_limits.h revision 122940
199127Sobrien/* 299127Sobrien * Copyright (c) 1988, 1993 399127Sobrien * The Regents of the University of California. All rights reserved. 499127Sobrien * 599127Sobrien * Redistribution and use in source and binary forms, with or without 699127Sobrien * modification, are permitted provided that the following conditions 799127Sobrien * are met: 899127Sobrien * 1. Redistributions of source code must retain the above copyright 999127Sobrien * notice, this list of conditions and the following disclaimer. 1099127Sobrien * 2. Redistributions in binary form must reproduce the above copyright 1199127Sobrien * notice, this list of conditions and the following disclaimer in the 1299127Sobrien * documentation and/or other materials provided with the distribution. 1399127Sobrien * 3. All advertising materials mentioning features or use of this software 1499127Sobrien * must display the following acknowledgement: 1599127Sobrien * This product includes software developed by the University of 1699127Sobrien * California, Berkeley and its contributors. 1799127Sobrien * 4. Neither the name of the University nor the names of its contributors 1899127Sobrien * may be used to endorse or promote products derived from this software 1999127Sobrien * without specific prior written permission. 20114370Speter * 21114370Speter * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22114370Speter * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23114370Speter * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24114370Speter * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25114370Speter * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26114370Speter * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27114370Speter * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28114370Speter * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29114370Speter * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30114370Speter * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31114370Speter * SUCH DAMAGE. 32114370Speter * 3399127Sobrien * @(#)limits.h 8.3 (Berkeley) 1/4/94 34113536Sphk * $FreeBSD: head/sys/amd64/include/_limits.h 122940 2003-11-21 03:02:00Z peter $ 3599127Sobrien */ 3699127Sobrien 3799127Sobrien#ifndef _MACHINE__LIMITS_H_ 3899127Sobrien#define _MACHINE__LIMITS_H_ 3999127Sobrien 4099127Sobrien/* 4199127Sobrien * According to ANSI (section 2.2.4.2), the values below must be usable by 4299127Sobrien * #if preprocessing directives. Additionally, the expression must have the 4399127Sobrien * same type as would an expression that is an object of the corresponding 4499127Sobrien * type converted according to the integral promotions. The subtraction for 4599127Sobrien * INT_MIN, etc., is so the value is not unsigned; e.g., 0x80000000 is an 4699127Sobrien * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2). 47114370Speter * These numbers are for the default configuration of gcc. They work for 4899127Sobrien * some other compilers as well, but this should not be depended on. 4999127Sobrien */ 5099127Sobrien 5199127Sobrien#define __CHAR_BIT 8 /* number of bits in a char */ 5299127Sobrien 5399127Sobrien#define __SCHAR_MAX 0x7f /* max value for a signed char */ 5499127Sobrien#define __SCHAR_MIN (-0x7f - 1) /* min value for a signed char */ 5599127Sobrien 5699127Sobrien#define __UCHAR_MAX 0xffU /* max value for an unsigned char */ 5799127Sobrien 5899127Sobrien#define __USHRT_MAX 0xffffU /* max value for an unsigned short */ 5999127Sobrien#define __SHRT_MAX 0x7fff /* max value for a short */ 6099127Sobrien#define __SHRT_MIN (-0x7fff - 1) /* min value for a short */ 6199127Sobrien 6299127Sobrien#define __UINT_MAX 0xffffffffU /* max value for an unsigned int */ 6399127Sobrien#define __INT_MAX 0x7fffffff /* max value for an int */ 64#define __INT_MIN (-0x7fffffff - 1) /* min value for an int */ 65 66#define __ULONG_MAX 0xffffffffffffffffUL /* max for an unsigned long */ 67#define __LONG_MAX 0x7fffffffffffffffL /* max for a long */ 68#define __LONG_MIN (-0x7fffffffffffffffL - 1) /* min for a long */ 69 70 /* max value for an unsigned long long */ 71#define __ULLONG_MAX 0xffffffffffffffffULL 72#define __LLONG_MAX 0x7fffffffffffffffLL /* max value for a long long */ 73#define __LLONG_MIN (-0x7fffffffffffffffLL - 1) /* min for a long long */ 74 75#define __SSIZE_MAX __LONG_MAX /* max value for a ssize_t */ 76 77#define __SIZE_T_MAX __ULONG_MAX /* max value for a size_t */ 78 79#define __OFF_MAX __LONG_MAX /* max value for an off_t */ 80#define __OFF_MIN __LONG_MIN /* min value for an off_t */ 81 82/* Quads and longs are the same on the amd64. Ensure they stay in sync. */ 83#define __UQUAD_MAX __ULONG_MAX /* max value for a uquad_t */ 84#define __QUAD_MAX __LONG_MAX /* max value for a quad_t */ 85#define __QUAD_MIN __LONG_MIN /* min value for a quad_t */ 86 87#define __LONG_BIT 64 88#define __WORD_BIT 32 89 90#endif /* !_MACHINE__LIMITS_H_ */ 91