include/nasmint.h

   1 /*
   2  * nasmint.h
   3  *
   4  * Small ersatz subset of <inttypes.h>, deriving the types from
   5  * <limits.h>.
   6  *
   7  * Important: the preprocessor may truncate numbers too large for it.
   8  * Therefore, test the signed types only ... truncation won't generate
   9  * a 01111111... bit pattern.
  10  */
  11
  12 #ifndef NASM_NASMINT_H
  13 #define NASM_NASMINT_H
  14
  15 #include <limits.h>
  16
  17 /*** 64-bit type: __int64, long or long long ***/
  18
  19 /* Some old versions of gcc <limits.h> omit LLONG_MAX */
  20 #ifndef LLONG_MAX
  21 # ifdef __LONG_LONG_MAX__
  22 #  define LLONG_MAX __LONG_LONG_MAX__
  23 # else
  24 #  define LLONG_MAX 0           /* Assume long long is unusable */
  25 # endif
  26 #endif
  27
  28 #ifndef _I64_MAX
  29 # ifdef _MSC_VER
  30 #  define _I64_MAX 9223372036854775807
  31 # else
  32 #  define _I64_MAX 0
  33 # endif
  34 #endif
  35
  36 #if _I64_MAX == 9223372036854775807
  37
  38 /* Windows-based compiler: use __int64 */
  39 typedef signed __int64          int64_t;
  40 typedef unsigned __int64        uint64_t;
  41 #define _scn64                  "I64"
  42 #define _pri64                  "I64"
  43 #define INT64_C(x)              x ## i64
  44 #define UINT64_C(x)             x ## ui64
  45
  46 #elif LONG_MAX == 9223372036854775807L
  47
  48 /* long is 64 bits */
  49 typedef signed long             int64_t;
  50 typedef unsigned long           uint64_t;
  51 #define _scn64                  "l"
  52 #define _pri64                  "l"
  53 #define INT64_C(x)              x ## L
  54 #define UINT64_C(x)             x ## UL
  55
  56 #elif LLONG_MAX == 9223372036854775807LL
  57
  58 /* long long is 64 bits */
  59 typedef signed long long        int64_t;
  60 typedef unsigned long long      uint64_t;
  61 #define _scn64                  "ll"
  62 #define _pri64                  "ll"
  63 #define INT64_C(x)              x ## LL
  64 #define UINT64_C(x)             x ## ULL
  65
  66 #else
  67
  68 #error "Neither long nor long long is 64 bits in size"
  69
  70 #endif
  71
  72 /*** 32-bit type: int or long ***/
  73
  74 #if INT_MAX == 2147483647
  75
  76 /* int is 32 bits */
  77 typedef signed int              int32_t;
  78 typedef unsigned int            uint32_t;
  79 #define _scn32                  ""
  80 #define _pri32                  ""
  81 #define INT32_C(x)              x
  82 #define UINT32_C(x)             x ## U
  83
  84 #elif LONG_MAX == 2147483647L
  85
  86 /* long is 32 bits */
  87 typedef signed long             int32_t;
  88 typedef unsigned long           uint32_t;
  89 #define _scn32                  "l"
  90 #define _pri32                  "l"
  91 #define INT32_C(x)              x ## L
  92 #define UINT32_C(x)             x ## UL
  93
  94 #else
  95
  96 #error "Neither int nor long is 32 bits in size"
  97
  98 #endif
  99
 100 /*** 16-bit size: int or short ***/
 101
 102 #if INT_MAX == 32767
 103
 104 /* int is 16 bits */
 105 typedef signed int              int16_t;
 106 typedef unsigned int            uint16_t;
 107 #define _scn16                  ""
 108 #define _pri16                  ""
 109 #define INT16_C(x)              x
 110 #define UINT16_C(x)             x ## U
 111
 112 #elif SHRT_MAX == 32767
 113
 114 /* short is 16 bits */
