limits.h revision 87567
187567Sobrien/* 287567Sobrien * Copyright (c) 1988, 1993 387567Sobrien * The Regents of the University of California. All rights reserved. 487567Sobrien * 587567Sobrien * Redistribution and use in source and binary forms, with or without 687567Sobrien * modification, are permitted provided that the following conditions 787567Sobrien * are met: 887567Sobrien * 1. Redistributions of source code must retain the above copyright 987567Sobrien * notice, this list of conditions and the following disclaimer. 1087567Sobrien * 2. Redistributions in binary form must reproduce the above copyright 1187567Sobrien * notice, this list of conditions and the following disclaimer in the 1287567Sobrien * documentation and/or other materials provided with the distribution. 1387567Sobrien * 3. All advertising materials mentioning features or use of this software 1487567Sobrien * must display the following acknowledgement: 1587567Sobrien * This product includes software developed by the University of 1687567Sobrien * California, Berkeley and its contributors. 1787567Sobrien * 4. Neither the name of the University nor the names of its contributors 1887567Sobrien * may be used to endorse or promote products derived from this software 1987567Sobrien * without specific prior written permission. 2087567Sobrien * 2187567Sobrien * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2287567Sobrien * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2387567Sobrien * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2487567Sobrien * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2587567Sobrien * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2687567Sobrien * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2787567Sobrien * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2887567Sobrien * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2987567Sobrien * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3087567Sobrien * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3187567Sobrien * SUCH DAMAGE. 3287567Sobrien * 3387567Sobrien * @(#)limits.h 8.3 (Berkeley) 1/4/94 3487567Sobrien * $FreeBSD: head/sys/arm/include/limits.h 87567 2001-12-09 18:30:04Z obrien $ 3587567Sobrien */ 3687567Sobrien 3787567Sobrien#ifndef _MACHINE_LIMITS_H_ 3887567Sobrien#define _MACHINE_LIMITS_H_ 3987567Sobrien 4087567Sobrien#define CHAR_BIT 8 /* number of bits in a char */ 4187567Sobrien#define MB_LEN_MAX 6 /* Allow 31 bit UTF2 */ 4287567Sobrien 4387567Sobrien/* 4487567Sobrien * According to ANSI (section 2.2.4.2), the values below must be usable by 4587567Sobrien * #if preprocessing directives. Additionally, the expression must have the 4687567Sobrien * same type as would an expression that is an object of the corresponding 4787567Sobrien * type converted according to the integral promotions. The subtraction for 4887567Sobrien * INT_MIN, etc., is so the value is not unsigned; e.g., 0x80000000 is an 4987567Sobrien * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2). 