inttypes/inttypes.h

   1 /*
   2  * inttypes.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 INTTYPES_H
  13 #define INTTYPES_H
  14
  15 #include <limits.h>
  16
  17 /*** 64-bit type: 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 #if LONG_MAX == 9223372036854775807L
  29
  30 /* long is 64 bits */
  31 typedef signed long             int64_t;
  32 typedef unsigned long           uint64_t;
  33 #define _scn64                  "l"
  34 #define _pri64                  "l"
  35 #define INT64_C(x)              x ## L
  36 #define UINT64_C(x)             x ## UL
  37
  38 #elif LLONG_MAX == 9223372036854775807LL
  39
  40 /* long long is 64 bits */
  41 typedef signed long long        int64_t;
  42 typedef unsigned long long      uint64_t;
  43 #define _scn64                  "ll"
  44 #define _pri64                  "ll"
  45 #define INT64_C(x)              x ## LL
  46 #define UINT64_C(x)             x ## ULL
  47
  48 #else
  49
  50 #error "Neither long nor long long is 64 bits in size"
  51
  52 #endif
  53
  54 /*** 32-bit type: int or long ***/
  55
  56 #if INT_MAX == 2147483647
  57
  58 /* int is 32 bits */
  59 typedef signed int              int32_t;
  60 typedef unsigned int            uint32_t;
  61 #define _scn32                  ""
  62 #define _pri32                  ""
  63 #define INT32_C(x)              x
  64 #define UINT32_C(x)             x ## U
  65
  66 #elif LONG_MAX == 2147483647L
  67
  68 /* long is 32 bits */
  69 typedef signed long             int32_t;
  70 typedef unsigned long           uint32_t;
  71 #define _scn32                  "l"
  72 #define _pri32                  "l"
  73 #define INT32_C(x)              x ## L
  74 #define UINT32_C(x)             x ## UL
  75
  76 #else
  77
  78 #error "Neither int nor long is 32 bits in size"
  79
  80 #endif
  81
  82 /*** 16-bit size: int or short ***/
  83
  84 #if INT_MAX == 32767
  85
  86 /* int is 16 bits */
  87 typedef signed int              int16_t;
  88 typedef unsigned int            uint16_t;
  89 #define _scn16                  ""
  90 #define _pri16                  ""
  91 #define INT16_C(x)              x
  92 #define UINT16_C(x)             x ## U
  93
  94 #elif SHRT_MAX == 32767
  95
  96 /* short is 16 bits */
  97 typedef signed short            int16_t;
  98 typedef unsigned short          uint16_t;
  99 #define _scn16                  "h"
 100 #define _pri16                  ""
 101 #define INT16_C(x)              x
 102 #define UINT16_C(x)             x ## U
 103
 104 #else
 105
 106 #error "Neither short nor int is 16 bits in size"
 107
 108 #endif
 109
 110 /*** 8-bit size: char ***/
 111
 112 #if SCHAR_MAX == 127
 113
 114 /* char is 8 bits */
 115 typedef signed char             int8_t;
 116 typedef unsigned char           uint8_t;
 117 #define _scn8                   "hh"
 118 #define _pri8                   ""
 119 #define INT8_C(x)               x
 120 #define UINT8_C(x)              x ## U
 121
 122 #else
 123
 124 #error "char is not 8 bits in size"
 125
 126 #endif
 127
 128 /* The rest of this is common to all models */
 129
 130 #define PRId8           _pri8  "d"
 131 #define PRId16          _pri16 "d"
 132 #define PRId32          _pri32 "d"
 133 #define PRId64          _pri64 "d"
 134
 135 #define PRIi8           _pri8  "i"
 136 #define PRIi16          _pri16 "i"
 137 #define PRIi32          _pri32 "i"
 138 #define PRIi64          _pri64 "i"
 139
 140 #define PRIo8           _pri8  "o"
 141 #define PRIo16          _pri16 "o"
 142 #define PRIo32          _pri32 "o"
 143 #define PRIo64          _pri64 "o"
 144
 145 #define PRIu8           _pri8  "u"
 146 #define PRIu16          _pri16 "u"
 147 #define PRIu32          _pri32 "u"
 148 #define PRIu64          _pri64 "u"
 149
 150 #define PRIx8           _pri8  "x"
 151 #define PRIx16          _pri16 "x"
 152 #define PRIx32          _pri32 "x"
 153 #define PRIx64          _pri64 "x"
 154
 155 #define PRIX8           _pri8  "X"
 156 #define PRIX16          _pri16 "X"
 157 #define PRIX32          _pri32 "X"
 158 #define PRIX64          _pri64 "X"
 159
 160 #define SCNd8           _scn8  "d"
 161 #define SCNd16          _scn16 "d"
 162 #define SCNd32          _scn32 "d"
 163 #define SCNd64          _scn64 "d"
 164
 165 #define SCNi8           _scn8  "i"
 166 #define SCNi16          _scn16 "i"
 167 #define SCNi32          _scn32 "i"
 168 #define SCNi64          _scn64 "i"
 169
 170 #define SCNo8           _scn8  "o"
 171 #define SCNo16          _scn16 "o"
 172 #define SCNo32          _scn32 "o"
 173 #define SCNo64          _scn64 "o"
 174
 175 #define SCNu8           _scn8  "u"
 176 #define SCNu16          _scn16 "u"
 177 #define SCNu32          _scn32 "u"
 178 #define SCNu64          _scn64 "u"
 179
 180 #define SCNx8           _scn8  "x"
 181 #define SCNx16          _scn16 "x"
 182 #define SCNx32          _scn32 "x"
 183 #define SCNx64          _scn64 "x"
 184
 185 #define INT8_MIN        INT8_C(-128)
 186 #define INT8_MAX        INT8_C(127)
 187 #define UINT8_MAX       UINT8_C(255)
 188
 189 #define INT16_MIN       INT16_C(-32768)
 190 #define INT16_MAX       INT16_C(32767)
 191 #define UINT16_MAX      UINT16_C(65535)
 192
 193 #define INT32_MIN       INT32_C(-2147483648)
 194 #define INT32_MAX       INT32_C(2147483647)
 195 #define UINT32_MAX      UINT32_C(4294967295)
 196
 197 #define INT64_MIN       INT64_C(-9223372036854775808)
 198 #define INT64_MAX       INT64_C(9223372036854775807)
 199 #define UINT64_MAX      UINT64_C(18446744073709551615)
 200
 201 #endif /* INTTYPES_H */