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 */ 35 36 #ifndef _I386_LIMITS_H_ 37 #define _I386_LIMITS_H_ 38 39 #if defined (__i386__) || defined (__x86_64__) 40 41 #include <sys/cdefs.h> 42 #ifndef DRIVERKIT 43 #include <i386/_limits.h> 44 #endif 45 46 #if defined(KERNEL) 47 #ifdef XNU_KERNEL_PRIVATE 48 /* 49 * Xcode doesn't currently set up search paths correctly for Kernel extensions, 50 * so the clang headers are not seen in the correct order to use their limits. 51 */ 52 #endif 53 #define USE_CLANG_LIMITS 0 54 #else 55 #if defined(__has_feature) && __has_feature(modules) 56 #define USE_CLANG_LIMITS 1 57 #else 58 #define USE_CLANG_LIMITS 0 59 #endif 60 #endif 61 62 #undef MB_LEN_MAX 63 #define MB_LEN_MAX 6 /* Allow 31 bit UTF2 */ 64 65 #ifndef DRIVERKIT 66 #if !defined(_ANSI_SOURCE) && (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)) 67 #define CLK_TCK __DARWIN_CLK_TCK /* ticks per second */ 68 #endif /* !_ANSI_SOURCE && (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 69 #endif 70 71 #if (defined(__has_include) && __has_include(<__xnu_libcxx_sentinel.h>)) 72 73 #if !__has_include_next(<limits.h>) 74 #error Do not build with -nostdinc (use GCC_USE_STANDARD_INCLUDE_SEARCHING=NO) 75 #else 76 #include_next <limits.h> 77 #endif /* __has_include_next */ 78 79 #elif !USE_CLANG_LIMITS 80 81 #define CHAR_BIT 8 /* number of bits in a char */ 82 83 /* 84 * According to ANSI (section 2.2.4.2), the values below must be usable by 85 * #if preprocessing directives. Additionally, the expression must have the 86 * same type as would an expression that is an object of the corresponding 87 * type converted according to the integral promotions. The subtraction for 88 * INT_MIN and LONG_MIN is so the value is not unsigned; 2147483648 is an 89 * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2). 90 * These numbers work for pcc as well. The UINT_MAX and ULONG_MAX values 91 * are written as hex so that GCC will be quiet about large integer constants. 92 */ 93 #define SCHAR_MAX 127 /* min value for a signed char */ 94 #define SCHAR_MIN (-128) /* max value for a signed char */ 95 96 #define UCHAR_MAX 255 /* max value for an unsigned char */ 97 #define CHAR_MAX 127 /* max value for a char */ 98 #define CHAR_MIN (-128) /* min value for a char */ 99 100 #define USHRT_MAX 65535 /* max value for an unsigned short */ 101 #define SHRT_MAX 32767 /* max value for a short */ 102 #define SHRT_MIN (-32768) /* min value for a short */ 103 104 #define UINT_MAX 0xffffffff /* max value for an unsigned int */ 105 #define INT_MAX 2147483647 /* max value for an int */ 106 #define INT_MIN (-2147483647-1) /* min value for an int */ 107 108 #ifdef __LP64__ 109 #define ULONG_MAX 0xffffffffffffffffUL /* max unsigned long */ 110 #define LONG_MAX 0x7fffffffffffffffL /* max signed long */ 111 #define LONG_MIN (-0x7fffffffffffffffL-1) /* min signed long */ 112 #else /* !__LP64__ */ 113 #define ULONG_MAX 0xffffffffUL /* max unsigned long */ 114 #define LONG_MAX 2147483647L /* max signed long */ 115 #define LONG_MIN (-2147483647L-1) /* min signed long */ 116 #endif /* __LP64__ */ 117 118 #define ULLONG_MAX 0xffffffffffffffffULL /* max unsigned long long */ 119 #define LLONG_MAX 0x7fffffffffffffffLL /* max signed long long */ 120 #define LLONG_MIN (-0x7fffffffffffffffLL-1) /* min signed long long */ 121 122 #endif /* !USE_CLANG_LIMITS */ 123 124 #if !defined(_ANSI_SOURCE) 125 #ifdef __LP64__ 126 #define LONG_BIT 64 127 #else /* !__LP64__ */ 128 #define LONG_BIT 32 129 #endif /* __LP64__ */ 130 #define SSIZE_MAX LONG_MAX /* max value for a ssize_t */ 131 #define WORD_BIT 32 132 133 #if (!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)) || defined(_DARWIN_C_SOURCE) 134 #define SIZE_T_MAX ULONG_MAX /* max value for a size_t */ 135 136 #define UQUAD_MAX ULLONG_MAX 137 #define QUAD_MAX LLONG_MAX 138 #define QUAD_MIN LLONG_MIN 139 140 #endif /* (!_POSIX_C_SOURCE && !_XOPEN_SOURCE) || _DARWIN_C_SOURCE */ 141 #endif /* !_ANSI_SOURCE */ 142 143 #undef USE_CLANG_LIMITS 144 145 #endif /* defined (__i386__) || defined (__x86_64__) */ 146 147 #endif /* _I386_LIMITS_H_ */ 148