limits.h revision 1.15
11.15Sagc/*	$NetBSD: limits.h,v 1.15 2003/08/07 16:29:40 agc 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.
151.15Sagc * 3. Neither the name of the University nor the names of its contributors
161.1Sderaadt *    may be used to endorse or promote products derived from this software
171.1Sderaadt *    without specific prior written permission.
181.1Sderaadt *
191.1Sderaadt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
201.1Sderaadt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
211.1Sderaadt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
221.1Sderaadt * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
231.1Sderaadt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
241.1Sderaadt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
251.1Sderaadt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
261.1Sderaadt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
271.1Sderaadt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
281.1Sderaadt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
291.1Sderaadt * SUCH DAMAGE.
301.1Sderaadt *
311.6Sderaadt *	@(#)limits.h	8.3 (Berkeley) 1/4/94
321.1Sderaadt */
331.1Sderaadt
341.8Sperry#ifndef	_MACHINE_LIMITS_H_
351.8Sperry#define	_MACHINE_LIMITS_H_
361.8Sperry
371.14Sbjh21#include <sys/featuretest.h>
381.14Sbjh21
391.1Sderaadt#define	CHAR_BIT	8		/* number of bits in a char */
401.12Stshiozak#define	MB_LEN_MAX	32		/* no multibyte characters */
411.1Sderaadt
421.3Spk#define	SCHAR_MIN	(-0x7f-1)	/* max value for a signed char */
431.1Sderaadt#define	SCHAR_MAX	0x7f		/* min value for a signed char */
441.1Sderaadt
451.7Spk#define	UCHAR_MAX	0xffU		/* max value for an unsigned char */
461.1Sderaadt#define	CHAR_MAX	0x7f		/* max value for a char */
471.3Spk#define	CHAR_MIN	(-0x7f-1)	/* min value for a char */
481.1Sderaadt
491.7Spk#define	USHRT_MAX	0xffffU		/* max value for an unsigned short */
501.1Sderaadt#define	SHRT_MAX	0x7fff		/* max value for a short */
511.3Spk#define	SHRT_MIN	(-0x7fff-1)	/* min value for a short */
521.1Sderaadt
531.7Spk#define	UINT_MAX	0xffffffffU	/* max value for an unsigned int */
541.1Sderaadt#define	INT_MAX		0x7fffffff	/* max value for an int */
551.3Spk#define	INT_MIN		(-0x7fffffff-1)	/* min value for an int */
561.10Smrg
571.10Smrg#ifdef __arch64__
581.10Smrg#define	ULONG_MAX	0xffffffffffffffffUL	/* max value for an unsigned long */
591.10Smrg#define	LONG_MAX	0x7fffffffffffffffL	/* max value for a long */
601.10Smrg#define	LONG_MIN	(-0x7fffffffffffffffL-1)	/* min value for a long */
611.10Smrg#else
621.7Spk#define	ULONG_MAX	0xffffffffUL	/* max value for an unsigned long */
631.7Spk#define	LONG_MAX	0x7fffffffL	/* max value for a long */
641.7Spk#define	LONG_MIN	(-0x7fffffffL-1)	/* min value for a long */
651.10Smrg#endif
661.2Sderaadt
671.14Sbjh21#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
681.14Sbjh21    defined(_NETBSD_SOURCE)
691.10Smrg#define	SSIZE_MAX	LONG_MAX	/* max value for a ssize_t */
701.11Skleink
711.14Sbjh21#if defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L || \
721.14Sbjh21    defined(_NETBSD_SOURCE)
731.11Skleink#define	ULLONG_MAX	0xffffffffffffffffULL	/* max unsigned long long */
741.11Skleink#define	LLONG_MAX	0x7fffffffffffffffLL	/* max signed long long */
751.11Skleink#define	LLONG_MIN	(-0x7fffffffffffffffLL-1) /* min signed long long */
761.11Skleink#endif
771.2Sderaadt
781.14Sbjh21#if defined(_NETBSD_SOURCE)
791.10Smrg#define	SIZE_T_MAX	ULONG_MAX	/* max value for a size_t */
801.4Sderaadt
811.4Sderaadt/* GCC requires that quad constants be written as expressions. */
821.4Sderaadt#define	UQUAD_MAX	((u_quad_t)0-1)	/* max value for a uquad_t */
831.4Sderaadt					/* max value for a quad_t */
841.4Sderaadt#define	QUAD_MAX	((quad_t)(UQUAD_MAX >> 1))
851.4Sderaadt#define	QUAD_MIN	(-QUAD_MAX-1)	/* min value for a quad_t */
861.4Sderaadt
871.14Sbjh21#endif /* _NETBSD_SOURCE */
881.14Sbjh21#endif /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */
891.5Sjtc
901.14Sbjh21#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
911.10Smrg#ifdef __arch64__
921.10Smrg#define LONG_BIT	64
931.10Smrg#else
941.5Sjtc#define LONG_BIT	32
951.10Smrg#endif
961.5Sjtc#define WORD_BIT	32
971.5Sjtc
981.5Sjtc#define DBL_DIG		15
991.5Sjtc#define DBL_MAX		1.7976931348623157E+308
1001.5Sjtc#define DBL_MIN		2.2250738585072014E-308
1011.5Sjtc
1021.5Sjtc#define FLT_DIG		6
1031.5Sjtc#define FLT_MAX		3.40282347E+38F
1041.5Sjtc#define FLT_MIN		1.17549435E-38F
1051.5Sjtc#endif
1061.8Sperry
1071.10Smrg#endif	/* _MACHINE_LIMITS_H_ */
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