_limits.h revision 331722
1/*- 2 * Copyright (c) 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)limits.h 8.3 (Berkeley) 1/4/94 30 * $FreeBSD: stable/11/sys/x86/include/_limits.h 331722 2018-03-29 02:50:57Z eadler $ 31 */ 32 33#ifndef _MACHINE__LIMITS_H_ 34#define _MACHINE__LIMITS_H_ 35 36/* 37 * According to ANSI (section 2.2.4.2), the values below must be usable by 38 * #if preprocessing directives. Additionally, the expression must have the 39 * same type as would an expression that is an object of the corresponding 40 * type converted according to the integral promotions. The subtraction for 41 * INT_MIN, etc., is so the value is not unsigned; e.g., 0x80000000 is an 42 * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2). 43 */ 44 45#define __CHAR_BIT 8 /* number of bits in a char */ 46 47#define __SCHAR_MAX 0x7f /* max value for a signed char */ 48#define __SCHAR_MIN (-0x7f - 1) /* min value for a signed char */ 49 50#define __UCHAR_MAX 0xff /* max value for an unsigned char */ 51 52#define __USHRT_MAX 0xffff /* max value for an unsigned short */ 53#define __SHRT_MAX 0x7fff /* max value for a short */ 54#define __SHRT_MIN (-0x7fff - 1) /* min value for a short */ 55 56#define __UINT_MAX 0xffffffff /* max value for an unsigned int */ 57#define __INT_MAX 0x7fffffff /* max value for an int */ 58#define __INT_MIN (-0x7fffffff - 1) /* min value for an int */ 59 60#ifdef __LP64__ 61#define __ULONG_MAX 0xffffffffffffffff /* max for an unsigned long */ 62#define __LONG_MAX 0x7fffffffffffffff /* max for a long */ 63#define __LONG_MIN (-0x7fffffffffffffff - 1) /* min for a long */ 64#else 65#define __ULONG_MAX 0xffffffffUL 66#define __LONG_MAX 0x7fffffffL 67#define __LONG_MIN (-0x7fffffffL - 1) 68#endif 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#ifdef __LP64__ 76#define __SSIZE_MAX __LONG_MAX /* max value for a ssize_t */ 77#define __SIZE_T_MAX __ULONG_MAX /* max value for a size_t */ 78#define __OFF_MAX __LONG_MAX /* max value for an off_t */ 79#define __OFF_MIN __LONG_MIN /* min value for an off_t */ 80/* Quads and longs are the same on the amd64. Ensure they stay in sync. */ 81#define __UQUAD_MAX __ULONG_MAX /* max value for a uquad_t */ 82#define __QUAD_MAX __LONG_MAX /* max value for a quad_t */ 83#define __QUAD_MIN __LONG_MIN /* min value for a quad_t */ 84#define __LONG_BIT 64 85#else 86#define __SSIZE_MAX __INT_MAX 87#define __SIZE_T_MAX __UINT_MAX 88#define __OFF_MAX __LLONG_MAX 89#define __OFF_MIN __LLONG_MIN 90#define __UQUAD_MAX __ULLONG_MAX 91#define __QUAD_MAX __LLONG_MAX 92#define __QUAD_MIN __LLONG_MIN 93#define __LONG_BIT 32 94#endif 95 96#define __WORD_BIT 32 97 98/* Minimum signal stack size. */ 99#define __MINSIGSTKSZ (512 * 4) 100 101#endif /* !_MACHINE__LIMITS_H_ */ 102