1/* 2 * Copyright (c) 2000,2001 Apple Computer, Inc. All rights reserved. 3 * 4 * We build on <machine/types.h> rather than <sys/types.h> in order to 5 * minimize the global namespace pollution (i.e., we'd like to define 6 * *only* those identifiers that the C standard mandates should be 7 * defined by <stdint.h>). Using <machine/types.h> means that (at 8 * least as of January 2001) all of the extra macros that do get 9 * #defined by #include'ing <stdint.h> are in the implementor's 10 * namespace ("_[A-Z].*" or "__.*"). 11 * 12 * The reason that we do #include the relevant ...types.h instead of 13 * creating several "competing" typedefs is to make header collisions 14 * less likely during the transition to C99. 15 * 16 * Caveat: There are still five extra typedef's defined by doing it 17 * this way: "u_int{8,16,32,64}_t" and "register_t". Might be 18 * fixable via pre- and post- #defines, but probably not worth it. 19 */ 20 21#ifndef _STDINT_H_ 22#define _STDINT_H_ 23 24#include <machine/types.h> 25 26/* from ISO/IEC 988:1999 spec */ 27 28/* 7.18.1.1 Exact-width integer types */ 29 /* int8_t is defined in <machine/types.h> */ 30 /* int16_t is defined in <machine/types.h> */ 31 /* int32_t is defined in <machine/types.h> */ 32 /* int64_t is defined in <machine/types.h> */ 33typedef u_int8_t uint8_t; /* u_int8_t is defined in <machine/types.h> */ 34typedef u_int16_t uint16_t; /* u_int16_t is defined in <machine/types.h> */ 35typedef u_int32_t uint32_t; /* u_int32_t is defined in <machine/types.h> */ 36typedef u_int64_t uint64_t; /* u_int64_t is defined in <machine/types.h> */ 37 38 39/* 7.18.1.2 Minumun-width integer types */ 40typedef int8_t int_least8_t; 41typedef int16_t int_least16_t; 42typedef int32_t int_least32_t; 43typedef int64_t int_least64_t; 44typedef uint8_t uint_least8_t; 45typedef uint16_t uint_least16_t; 46typedef uint32_t uint_least32_t; 47typedef uint64_t uint_least64_t; 48 49 50/* 7.18.1.3 Fastest-width integer types */ 51typedef int8_t int_fast8_t; 52typedef int16_t int_fast16_t; 53typedef int32_t int_fast32_t; 54typedef int64_t int_fast64_t; 55typedef uint8_t uint_fast8_t; 56typedef uint16_t uint_fast16_t; 57typedef uint32_t uint_fast32_t; 58typedef uint64_t uint_fast64_t; 59 60 61/* 7.18.1.4 Integer types capable of hgolding object pointers */ 62 /* intptr_t is defined in <machine/types.h> */ 63 /* uintptr_t is defined in <machine/types.h> */ 64 65 66/* 7.18.1.5 Greatest-width integer types */ 67typedef long long intmax_t; 68typedef unsigned long long uintmax_t; 69 70 71/* "C++ implementations should define these macros only when 72 * __STDC_LIMIT_MACROS is defined before <stdint.h> is included." 73 * In other words, if C++, then __STDC_LIMIT_MACROS enables the 74 * macros below. (Note that there also exists a different enabling 75 * macro (__STDC_CONSTANT_MACROS) for the last few, below.) 76 */ 77#if (! defined(__cplusplus)) || defined(__STDC_LIMIT_MACROS) 78 79 80/* 7.18.2 Limits of specified-width integer types: 81 * These #defines specify the minimum and maximum limits 82 * of each of the types declared above. 