1 /* ISO C9x 7.18 Integer types <stdint.h> 2 * Based on ISO/IEC SC22/WG14 9899 Committee draft (SC22 N2794) 3 * 4 * THIS SOFTWARE IS NOT COPYRIGHTED 5 * 6 * Contributor: Danny Smith <danny_r_smith_2001@yahoo.co.nz> 7 * 8 * This source code is offered for use in the public domain. You may 9 * use, modify or distribute it freely. 10 * 11 * This code is distributed in the hope that it will be useful but 12 * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY 13 * DISCLAIMED. This includes but is not limited to warranties of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 15 * 16 * Date: 2000-12-02 17 */ 18 19 20 #ifndef _STDINT_H 21 #define _STDINT_H 22 #define __need_wint_t 23 #define __need_wchar_t 24 #include <stddef.h> 25 26 /* 7.18.1.1 Exact-width integer types */ 27 typedef signed char int8_t; 28 typedef unsigned char uint8_t; 29 typedef short int16_t; 30 typedef unsigned short uint16_t; 31 typedef int int32_t; 32 typedef unsigned uint32_t; 33 typedef __int64 int64_t; 34 typedef unsigned __int64 uint64_t; 35 36 /* 7.18.1.2 Minimum-width integer types */ 37 typedef signed char int_least8_t; 38 typedef unsigned char uint_least8_t; 39 typedef short int_least16_t; 40 typedef unsigned short uint_least16_t; 41 typedef int int_least32_t; 42 typedef unsigned uint_least32_t; 43 typedef __int64 int_least64_t; 44 typedef unsigned __int64 uint_least64_t; 45 46 /* 7.18.1.3 Fastest minimum-width integer types 47 * Not actually guaranteed to be fastest for all purposes 48 * Here we use the exact-width types for 8 and 16-bit ints. 49 */ 50 typedef char int_fast8_t; 51 typedef unsigned char uint_fast8_t; 52 typedef short int_fast16_t; 53 typedef unsigned short uint_fast16_t; 54 typedef int int_fast32_t; 55 typedef unsigned int uint_fast32_t; 56 typedef __int64 int_fast64_t; 57 typedef unsigned __int64 uint_fast64_t; 58 59 /* 7.18.1.4 Integer types capable of holding object pointers */ 60 /*typedef int intptr_t; 61 typedef unsigned uintptr_t;*/ 62 63 /* 7.18.1.5 Greatest-width integer types */ 64 typedef __int64 intmax_t; 65 typedef unsigned __int64 uintmax_t; 66 67 /* 7.18.2 Limits of specified-width integer types */ 68 #if !defined ( __cplusplus) || defined (__STDC_LIMIT_MACROS) 69 70 /* 7.18.2.1 Limits of exact-width integer types */ 71 #define INT8_MIN (-128) 72 #define INT16_MIN (-32768) 73 #define INT32_MIN (-2147483647 - 1) 74 #define INT64_MIN (-9223372036854775807LL - 1) 75 76 #define INT8_MAX 127 77 #define INT16_MAX 32767 78 #define INT32_MAX 2147483647 79 #define INT64_MAX 9223372036854775807LL 80 81 #define UINT8_MAX 0xff /* 255U */ 82 #define UINT16_MAX 0xffff /* 65535U */ 83 #define UINT32_MAX 0xffffffff /* 4294967295U */ 84 #define UINT64_MAX 0xffffffffffffffffULL /* 18446744073709551615ULL */ 85 86 /* 7.18.2.2 Limits of minimum-width integer types */ 87 #define INT_LEAST8_MIN INT8_MIN 88 #define INT_LEAST16_MIN INT16_MIN 89 #define INT_LEAST32_MIN INT32_MIN 90 #define INT_LEAST64_MIN INT64_MIN 91 92 #define INT_LEAST8_MAX INT8_MAX 93 #define INT_LEAST16_MAX INT16_MAX 94 #define INT_LEAST32_MAX INT32_MAX 95 #define INT_LEAST64_MAX INT64_MAX 96 97 #define UINT_LEAST8_MAX UINT8_MAX 98 #define UINT_LEAST16_MAX UINT16_MAX 99 #define UINT_LEAST32_MAX UINT32_MAX 100 #define UINT_LEAST64_MAX UINT64_MAX 101 102 /* 7.18.2.3 Limits of fastest minimum-width integer types */ 103 #define INT_FAST8_MIN INT8_MIN 104 #define