_limits.h (4169B) - Raw
1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)limits.h 8.3 (Berkeley) 1/4/94 32 */ 33 34 #ifndef _MACHINE__LIMITS_H_ 35 #define _MACHINE__LIMITS_H_ 36 37 /* 38 * According to ANSI (section 2.2.4.2), the values below must be usable by 39 * #if preprocessing directives. Additionally, the expression must have the 40 * same type as would an expression that is an object of the corresponding 41 * type converted according to the integral promotions. The subtraction for 42 * INT_MIN, etc., is so the value is not unsigned; e.g., 0x80000000 is an 43 * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2). 44 */ 45 46 #define __CHAR_BIT 8 /* number of bits in a char */ 47 48 #define __SCHAR_MAX 0x7f /* max value for a signed char */ 49 #define __SCHAR_MIN (-0x7f - 1) /* min value for a signed char */ 50 51 #define __UCHAR_MAX 0xff /* max value for an unsigned char */ 52 53 #define __USHRT_MAX 0xffff /* max value for an unsigned short */ 54 #define __SHRT_MAX 0x7fff /* max value for a short */ 55 #define __SHRT_MIN (-0x7fff - 1) /* min value for a short */ 56 57 #define __UINT_MAX 0xffffffff /* max value for an unsigned int */ 58 #define __INT_MAX 0x7fffffff /* max value for an int */ 59 #define __INT_MIN (-0x7fffffff - 1) /* min value for an int */ 60 61 #ifdef __LP64__ 62 #define __ULONG_MAX 0xffffffffffffffff 63 #define __LONG_MAX 0x7fffffffffffffff 64 #define __LONG_MIN (-0x7fffffffffffffff - 1) 65 #define __LONG_BIT 64 66 #else 67 #define __ULONG_MAX 0xffffffffUL /* max value for an unsigned long */ 68 #define __LONG_MAX 0x7fffffffL /* max value for a long */ 69 #define __LONG_MIN (-0x7fffffffL - 1) /* min value for a long */ 70 #define __LONG_BIT 32 71 #endif 72 73 #define __ULLONG_MAX 0xffffffffffffffffULL 74 #define __LLONG_MAX 0x7fffffffffffffffLL /* max value for a long long */ 75 #define __LLONG_MIN (-0x7fffffffffffffffLL - 1) /* min for a long long */ 76 77 #ifdef __LP64__ 78 #define __SSIZE_MAX __LONG_MAX /* max value for a ssize_t */ 79 #define __SIZE_T_MAX __ULONG_MAX /* max value for a size_t */ 80 #else 81 #define __SSIZE_MAX __INT_MAX /* max value for a ssize_t */ 82 #define __SIZE_T_MAX __UINT_MAX /* max value for a size_t */ 83 #endif 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 #define __WORD_BIT 32 94 95 /* Minimum signal stack size. */ 96 #define __MINSIGSTKSZ (512 * 4) 97 98 #endif /* !_MACHINE__LIMITS_H_ */