5087567Sobrien * These numbers are for the default configuration of gcc. They work for 5187567Sobrien * some other compilers as well, but this should not be depended on. 5287567Sobrien */ 5387567Sobrien#define SCHAR_MAX 0x7f /* max value for a signed char */ 5487567Sobrien#define SCHAR_MIN (-0x7f - 1) /* min value for a signed char */ 5587567Sobrien 5687567Sobrien#define UCHAR_MAX 0xff /* max value for an unsigned char */ 5787567Sobrien 5887567Sobrien#ifdef __CHAR_UNSIGNED__ 5987567Sobrien#define CHAR_MAX UCHAR_MAX /* max value for a char */ 6087567Sobrien#define CHAR_MIN 0 /* min value for a char */ 6187567Sobrien#else 6287567Sobrien#define CHAR_MAX SCHAR_MAX /* max value for a char */ 6387567Sobrien#define CHAR_MIN SCHAR_MIN /* min value for a char */ 6487567Sobrien#endif 6587567Sobrien 6687567Sobrien#define USHRT_MAX 0xffff /* max value for an unsigned short */ 6787567Sobrien#define SHRT_MAX 0x7fff /* max value for a short */ 6887567Sobrien#define SHRT_MIN (-0x7fff - 1) /* min value for a short */ 6987567Sobrien 7087567Sobrien#define UINT_MAX 0xffffffffU /* max value for an unsigned int */ 7187567Sobrien#define INT_MAX 0x7fffffff /* max value for an int */ 7287567Sobrien#define INT_MIN (-0x7fffffff - 1) /* min value for an int */ 7387567Sobrien 7487567Sobrien/* Bad hack for gcc configured to give 64-bit longs. */ 7587567Sobrien#ifdef _LARGE_LONG 7687567Sobrien#define ULONG_MAX 0xffffffffffffffffUL 7787567Sobrien#define LONG_MAX 0x7fffffffffffffffL 7887567Sobrien#define LONG_MIN (-0x7fffffffffffffffL - 1) 7987567Sobrien#else 8087567Sobrien#define ULONG_MAX 0xffffffffUL /* max value for an unsigned long */ 8187567Sobrien#define LONG_MAX 0x7fffffffL /* max value for a long */ 8287567Sobrien#define LONG_MIN (-0x7fffffffL - 1) /* min value for a long */ 8387567Sobrien#endif 8487567Sobrien 8587567Sobrien /* max value for an unsigned long long */ 8687567Sobrien#define ULLONG_MAX 0xffffffffffffffffULL 8787567Sobrien#define LLONG_MAX 0x7fffffffffffffffLL /* max value for a long long */ 8887567Sobrien#define LLONG_MIN (-0x7fffffffffffffffLL - 1) /* min for a long long */ 8987567Sobrien 9087567Sobrien#if !defined(_ANSI_SOURCE) 9187567Sobrien#define SSIZE_MAX INT_MAX /* max value for a ssize_t */ 9287567Sobrien 9387567Sobrien#if !defined(_POSIX_SOURCE) 9487567Sobrien#define SIZE_T_MAX UINT_MAX /* max value for a size_t */ 9587567Sobrien 9687567Sobrien#define OFF_MAX LLONG_MAX /* max value for a off_t */ 9787567Sobrien#define OFF_MIN LLONG_MIN /* min value for a off_t */ 9887567Sobrien 9987567Sobrien/* Quads and long longs are the same size. Ensure they stay in sync. */ 10087567Sobrien#define UQUAD_MAX ULLONG_MAX /* max value for a uquad_t */ 10187567Sobrien#define QUAD_MAX LLONG_MAX /* max value for a quad_t */ 10287567Sobrien#define QUAD_MIN LLONG_MIN /* min value for a quad_t */ 10387567Sobrien 10487567Sobrien#if !defined(__cplusplus) || defined(__STDC_LIMIT_MACROS) 10587567Sobrien/* 10687567Sobrien * ISO/IEC 9899:1999 10787567Sobrien * 7.18.2.1 Limits of exact-width integer types 10887567Sobrien */ 10987567Sobrien/* Minimum values of exact-width signed integer types. */ 11087567Sobrien#define INT8_MIN (-0x7f-1) 11187567Sobrien#define INT16_MIN (-0x7fff-1) 11287567Sobrien#define INT32_MIN (-0x7fffffff-1) 11387567Sobrien#define INT64_MIN (-0x7fffffffffffffffLL-1) 11487567Sobrien 11587567Sobrien/* Maximum values of exact-width signed integer types. */ 11687567Sobrien#define INT8_MAX 0x7f 11787567Sobrien#define INT16_MAX 0x7fff 11887567Sobrien#define INT32_MAX 0x7fffffff 11987567Sobrien#define INT64_MAX 0x7fffffffffffffffLL 12087567Sobrien 12187567Sobrien/* Maximum values of exact-width unsigned integer types. */ 12287567Sobrien#define UINT8_MAX 0xff 12387567Sobrien#define UINT16_MAX 0xffff 12487567Sobrien#define UINT32_MAX 0xffffffffU 12587567Sobrien#define UINT64_MAX 0xffffffffffffffffULL 12687567Sobrien 12787567Sobrien/* 12887567Sobrien * ISO/IEC 9899:1999 12987567Sobrien * 7.18.2.2 Limits of minimum-width integer types 13087567Sobrien */ 13187567Sobrien/* Minimum values of