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1 /* ISO C9x 7.18 Integer types <stdint.h> |
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2 * Based on ISO/IEC SC22/WG14 9899 Committee draft (SC22 N2794) |
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3 * |
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4 * THIS SOFTWARE IS NOT COPYRIGHTED |
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5 * |
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6 * Contributor: Danny Smith <danny_r_smith_2001@yahoo.co.nz> |
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7 * |
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8 * This source code is offered for use in the public domain. You may |
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9 * use, modify or distribute it freely. |
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10 * |
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11 * This code is distributed in the hope that it will be useful but |
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12 * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY |
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13 * DISCLAIMED. This includes but is not limited to warranties of |
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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15 * |
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16 * Date: 2000-12-02 |
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17 */ |
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18 |
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19 |
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20 #ifndef _STDINT_H |
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21 #define _STDINT_H |
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22 #define __need_wint_t |
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23 #define __need_wchar_t |
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24 #include <stddef.h> |
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25 |
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26 /* 7.18.1.1 Exact-width integer types */ |
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27 typedef signed char int8_t; |
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28 typedef unsigned char uint8_t; |
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29 typedef short int16_t; |
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30 typedef unsigned short uint16_t; |
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31 typedef int int32_t; |
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32 typedef unsigned uint32_t; |
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33 typedef long long int64_t; |
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34 typedef unsigned long long uint64_t; |
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35 |
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36 /* 7.18.1.2 Minimum-width integer types */ |
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37 typedef signed char int_least8_t; |
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38 typedef unsigned char uint_least8_t; |
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39 typedef short int_least16_t; |
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40 typedef unsigned short uint_least16_t; |
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41 typedef int int_least32_t; |
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42 typedef unsigned uint_least32_t; |
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43 typedef long long int_least64_t; |
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44 typedef unsigned long long uint_least64_t; |
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45 |
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46 /* 7.18.1.3 Fastest minimum-width integer types |
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47 * Not actually guaranteed to be fastest for all purposes |
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48 * Here we use the exact-width types for 8 and 16-bit ints. |
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49 */ |
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50 typedef char int_fast8_t; |
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51 typedef unsigned char uint_fast8_t; |
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52 typedef short int_fast16_t; |
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53 typedef unsigned short uint_fast16_t; |
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54 typedef int int_fast32_t; |
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55 typedef unsigned int uint_fast32_t; |
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56 typedef long long int_fast64_t; |
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57 typedef unsigned long long uint_fast64_t; |
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58 |
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59 /* 7.18.1.4 Integer types capable of holding object pointers */ |
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60 |
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61 #ifndef _INTPTR_T_DEFINED |
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62 #define _INTPTR_T_DEFINED |
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63 #ifdef _WIN64 |
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64 typedef __int64 intptr_t; |
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65 #else |
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66 typedef int intptr_t; |
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67 #endif |
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68 #endif |
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69 |
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70 #ifndef _UINTPTR_T_DEFINED |
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71 #define _UINTPTR_T_DEFINED |
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72 #ifdef _WIN64 |
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73 typedef unsigned __int64 uintptr_t; |
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74 #else |
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75 typedef unsigned int uintptr_t; |
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76 #endif |
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77 #endif |
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78 |
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79 /* 7.18.1.5 Greatest-width integer types */ |
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80 typedef long long intmax_t; |
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81 typedef unsigned long long uintmax_t; |
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82 |
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83 /* 7.18.2 Limits of specified-width integer types */ |
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84 #if !defined ( __cplusplus) || defined (__STDC_LIMIT_MACROS) |
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85 |
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86 /* 7.18.2.1 Limits of exact-width integer types */ |
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87 #define INT8_MIN (-128) |
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88 #define INT16_MIN (-32768) |
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89 #define INT32_MIN (-2147483647 - 1) |
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90 #define INT64_MIN (-9223372036854775807LL - 1) |
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91 |
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92 #define INT8_MAX 127 |
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93 #define INT16_MAX 32767 |
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94 #define INT32_MAX 2147483647 |
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95 #define INT64_MAX 9223372036854775807LL |
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96 |
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97 #define UINT8_MAX 0xff /* 255U */ |
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98 #define UINT16_MAX 0xffff /* 65535U */ |
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99 #define UINT32_MAX 0xffffffff /* 4294967295U */ |
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100 #define UINT64_MAX 0xffffffffffffffffULL /* 18446744073709551615ULL */ |
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101 |
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102 /* 7.18.2.2 Limits of minimum-width integer types */ |
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103 #define INT_LEAST8_MIN INT8_MIN |
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104 #define INT_LEAST16_MIN INT16_MIN |