 115 typedef signed short            int16_t;
 116 typedef unsigned short          uint16_t;
 117 #define _scn16                  "h"
 118 #define _pri16                  ""
 119 #define INT16_C(x)              x
 120 #define UINT16_C(x)             x ## U
 121
 122 #else
 123
 124 #error "Neither short nor int is 16 bits in size"
 125
 126 #endif
 127
 128 /*** 8-bit size: char ***/
 129
 130 #if SCHAR_MAX == 127
 131
 132 /* char is 8 bits */
 133 typedef signed char             int8_t;
 134 typedef unsigned char           uint8_t;
 135 #define _scn8                   "hh"
 136 #define _pri8                   ""
 137 #define INT8_C(x)               x
 138 #define UINT8_C(x)              x ## U
 139
 140 #else
 141
 142 #error "char is not 8 bits in size"
 143
 144 #endif
 145
 146 /* The rest of this is common to all models */
 147
 148 #define PRId8           _pri8  "d"
 149 #define PRId16          _pri16 "d"
 150 #define PRId32          _pri32 "d"
 151 #define PRId64          _pri64 "d"
 152
 153 #define PRIi8           _pri8  "i"
 154 #define PRIi16          _pri16 "i"
 155 #define PRIi32          _pri32 "i"
 156 #define PRIi64          _pri64 "i"
 157
 158 #define PRIo8           _pri8  "o"
 159 #define PRIo16          _pri16 "o"
 160 #define PRIo32          _pri32 "o"
 161 #define PRIo64          _pri64 "o"
 162
 163 #define PRIu8           _pri8  "u"
 164 #define PRIu16          _pri16 "u"
 165 #define PRIu32          _pri32 "u"
 166 #define PRIu64          _pri64 "u"
 167
 168 #define PRIx8           _pri8  "x"
 169 #define PRIx16          _pri16 "x"
 170 #define PRIx32          _pri32 "x"
 171 #define PRIx64          _pri64 "x"
 172
 173 #define PRIX8           _pri8  "X"
 174 #define PRIX16          _pri16 "X"
 175 #define PRIX32          _pri32 "X"
 176 #define PRIX64          _pri64 "X"
 177
 178 #define SCNd8           _scn8  "d"
 179 #define SCNd16          _scn16 "d"
 180 #define SCNd32          _scn32 "d"
 181 #define SCNd64          _scn64 "d"
 182
 183 #define SCNi8           _scn8  "i"
 184 #define SCNi16          _scn16 "i"
 185 #define SCNi32          _scn32 "i"
 186 #define SCNi64          _scn64 "i"
 187
 188 #define SCNo8           _scn8  "o"
 189 #define SCNo16          _scn16 "o"
 190 #define SCNo32          _scn32 "o"
 191 #define SCNo64          _scn64 "o"
 192
 193 #define SCNu8           _scn8  "u"
 194 #define SCNu16          _scn16 "u"
 195 #define SCNu32          _scn32 "u"
 196 #define SCNu64          _scn64 "u"
 197
 198 #define SCNx8           _scn8  "x"
 199 #define SCNx16          _scn16 "x"
 200 #define SCNx32          _scn32 "x"
 201 #define SCNx64          _scn64 "x"
 202
 203 #define INT8_MIN        INT8_C(-128)
 204 #define INT8_MAX        INT8_C(127)
 205 #define UINT8_MAX       UINT8_C(255)
 206
 207 #define INT16_MIN       INT16_C(-32768)
 208 #define INT16_MAX       INT16_C(32767)
 209 #define UINT16_MAX      UINT16_C(65535)
 210
 211 #define INT32_MIN       INT32_C(-2147483648)
 212 #define INT32_MAX       INT32_C(2147483647)
 213 #define UINT32_MAX      UINT32_C(4294967295)
 214
 215 #define INT64_MIN       INT64_C(-9223372036854775808)
 216 #define INT64_MAX       INT64_C(9223372036854775807)
 217 #define UINT64_MAX      UINT64_C(18446744073709551615)
 218
 219 #endif /* NASM_NASMINT_H */