minimum-width signed integer types. */ 13287567Sobrien#define INT_LEAST8_MIN SCHAR_MIN 13387567Sobrien#define INT_LEAST16_MIN SHRT_MIN 13487567Sobrien#define INT_LEAST32_MIN INT_MIN 13587567Sobrien#define INT_LEAST64_MIN LLONG_MIN 13687567Sobrien 13787567Sobrien/* Maximum values of minimum-width signed integer types. */ 13887567Sobrien#define INT_LEAST8_MAX SCHAR_MAX 13987567Sobrien#define INT_LEAST16_MAX SHRT_MAX 14087567Sobrien#define INT_LEAST32_MAX INT_MAX 14187567Sobrien#define INT_LEAST64_MAX LLONG_MAX 14287567Sobrien 14387567Sobrien/* Maximum values of minimum-width unsigned integer types. */ 14487567Sobrien#define UINT_LEAST8_MAX UCHAR_MAX 14587567Sobrien#define UINT_LEAST16_MAX USHRT_MAX 14687567Sobrien#define UINT_LEAST32_MAX UINT_MAX 14787567Sobrien#define UINT_LEAST64_MAX ULLONG_MAX 14887567Sobrien 14987567Sobrien/* 15087567Sobrien * ISO/IEC 9899:1999 15187567Sobrien * 7.18.2.3 Limits of fastest minimum-width integer types 15287567Sobrien */ 15387567Sobrien/* Minimum values of fastest minimum-width signed integer types. */ 15487567Sobrien#define INT_FAST8_MIN INT_MIN 15587567Sobrien#define INT_FAST16_MIN INT_MIN 15687567Sobrien#define INT_FAST32_MIN INT_MIN 15787567Sobrien#define INT_FAST64_MIN LLONG_MIN 15887567Sobrien 15987567Sobrien/* Maximum values of fastest minimum-width signed integer types. */ 16087567Sobrien#define INT_FAST8_MAX INT_MAX 16187567Sobrien#define INT_FAST16_MAX INT_MAX 16287567Sobrien#define INT_FAST32_MAX INT_MAX 16387567Sobrien#define INT_FAST64_MAX LLONG_MAX 16487567Sobrien 16587567Sobrien/* Maximum values of fastest minimum-width unsigned integer types. */ 16687567Sobrien#define UINT_FAST8_MAX UINT_MAX 16787567Sobrien#define UINT_FAST16_MAX UINT_MAX 16887567Sobrien#define UINT_FAST32_MAX UINT_MAX 16987567Sobrien#define UINT_FAST64_MAX ULLONG_MAX 17087567Sobrien 17187567Sobrien/* 17287567Sobrien * ISO/IEC 9899:1999 17387567Sobrien * 7.18.2.4 Limits of integer types capable of holding object pointers 17487567Sobrien */ 17587567Sobrien#define INTPTR_MIN INT_MIN 17687567Sobrien#define INTPTR_MAX INT_MAX 17787567Sobrien#define UINTPTR_MAX UINT_MAX 17887567Sobrien 17987567Sobrien/* 18087567Sobrien * ISO/IEC 9899:1999 18187567Sobrien * 7.18.2.5 Limits of greatest-width integer types 18287567Sobrien */ 18387567Sobrien#define INTMAX_MIN LLONG_MIN 18487567Sobrien#define INTMAX_MAX LLONG_MAX 18587567Sobrien#define UINTMAX_MAX ULLONG_MAX 18687567Sobrien 18787567Sobrien/* 18887567Sobrien * ISO/IEC 9899:1999 18987567Sobrien * 7.18.3 Limits of other integer types 19087567Sobrien */ 19187567Sobrien/* Limits of ptrdiff_t. */ 19287567Sobrien#define PTRDIFF_MIN INT_MIN 19387567Sobrien#define PTRDIFF_MAX INT_MAX 19487567Sobrien 19587567Sobrien/* Limits of sig_atomic_t. */ 19687567Sobrien#define SIG_ATOMIC_MIN INT_MIN 19787567Sobrien#define SIG_ATOMIC_MAX INT_MAX 19887567Sobrien 19987567Sobrien/* Limit of size_t. */ 20087567Sobrien#define SIZE_MAX UINT_MAX 20187567Sobrien 20287567Sobrien#ifndef WCHAR_MIN /* Also possibly defined in <wchar.h> */ 20387567Sobrien/* Limits of wchar_t. */ 20487567Sobrien#define WCHAR_MIN INT_MIN 20587567Sobrien#define WCHAR_MAX INT_MAX 20687567Sobrien 20787567Sobrien/* Limits of wint_t. */ 20887567Sobrien#define WINT_MIN INT_MIN 20987567Sobrien#define WINT_MAX INT_MAX 21087567Sobrien#endif 21187567Sobrien#endif /* !defined(__cplusplus) || defined(__STDC_LIMIT_MACROS) */ 21287567Sobrien#endif /* !_POSIX_SOURCE */ 21387567Sobrien#endif /* !_ANSI_SOURCE */ 21487567Sobrien 21587567Sobrien#endif /* !_MACHINE_LIMITS_H_ */ 216