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105 #define INT_LEAST32_MIN INT32_MIN |
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106 #define INT_LEAST64_MIN INT64_MIN |
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107 |
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108 #define INT_LEAST8_MAX INT8_MAX |
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109 #define INT_LEAST16_MAX INT16_MAX |
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110 #define INT_LEAST32_MAX INT32_MAX |
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111 #define INT_LEAST64_MAX INT64_MAX |
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112 |
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113 #define UINT_LEAST8_MAX UINT8_MAX |
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114 #define UINT_LEAST16_MAX UINT16_MAX |
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115 #define UINT_LEAST32_MAX UINT32_MAX |
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116 #define UINT_LEAST64_MAX UINT64_MAX |
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117 |
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118 /* 7.18.2.3 Limits of fastest minimum-width integer types */ |
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119 #define INT_FAST8_MIN INT8_MIN |
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120 #define INT_FAST16_MIN INT16_MIN |
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121 #define INT_FAST32_MIN INT32_MIN |
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122 #define INT_FAST64_MIN INT64_MIN |
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123 |
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124 #define INT_FAST8_MAX INT8_MAX |
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125 #define INT_FAST16_MAX INT16_MAX |
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126 #define INT_FAST32_MAX INT32_MAX |
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127 #define INT_FAST64_MAX INT64_MAX |
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128 |
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129 #define UINT_FAST8_MAX UINT8_MAX |
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130 #define UINT_FAST16_MAX UINT16_MAX |
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131 #define UINT_FAST32_MAX UINT32_MAX |
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132 #define UINT_FAST64_MAX UINT64_MAX |
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133 |
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134 /* 7.18.2.4 Limits of integer types capable of holding |
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135 object pointers */ |
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136 #ifdef _WIN64 |
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137 #define INTPTR_MIN INT64_MIN |
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138 #define INTPTR_MAX INT64_MAX |
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139 #define UINTPTR_MAX UINT64_MAX |
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140 #else |
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141 #define INTPTR_MIN INT32_MIN |
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142 #define INTPTR_MAX INT32_MAX |
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143 #define UINTPTR_MAX UINT32_MAX |
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144 #endif |
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145 |
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146 /* 7.18.2.5 Limits of greatest-width integer types */ |
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147 #define INTMAX_MIN INT64_MIN |
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148 #define INTMAX_MAX INT64_MAX |
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149 #define UINTMAX_MAX UINT64_MAX |
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150 |
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151 /* 7.18.3 Limits of other integer types */ |
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152 #define PTRDIFF_MIN INTPTR_MIN |
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153 #define PTRDIFF_MAX INTPTR_MAX |
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154 |
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155 #define SIG_ATOMIC_MIN INTPTR_MIN |
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156 #define SIG_ATOMIC_MAX INTPTR_MAX |
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157 |
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158 #define SIZE_MAX UINTPTR_MAX |
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159 |
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160 #ifndef WCHAR_MIN /* also in wchar.h */ |
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161 #define WCHAR_MIN 0 |
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162 #define WCHAR_MAX 0xffff /* UINT16_MAX */ |
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163 #endif |
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164 |
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165 /* |
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166 * wint_t is unsigned short for compatibility with MS runtime |
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167 */ |
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168 #define WINT_MIN 0 |
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169 #define WINT_MAX 0xffff /* UINT16_MAX */ |
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170 |
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171 #endif /* !defined ( __cplusplus) || defined __STDC_LIMIT_MACROS */ |
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172 |
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173 |
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174 /* 7.18.4 Macros for integer constants */ |
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175 #if !defined ( __cplusplus) || defined (__STDC_CONSTANT_MACROS) |
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176 |
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177 /* 7.18.4.1 Macros for minimum-width integer constants |
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178 |
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179 Accoding to Douglas Gwyn <gwyn@arl.mil>: |
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180 "This spec was changed in ISO/IEC 9899:1999 TC1; in ISO/IEC |
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181 9899:1999 as initially published, the expansion was required |
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182 to be an integer constant of precisely matching type, which |
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183 is impossible to accomplish for the shorter types on most |
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184 platforms, because C99 provides no standard way to designate |
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185 an integer constant with width less than that of type int. |
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186 TC1 changed this to require just an integer constant |
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187 *expression* with *promoted* type." |
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188 */ |
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189 |
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190 #define INT8_C(val) ((int8_t) + (val)) |
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191 #define UINT8_C(val) ((uint8_t) + (val##U)) |
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192 #define INT16_C(val) ((int16_t) + (val)) |
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193 #define UINT16_C(val) ((uint16_t) + (val##U)) |
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194 |
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195 #define INT32_C(val) val##L |
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196 #define UINT32_C(val) val##UL |
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197 #define INT64_C(val) val##LL |
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198 #define UINT64_C(val) val##ULL |
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199 |
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200 /* 7.18.4.2 Macros for greatest-width integer constants */ |
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201 #define INTMAX_C(val) INT64_C(val) |
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202 #define UINTMAX_C(val) UINT64_C(val) |
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203 |
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204 #endif /* !defined ( __cplusplus) || defined __STDC_CONSTANT_MACROS */ |
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205 |
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206 #endif |