limits.h revision 1.14
1/* $NetBSD: limits.h,v 1.14 2003/04/28 23:16:24 bjh21 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)limits.h 8.3 (Berkeley) 1/4/94 36 */ 37 38#ifndef _MACHINE_LIMITS_H_ 39#define _MACHINE_LIMITS_H_ 40 41#include <sys/featuretest.h> 42 43#define CHAR_BIT 8 /* number of bits in a char */ 44#define MB_LEN_MAX 32 /* no multibyte characters */ 45 46#define SCHAR_MIN (-0x7f-1) /* max value for a signed char */ 47#define SCHAR_MAX 0x7f /* min value for a signed char */ 48 49#define UCHAR_MAX 0xffU /* max value for an unsigned char */ 50#define CHAR_MAX 0x7f /* max value for a char */ 51#define CHAR_MIN (-0x7f-1) /* min value for a char */ 52 53#define USHRT_MAX 0xffffU /* max value for an unsigned short */ 54#define SHRT_MAX 0x7fff /* max value for a short */ 55#define SHRT_MIN (-0x7fff-1) /* min value for a short */ 56 57#define UINT_MAX 0xffffffffU /* max value for an unsigned int */ 58#define INT_MAX 0x7fffffff /* max value for an int */ 59#define INT_MIN (-0x7fffffff-1) /* min value for an int */ 60 61#ifdef __arch64__ 62#define ULONG_MAX 0xffffffffffffffffUL /* max value for an unsigned long */ 63#define LONG_MAX 0x7fffffffffffffffL /* max value for a long */ 64#define LONG_MIN (-0x7fffffffffffffffL-1) /* min value for a long */ 65#else 66#define ULONG_MAX 0xffffffffUL /* max value for an unsigned long */ 67#define LONG_MAX 0x7fffffffL /* max value for a long */ 68#define LONG_MIN (-0x7fffffffL-1) /* min value for a long */ 69#endif 70 71#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \ 72 defined(_NETBSD_SOURCE) 73#define SSIZE_MAX LONG_MAX /* max value for a ssize_t */ 74 75#if defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L || \ 76 defined(_NETBSD_SOURCE) 77#define ULLONG_MAX 0xffffffffffffffffULL /* max unsigned long long */ 78#define LLONG_MAX 0x7fffffffffffffffLL /* max signed long long */ 79#define LLONG_MIN (-0x7fffffffffffffffLL-1) /* min signed long long */ 80#endif 81 82#if defined(_NETBSD_SOURCE) 83#define SIZE_T_MAX ULONG_MAX /* max value for a size_t */ 84 85/* GCC requires that quad constants be written as expressions. */ 86#define UQUAD_MAX ((u_quad_t)0-1) /* max value for a uquad_t */ 87 /* max value for a quad_t */ 88#define QUAD_MAX ((quad_t)(UQUAD_MAX >> 1)) 89#define QUAD_MIN (-QUAD_MAX-1) /* min value for a quad_t */ 90 91#endif /* _NETBSD_SOURCE */ 92#endif /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */ 93 94#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE) 95#ifdef __arch64__ 96#define LONG_BIT 64 97#else 98#define LONG_BIT 32 99#endif 100#define WORD_BIT 32 101 102#define DBL_DIG 15 103#define DBL_MAX 1.7976931348623157E+308 104#define DBL_MIN 2.2250738585072014E-308 105 106#define FLT_DIG 6 107#define FLT_MAX 3.40282347E+38F 108#define FLT_MIN 1.17549435E-38F 109#endif 110 111#endif /* _MACHINE_LIMITS_H_ */ 112