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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)limits.h 8.3 (Berkeley) 1/4/94 34 * $FreeBSD$ 35 */ 36 37 #ifndef _MACHINE__LIMITS_H_ 38 #define _MACHINE__LIMITS_H_ 39 40 /* 41 * According to ANSI (section 2.2.4.2), the values below must be usable by 42 * #if preprocessing directives. Additionally, the expression must have the 43 * same type as would an expression that is an object of the corresponding 44 * type converted according to the integral promotions. The subtraction for 45 * INT_MIN, etc., is so the value is not unsigned; e.g., 0x80000000 is an 46 * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2). 47 * These numbers are for the default configuration of gcc. They work for 48 * some other compilers as well, but this should not be depended on. 49 */ 50 51 #define __CHAR_BIT 8 /* number of bits in a char */ 52 53 #define __SCHAR_MAX 0x7f /* max value for a signed char */ 54 #define __SCHAR_MIN (-0x7f - 1) /* min value for a signed char */ 55 56 #define __UCHAR_MAX 0xff /* max value for an unsigned char */ 57 58 #define __USHRT_MAX 0xffff /* max value for an unsigned short */ 59 #define __SHRT_MAX 0x7fff /* max value for a short */ 60 #define __SHRT_MIN (-0x7fff - 1) /* min value for a short */ 61 62 #define __UINT_MAX 0xffffffffU /* max value for an unsigned int */ 63 #define __INT_MAX 0x7fffffff /* max value for an int */ 64 #define __INT_MIN (-0x7fffffff - 1) /* min value for an int */ 65 66 /* Bad hack for gcc configured to give 64-bit longs. */ 67 #ifdef _LARGE_LONG 68 #define __ULONG_MAX 0xffffffffffffffffUL 69 #define __LONG_MAX 0x7fffffffffffffffL 70 #define __LONG_MIN (-0x7fffffffffffffffL - 1) 71 #else 72 #define __ULONG_MAX 0xffffffffUL /* max value for an unsigned long */ 73 #define __LONG_MAX 0x7fffffffL /* max value for a long */ 74 #define __LONG_MIN (-0x7fffffffL - 1) /* min value for a long */ 75 #endif 76 77 #define __ULLONG_MAX 0xffffffffffffffffULL 78 #define __LLONG_MAX 0x7fffffffffffffffLL /* max value for a long long */ 79 #define __LLONG_MIN (-0x7fffffffffffffffLL - 1) /* min for a long long */ 80 81 #define __SSIZE_MAX __INT_MAX /* max value for a ssize_t */ 82 83 #define __SIZE_T_MAX __UINT_MAX /* max value for a size_t */ 84 85 #define __OFF_MAX __LLONG_MAX /* max value for an off_t */ 86 #define __OFF_MIN __LLONG_MIN /* min value for an off_t */ 87 88 /* Quads and long longs are the same size. Ensure they stay in sync. */ 89 #define __UQUAD_MAX __ULLONG_MAX /* max value for a uquad_t */ 90 #define __QUAD_MAX __LLONG_MAX /* max value for a quad_t */ 91 #define __QUAD_MIN __LLONG_MIN /* min value for a quad_t */ 92 93 #ifdef _LARGE_LONG 94 #define __LONG_BIT 64 95 #else 96 #define __LONG_BIT 32 97 #endif 98 #define __WORD_BIT 32 99 100 #endif /* !_MACHINE__LIMITS_H_ */ 101