.14Sbjh21/*	$NetBSD: limits.h,v 1.14 2003/04/28 23:16:24 bjh21 Exp $ */
21.6Sderaadt
31.1Sderaadt/*
41.1Sderaadt * Copyright (c) 1988 The Regents of the University of California.
51.1Sderaadt * All rights reserved.
61.1Sderaadt *
71.1Sderaadt * Redistribution and use in source and binary forms, with or without
81.1Sderaadt * modification, are permitted provided that the following conditions
91.1Sderaadt * are met:
101.1Sderaadt * 1. Redistributions of source code must retain the above copyright
111.1Sderaadt *    notice, this list of conditions and the following disclaimer.
121.1Sderaadt * 2. Redistributions in binary form must reproduce the above copyright
131.1Sderaadt *    notice, this list of conditions and the following disclaimer in the
141.1Sderaadt *    documentation and/or other materials provided with the distribution.
151.1Sderaadt * 3. All advertising materials mentioning features or use of this software
161.1Sderaadt *    must display the following acknowledgement:
171.1Sderaadt *	This product includes software developed by the University of
181.1Sderaadt *	California, Berkeley and its contributors.
191.1Sderaadt * 4. Neither the name of the University nor the names of its contributors
201.1Sderaadt *    may be used to endorse or promote products derived from this software
211.1Sderaadt *    without specific prior written permission.
221.1Sderaadt *
231.1Sderaadt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
241.1Sderaadt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
251.1Sderaadt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
261.1Sderaadt * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
271.1Sderaadt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
281.1Sderaadt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
291.1Sderaadt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
301.1Sderaadt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
311.1Sderaadt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
321.1Sderaadt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
331.1Sderaadt * SUCH DAMAGE.
341.1Sderaadt *
351.6Sderaadt *	@(#)limits.h	8.3 (Berkeley) 1/4/94
361.1Sderaadt */
371.1Sderaadt
381.8Sperry#ifndef	_MACHINE_LIMITS_H_
391.8Sperry#define	_MACHINE_LIMITS_H_
401.8Sperry
411.14Sbjh21#include <sys/featuretest.h>
421.14Sbjh21
431.1Sderaadt#define	CHAR_BIT	8		/* number of bits in a char */
441.12Stshiozak#define	MB_LEN_MAX	32		/* no multibyte characters */
451.1Sderaadt
461.3Spk#define	SCHAR_MIN	(-0x7f-1)	/* max value for a signed char */
471.1Sderaadt#define	SCHAR_MAX	0x7f		/* min value for a signed char */
481.1Sderaadt
491.7Spk#define	UCHAR_MAX	0xffU		/* max value for an unsigned char */
501.1Sderaadt#define	CHAR_MAX	0x7f		/* max value for a char */
511.3Spk#define	CHAR_MIN	(-0x7f-1)	/* min value for a char */
521.1Sderaadt
531.7Spk#define	USHRT_MAX	0xffffU		/* max value for an unsigned short */
541.1Sderaadt#define	SHRT_MAX	0x7fff		/* max value for a short */
551.3Spk#define	SHRT_MIN	(-0x7fff-1)	/* min value for a short */
561.1Sderaadt
571.7Spk#define	UINT_MAX	0xffffffffU	/* max value for an unsigned int */
581.1Sderaadt#define	INT_MAX		0x7fffffff	/* max value for an int */
591.3Spk#define	INT_MIN		(-0x7fffffff-1)	/* min value for an int */
601.10Smrg
611.10Smrg#ifdef __arch64__
621.10Smrg#define	ULONG_MAX	0xffffffffffffffffUL	/* max value for an unsigned long */
631.10Smrg#define	LONG_MAX	0x7fffffffffffffffL	/* max value for a long */
641.10Smrg#define	LONG_MIN	(-0x7fffffffffffffffL-1)	/* min value for a long */
651.10Smrg#else
661.7Spk#define	ULONG_MAX	0xffffffffUL	/* max value for an unsigned long */
671.7Spk#define	LONG_MAX	0x7fffffffL	/* max value for a long */
681.7Spk#define	LONG_MIN	(-0x7fffffffL-1)	/* min value for a long */
691.10Smrg#endif
701.2Sderaadt
711.14Sbjh21#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
721.14Sbjh21    defined(_NETBSD_SOURCE)
731.10Smrg#define	SSIZE_MAX	LONG_MAX	/* max value for a ssize_t */
741.11Skleink
751.14Sbjh21#if defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L || \
761.14Sbjh21    defined(_NETBSD_SOURCE)
771.11Skleink#define	ULLONG_MAX	0xffffffffffffffffULL	/* max unsigned long long */
781.11Skleink#define	LLONG_MAX	0x7fffffffffffffffLL	/* max signed long long */
791.11Skleink#define	LLONG_MIN	(-0x7fffffffffffffffLL-1) /* min signed long long */
801.11Skleink#endif
811.2Sderaadt
821.14Sbjh21#if defined(_NETBSD_SOURCE)
831.10Smrg#define	SIZE_T_MAX	ULONG_MAX	/* max value for a size_t */
841.4Sderaadt
851.4Sderaadt/* GCC requires that quad constants be written as expressions. */
861.4Sderaadt#define	UQUAD_MAX	((u_quad_t)0-1)	/* max value for a uquad_t */
871.4Sderaadt					/* max value for a quad_t */
881.4Sderaadt#define	QUAD_MAX	((quad_t)(UQUAD_MAX >> 1))
891.4Sderaadt#define	QUAD_MIN	(-QUAD_MAX-1)	/* min value for a quad_t */
901.4Sderaadt
911.14Sbjh21#endif /* _NETBSD_SOURCE */
921.14Sbjh21#endif /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */
931.5Sjtc
941.14Sbjh21#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
951.10Smrg#ifdef __arch64__
961.10Smrg#define LONG_BIT	64
971.10Smrg#else
981.5Sjtc#define LONG_BIT	32
991.10Smrg#endif
1001.5Sjtc#define WORD_BIT	32
1011.5Sjtc
1021.5Sjtc#define DBL_DIG		15
1031.5Sjtc#define DBL_MAX		1.7976931348623157E+308
1041.5Sjtc#define DBL_MIN		2.2250738585072014E-308
1051.5Sjtc
1061.5Sjtc#define FLT_DIG		6
1071.5Sjtc#define FLT_MAX		3.40282347E+38F
1081.5Sjtc#define FLT_MIN		1.17549435E-38F
1091.5Sjtc#endif
1101.8Sperry
1111.10Smrg#endif	/* _MACHINE_LIMITS_H_ */
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