INT_FAST16_MIN INT16_MIN 105 #define INT_FAST32_MIN INT32_MIN 106 #define INT_FAST64_MIN INT64_MIN 107 108 #define INT_FAST8_MAX INT8_MAX 109 #define INT_FAST16_MAX INT16_MAX 110 #define INT_FAST32_MAX INT32_MAX 111 #define INT_FAST64_MAX INT64_MAX 112 113 #define UINT_FAST8_MAX UINT8_MAX 114 #define UINT_FAST16_MAX UINT16_MAX 115 #define UINT_FAST32_MAX UINT32_MAX 116 #define UINT_FAST64_MAX UINT64_MAX 117 118 /* 7.18.2.4 Limits of integer types capable of holding 119 object pointers */ 120 #if defined(_WIN64) || defined(__LP64__) 121 #define INTPTR_MIN INT64_MIN 122 #define INTPTR_MAX INT64_MAX 123 #define UINTPTR_MAX UINT64_MAX 124 #else 125 #define INTPTR_MIN INT32_MIN 126 #define INTPTR_MAX INT32_MAX 127 #define UINTPTR_MAX UINT32_MAX 128 #endif 129 130 /* 7.18.2.5 Limits of greatest-width integer types */ 131 #define INTMAX_MIN INT64_MIN 132 #define INTMAX_MAX INT64_MAX 133 #define UINTMAX_MAX UINT64_MAX 134 135 /* 7.18.3 Limits of other integer types */ 136 #if defined(_WIN64) || defined(__LP64__) 137 #define PTRDIFF_MIN INT64_MIN 138 #define PTRDIFF_MAX INT64_MAX 139 #else 140 #define PTRDIFF_MIN INT32_MIN 141 #define PTRDIFF_MAX INT32_MAX 142 #endif 143 144 #define SIG_ATOMIC_MIN INT32_MIN 145 #define SIG_ATOMIC_MAX INT32_MAX 146 147 #ifndef SIZE_MAX 148 #if defined(_WIN64) || defined(__LP64__) 149 #define SIZE_MAX UINT64_MAX 150 #else 151 #define SIZE_MAX UINT32_MAX 152 #endif 153 #endif 154 155 #ifndef WCHAR_MIN /* also in wchar.h */ 156 #define WCHAR_MIN 0 157 #define WCHAR_MAX ((wchar_t)-1) /* UINT16_MAX */ 158 #endif 159 160 /* 161 * wint_t is unsigned short for compatibility with MS runtime 162 */ 163 #define WINT_MIN 0 164 #define WINT_MAX ((wint_t)-1) /* UINT16_MAX */ 165 166 #endif /* !defined ( __cplusplus) || defined __STDC_LIMIT_MACROS */ 167 168 169 /* 7.18.4 Macros for integer constants */ 170 #if !defined ( __cplusplus) || defined (__STDC_CONSTANT_MACROS) 171 172 /* 7.18.4.1 Macros for minimum-width integer constants 173 174 Accoding to Douglas Gwyn <gwyn@arl.mil>: 175 "This spec was changed in ISO/IEC 9899:1999 TC1; in ISO/IEC 176 9899:1999 as initially published, the expansion was required 177 to be an integer constant of precisely matching type, which 178 is impossible to accomplish for the shorter types on most 179 platforms, because C99 provides no standard way to designate 180 an integer constant with width less than that of type int. 181 TC1 changed this to require just an integer constant 182 *expression* with *promoted* type." 183 184 The trick used here is from Clive D W Feather. 185 */ 186 187 #define INT8_C(val) (INT_LEAST8_MAX-INT_LEAST8_MAX+(val)) 188 #define INT16_C(val) (INT_LEAST16_MAX-INT_LEAST16_MAX+(val)) 189 #define INT32_C(val) (INT_LEAST32_MAX-INT_LEAST32_MAX+(val)) 190 #define INT64_C(val) (INT_LEAST64_MAX-INT_LEAST64_MAX+(val)) 191 192 #define UINT8_C(val) (UINT_LEAST8_MAX-UINT_LEAST8_MAX+(val)) 193 #define UINT16_C(val) (UINT_LEAST16_MAX-UINT_LEAST16_MAX+(val)) 194 #define UINT32_C(val) (UINT_LEAST32_MAX-UINT_LEAST32_MAX+(val)) 195 #define UINT64_C(val) (UINT_LEAST64_MAX-UINT_LEAST64_MAX+(val)) 196 197 /* 7.18.4.2 Macros for greatest-width integer constants */ 198 #define INTMAX_C(val) (INTMAX_MAX-INTMAX_MAX+(val)) 199 #define UINTMAX_C(val) (UINTMAX_MAX-UINTMAX_MAX+(val)) 200 201 #endif /* !defined ( __cplusplus) || defined __STDC_CONSTANT_MACROS */ 202 203 #endif 204