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 #define CHAR_BIT 8 /* number of bits in a char */ 37 #define MB_LEN_MAX 6 /* Allow 31 bit UTF2 */ 38 39 /* 40 * According to ANSI (section 2.2.4.2), the values below must be usable by 41 * #if preprocessing directives. Additionally, the expression must have the 42 * same type as would an expression that is an object of the corresponding 43 * type converted according to the integral promotions. The subtraction for 44 * INT_MIN, etc., is so the value is not unsigned; e.g., 0x80000000 is an 45 * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2). 46 * These numbers are for the default configuration of gcc. They work for 47 * some other compilers as well, but this should not be depended on. 48 */ 49 #define SCHAR_MAX 0x7f /* max value for a signed char */ 50 #define SCHAR_MIN (-0x7f - 1) /* min value for a signed char */ 51 52 #define UCHAR_MAX 0xff /* max value for an unsigned char */ 53 54 #ifdef __CHAR_UNSIGNED__ 55 #define CHAR_MAX UCHAR_MAX /* max value for a char */ 56 #define CHAR_MIN 0 /* min value for a char */ 57 #else 58 #define CHAR_MAX SCHAR_MAX /* max value for a char */ 59 #define CHAR_MIN SCHAR_MIN /* min value for a char */ 60 #endif 61 62 #define USHRT_MAX 0xffff /* max value for an unsigned short */ 63 #define SHRT_MAX 0x7fff /* max value for a short */ 64 #define SHRT_MIN (-0x7fff - 1) /* min value for a short */ 65 66 #define UINT_MAX 0xffffffffU /* max value for an unsigned int */ 67 #define INT_MAX 0x7fffffff /* max value for an int */ 68 #define INT_MIN (-0x7fffffff - 1) /* min value for an int */ 69 70 #define ULONG_MAX 0xffffffffffffffffUL /* max for an unsigned long */ 71 #define LONG_MAX 0x7fffffffffffffffL /* max for a long */ 72 #define LONG_MIN (-0x7fffffffffffffffL - 1) /* min for a long */ 73 74 /* XXX what is long long on x86_64? */ 75 #define ULLONG_MAX 0xffffffffffffffffULL /* max value for an unsigned long long */ 76 #define LLONG_MAX 0x7fffffffffffffffLL /* max value for a long long */ 77 #define LLONG_MIN (-0x7fffffffffffffffLL - 1) /* min for a long long */ 78 79 #if !defined(_ANSI_SOURCE) 80 #define SSIZE_MAX LONG_MAX /* max value for a ssize_t */ 81 82 #if !defined(_POSIX_SOURCE) 83 #define SIZE_T_MAX ULONG_MAX /* max value for a size_t */ 84 85 #define OFF_MAX LONG_MAX /* max value for an off_t */ 86 #define OFF_MIN LONG_MIN /* min value for an off_t */ 87 88 #define GID_MAX UINT_MAX /* max value for a gid_t */ 89 #define UID_MAX UINT_MAX /* max value for a uid_t */ 90 91 /* Quads and long longs are the same size. Ensure they stay in sync. */ 92 #define UQUAD_MAX ULLONG_MAX /* max value for a uquad_t */ 93 #define QUAD_MAX LLONG_MAX /* max value for a quad_t */ 94 #define QUAD_MIN LLONG_MIN /* min value for a quad_t */ 95 96 #define LONG_BIT 64 97 #define WORD_BIT 32 98 99 #endif /* !_POSIX_SOURCE */ 100 #endif /* !_ANSI_SOURCE */ 101 102 #endif /* !_CPU_LIMITS_H_ */ 103