_limits.h revision 139790
1139790Simp/*- 21549Srgrimes * Copyright (c) 1988, 1993 31549Srgrimes * The Regents of the University of California. All rights reserved. 44Srgrimes * 54Srgrimes * Redistribution and use in source and binary forms, with or without 64Srgrimes * modification, are permitted provided that the following conditions 74Srgrimes * are met: 84Srgrimes * 1. Redistributions of source code must retain the above copyright 94Srgrimes * notice, this list of conditions and the following disclaimer. 104Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 114Srgrimes * notice, this list of conditions and the following disclaimer in the 124Srgrimes * documentation and/or other materials provided with the distribution. 134Srgrimes * 4. Neither the name of the University nor the names of its contributors 144Srgrimes * may be used to endorse or promote products derived from this software 154Srgrimes * without specific prior written permission. 164Srgrimes * 174Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 184Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 194Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 204Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 214Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 224Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 234Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 244Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 254Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 264Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 274Srgrimes * SUCH DAMAGE. 284Srgrimes * 291549Srgrimes * @(#)limits.h 8.3 (Berkeley) 1/4/94 3050477Speter * $FreeBSD: head/sys/i386/include/_limits.h 139790 2005-01-06 22:18:23Z imp $ 314Srgrimes */ 324Srgrimes 33113941Skan#ifndef _MACHINE__LIMITS_H_ 34113941Skan#define _MACHINE__LIMITS_H_ 35719Swollman 36114678Skan/* 37114678Skan * According to ANSI (section 2.2.4.2), the values below must be usable by 38114678Skan * #if preprocessing directives. Additionally, the expression must have the 39114678Skan * same type as would an expression that is an object of the corresponding 40114678Skan * type converted according to the integral promotions. The subtraction for 41114678Skan * INT_MIN, etc., is so the value is not unsigned; e.g., 0x80000000 is an 42114678Skan * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2). 43114678Skan * These numbers are for the default configuration of gcc. They work for 44114678Skan * some other compilers as well, but this should not be depended on. 45114678Skan */ 46114678Skan 47115164Skan#define __CHAR_BIT 8 /* number of bits in a char */ 48115164Skan 49113941Skan#define __SCHAR_MAX 0x7f /* max value for a signed char */ 50113941Skan#define __SCHAR_MIN (-0x7f - 1) /* min value for a signed char */ 514Srgrimes 52113941Skan#define __UCHAR_MAX 0xff /* max value for an unsigned char */ 531549Srgrimes 54113941Skan#define __USHRT_MAX 0xffff /* max value for an unsigned short */ 55113941Skan#define __SHRT_MAX 0x7fff /* max value for a short */ 56113941Skan#define __SHRT_MIN (-0x7fff - 1) /* min value for a short */ 5747347Sache 58113941Skan#define __UINT_MAX 0xffffffffU /* max value for an unsigned int */ 59113941Skan#define __INT_MAX 0x7fffffff /* max value for an int */ 60113941Skan#define __INT_MIN (-0x7fffffff - 1) /* min value for an int */ 611549Srgrimes 6267487Sobrien/* Bad hack for gcc configured to give 64-bit longs. */ 6367487Sobrien#ifdef _LARGE_LONG 64113941Skan#define __ULONG_MAX 0xffffffffffffffffUL 65113941Skan#define __LONG_MAX 0x7fffffffffffffffL 66113941Skan#define __LONG_MIN (-0x7fffffffffffffffL - 1) 6767487Sobrien#else 68113941Skan#define __ULONG_MAX 0xffffffffUL /* max value for an unsigned long */ 69113941Skan#define __LONG_MAX 0x7fffffffL /* max value for a long */ 70113941Skan#define __LONG_MIN (-0x7fffffffL - 1) /* min value for a long */ 7167487Sobrien#endif 72880Salm 7367487Sobrien /* max value for an unsigned long long */ 74113941Skan#define __ULLONG_MAX 0xffffffffffffffffULL 75113941Skan#define __LLONG_MAX 0x7fffffffffffffffLL /* max value for a long long */ 76113941Skan#define __LLONG_MIN (-0x7fffffffffffffffLL - 1) /* min for a long long */ 7767487Sobrien 78113941Skan#define __SSIZE_MAX __INT_MAX /* max value for a ssize_t */ 79880Salm 80113941Skan#define __SIZE_T_MAX __UINT_MAX /* max value for a size_t */ 811549Srgrimes 82113941Skan#define __OFF_MAX __LLONG_MAX /* max value for an off_t */ 83113941Skan#define __OFF_MIN __LLONG_MIN /* min value for an off_t */ 8481718Sache 8567487Sobrien/* Quads and long longs are the same size. Ensure they stay in sync. */ 86113941Skan#define __UQUAD_MAX __ULLONG_MAX /* max value for a uquad_t */ 87113941Skan#define __QUAD_MAX __LLONG_MAX /* max value for a quad_t */ 88113941Skan#define __QUAD_MIN __LLONG_MIN /* min value for a quad_t */ 891549Srgrimes 90113941Skan#ifdef _LARGE_LONG 91113941Skan#define __LONG_BIT 64 92113941Skan#else 93113941Skan#define __LONG_BIT 32 94113941Skan#endif 95113941Skan#define __WORD_BIT 32 96113941Skan 97113941Skan#endif /* !_MACHINE__LIMITS_H_ */ 98