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 * 3. 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: src/sys/i386/include/limits.h,v 1.14.2.2 2000/11/05 09:21:42 obrien Exp $ 31 */ 32 33 #ifndef _CPU_LIMITS_H_ 34 #define _CPU_LIMITS_H_ 35 36 #include <sys/cdefs.h> 37 38 #define CHAR_BIT 8 /* number of bits in a char */ 39 #define MB_LEN_MAX 6 /* Allow 31 bit UTF2 */ 40 41 /* 42 * According to ANSI (section 2.2.4.2), the values below must be usable by 43 * #if preprocessing directives. Additionally, the expression must have the 44 * same type as would an expression that is an object of the corresponding 45 * type converted according to the integral promotions. The subtraction for 46 * INT_MIN, etc., is so the value is not unsigned; e.g., 0x80000000 is an 47 * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2). 48 * These numbers are for the default configuration of gcc. They work for 49 * some other compilers as well, but this should not be depended on. 50 */ 51 #define SCHAR_MAX 0x7f /* max value for a signed char */ 52 #define SCHAR_MIN (-0x7f - 1) /* min value for a signed char */ 53 54 #define UCHAR_MAX 0xff /* max value for an unsigned char */ 55 56 #ifdef __CHAR_UNSIGNED__ 57 #define CHAR_MAX UCHAR_MAX /* max value for a char */ 58 #define CHAR_MIN 0 /* min value for a char */ 59 #else 60 #define CHAR_MAX SCHAR_MAX /* max value for a char */ 61 #define CHAR_MIN SCHAR_MIN /* min value for a char */ 62 #endif 63 64 #define USHRT_MAX 0xffff /* max value for an unsigned short */ 65 #define SHRT_MAX 0x7fff /* max value for a short */ 66 #define SHRT_MIN (-0x7fff - 1) /* min value for a short */ 67 68 #define UINT_MAX 0xffffffffU /* max value for an unsigned int */ 69 #define INT_MAX 0x7fffffff /* max value for an int */ 70 #define INT_MIN (-0x7fffffff - 1) /* min value for an int */ 71 72 #if defined(__x86_64__) 73 #define ULONG_MAX 0xffffffffffffffffUL /* max for an unsigned long */ 74 #define LONG_MAX 0x7fffffffffffffffL /* max for a long */ 75 #define LONG_MIN (-0x7fffffffffffffffL - 1) /* min for a long */ 76 77 #ifdef __LONG_LONG_SUPPORTED 78 #define ULLONG_MAX 0xffffffffffffffffULL /* max value for an unsigned long long */ 79 #define LLONG_MAX 0x7fffffffffffffffLL /* max value for a long long */ 80 #define LLONG_MIN (-0x7fffffffffffffffLL - 1) /* min for a long long */ 81 #endif 82 #elif defined(__i386__) 83 #define ULONG_MAX 0xffffffffUL /* max for an unsigned long */ 84 #define LONG_MAX 0x7fffffffUL /* max for a long */ 85 #define LONG_MIN (-0x7fffffffL - 1) /* min for a long */ 86 87 #ifdef __LONG_LONG_SUPPORTED 88 #define ULLONG_MAX 0xffffffffULL /* max value for an unsigned long long */ 89 #define LLONG_MAX 0x7fffffffLL /* max value for a long long */ 90 #define LLONG_MIN (-0x7fffffffLL - 1) /* min for a long long */ 91 #endif 92 #endif 93 94 #if __POSIX_VISIBLE || __XSI_VISIBLE 95 #define SSIZE_MAX LONG_MAX /* max value for a ssize_t */ 96 #endif 97 98 #if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE 99 #define SIZE_T_MAX ULONG_MAX /* max value for a size_t */ 100 101 #define OFF_MAX LONG_MAX /* max value for an off_t */ 102 #define OFF_MIN LONG_MIN /* min value for an off_t */ 103 #endif 104 105 #if __BSD_VISIBLE 106 #define GID_MAX UINT_MAX /* max value for a gid_t */ 107 #define UID_MAX UINT_MAX /* max value for a uid_t */ 108 109 /* Quads and long longs are the same size. Ensure they stay in sync. */ 110 #define UQUAD_MAX ULLONG_MAX /* max value for a uquad_t */ 111 #define QUAD_MAX LLONG_MAX /* max value for a quad_t */ 112 #define QUAD_MIN LLONG_MIN /* min value for a quad_t */ 113 #endif 114 115 #if __XSI_VISIBLE || __POSIX_VISIBLE >= 200809 116 #if defined(__x86_64__) 117 #define LONG_BIT 64 118 #elif defined(__i386__) 119 #define LONG_BIT 32 120 #endif 121 #define WORD_BIT 32 122 #endif 123 124 #endif /* !_CPU_LIMITS_H_ */ 125