limits.h revision 1.16
1/* $NetBSD: limits.h,v 1.16 2005/12/11 12:19:05 christos Exp $ */ 2 3/* 4 * Copyright (c) 1988 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)limits.h 8.3 (Berkeley) 1/4/94 32 */ 33 34#ifndef _MACHINE_LIMITS_H_ 35#define _MACHINE_LIMITS_H_ 36 37#include <sys/featuretest.h> 38 39#define CHAR_BIT 8 /* number of bits in a char */ 40#define MB_LEN_MAX 32 /* no multibyte characters */ 41 42#define SCHAR_MIN (-0x7f-1) /* max value for a signed char */ 43#define SCHAR_MAX 0x7f /* min value for a signed char */ 44 45#define UCHAR_MAX 0xffU /* max value for an unsigned char */ 46#define CHAR_MAX 0x7f /* max value for a char */ 47#define CHAR_MIN (-0x7f-1) /* min value for a char */ 48 49#define USHRT_MAX 0xffffU /* max value for an unsigned short */ 50#define SHRT_MAX 0x7fff /* max value for a short */ 51#define SHRT_MIN (-0x7fff-1) /* min value for a short */ 52 53#define UINT_MAX 0xffffffffU /* max value for an unsigned int */ 54#define INT_MAX 0x7fffffff /* max value for an int */ 55#define INT_MIN (-0x7fffffff-1) /* min value for an int */ 56 57#ifdef __arch64__ 58#define ULONG_MAX 0xffffffffffffffffUL /* max value for an unsigned long */ 59#define LONG_MAX 0x7fffffffffffffffL /* max value for a long */ 60#define LONG_MIN (-0x7fffffffffffffffL-1) /* min value for a long */ 61#else 62#define ULONG_MAX 0xffffffffUL /* max value for an unsigned long */ 63#define LONG_MAX 0x7fffffffL /* max value for a long */ 64#define LONG_MIN (-0x7fffffffL-1) /* min value for a long */ 65#endif 66 67#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \ 68 defined(_NETBSD_SOURCE) 69#define SSIZE_MAX LONG_MAX /* max value for a ssize_t */ 70 71#if defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L || \ 72 defined(_NETBSD_SOURCE) 73#define ULLONG_MAX 0xffffffffffffffffULL /* max unsigned long long */ 74#define LLONG_MAX 0x7fffffffffffffffLL /* max signed long long */ 75#define LLONG_MIN (-0x7fffffffffffffffLL-1) /* min signed long long */ 76#endif 77 78#if defined(_NETBSD_SOURCE) 79#define SIZE_T_MAX ULONG_MAX /* max value for a size_t */ 80 81/* GCC requires that quad constants be written as expressions. */ 82#define UQUAD_MAX ((u_quad_t)0-1) /* max value for a uquad_t */ 83 /* max value for a quad_t */ 84#define QUAD_MAX ((quad_t)(UQUAD_MAX >> 1)) 85#define QUAD_MIN (-QUAD_MAX-1) /* min value for a quad_t */ 86 87#endif /* _NETBSD_SOURCE */ 88#endif /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */ 89 90#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE) 91#ifdef __arch64__ 92#define LONG_BIT 64 93#else 94#define LONG_BIT 32 95#endif 96#define WORD_BIT 32 97 98#define DBL_DIG 15 99#define DBL_MAX 1.7976931348623157E+308 100#define DBL_MIN 2.2250738585072014E-308 101 102#define FLT_DIG 6 103#define FLT_MAX 3.40282347E+38F 104#define FLT_MIN 1.17549435E-38F 105#endif 106 107#endif /* _MACHINE_LIMITS_H_ */ 108