83 */ 84 85 86/* 7.18.2.1 Limits of exact-width integer types */ 87#define INT8_MIN -128 88#define INT16_MIN -32768 89#define INT32_MIN -2147483648 90#define INT64_MIN -9223372036854775808LL 91 92#define INT8_MAX +127 93#define INT16_MAX +32767 94#define INT32_MAX +2147483647 95#define INT64_MAX +9223372036854775807LL 96 97#define UINT8_MAX 255 98#define UINT16_MAX 65535 99#define UINT32_MAX 4294967295U 100#define UINT64_MAX 18446744073709551615ULL 101 102/* 7.18.2.2 Limits of minimum-width integer types */ 103#define INT_LEAST8_MIN INT8_MIN 104#define INT_LEAST16_MIN INT16_MIN 105#define INT_LEAST32_MIN INT32_MIN 106#define INT_LEAST64_MIN INT64_MIN 107 108#define INT_LEAST8_MAX INT8_MAX 109#define INT_LEAST16_MAX INT16_MAX 110#define INT_LEAST32_MAX INT32_MAX 111#define INT_LEAST64_MAX INT64_MAX 112 113#define UINT_LEAST8_MAX UINT8_MAX 114#define UINT_LEAST16_MAX UINT16_MAX 115#define UINT_LEAST32_MAX UINT32_MAX 116#define UINT_LEAST64_MAX UINT64_MAX 117 118/* 7.18.2.3 Limits of fastest minimum-width integer types */ 119#define INT_FAST8_MIN INT8_MIN 120#define INT_FAST16_MIN INT16_MIN 121#define INT_FAST32_MIN INT32_MIN 122#define INT_FAST64_MIN INT64_MIN 123 124#define INT_FAST8_MAX INT8_MAX 125#define INT_FAST16_MAX INT16_MAX 126#define INT_FAST32_MAX INT32_MAX 127#define INT_FAST64_MAX INT64_MAX 128 129#define UINT_FAST8_MAX UINT8_MAX 130#define UINT_FAST16_MAX UINT16_MAX 131#define UINT_FAST32_MAX UINT32_MAX 132#define UINT_FAST64_MAX UINT64_MAX 133 134/* 7.18.2.4 Limits of integer types capable of holding object pointers */ 135 136#define INTPTR_MIN INT32_MIN 137#define INTPTR_MAX INT32_MAX 138 139#define UINTPTR_MAX UINT32_MAX 140 141/* 7.18.2.5 Limits of greatest-width integer types */ 142#define INTMAX_MIN INT64_MIN 143#define INTMAX_MAX INT64_MAX 144 145#define UINTMAX_MAX UINT64_MAX 146 147/* 7.18.3 "Other" */ 148#define PTRDIFF_MIN INT32_MIN 149#define PTRDIFF_MAX INT32_MAX 150 151/* We have no sig_atomic_t yet, so no SIG_ATOMIC_{MIN,MAX}. 152 Should end up being {-127,127} or {0,255} ... or bigger. 153 My bet would be on one of {U}INT32_{MIN,MAX}. */ 154 155#define SIZE_MAX UINT32_MAX 156 157#define WCHAR_MAX INT32_MAX 158 159/* We have no wint_t yet, so no WINT_{MIN,MAX}. 160 Should end up being {U}INT32_{MIN,MAX}, depending. */ 161 162 163#endif /* if C++, then __STDC_LIMIT_MACROS enables the above macros */ 164 165/* "C++ implementations should define these macros only when 166 * __STDC_CONSTANT_MACROS is defined before <stdint.h> is included." 167 */ 168#if (! defined(__cplusplus)) || defined(__STDC_CONSTANT_MACROS) 169 170/* 7.18.4 Macros for integer constants */ 171#define INT8_C(v) ((int8_t)v) 172#define INT16_C(v) ((int16_t)v) 173#define INT32_C(v) (v ## L) 174#define INT64_C(v) (v ## LL) 175 176#define UINT8_C(v) ((uint8_t)v) 177#define UINT16_C(v) ((uint16_t)v) 178#define UINT32_C(v) (v ## UL) 179#define UINT64_C(v) (v ## ULL) 180 181#define INTMAX_C(v) (v ## LL) 182#define UINTMAX_C(v) (v ## ULL) 183 184#endif /* if C++, then __STDC_CONSTANT_MACROS enables the above macros */ 185 186#endif /* _STDINT_H_ */ 187