src/include/stdint.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #ifndef STDINT_H
   4 #define STDINT_H
   5
   6 /* Fixed width integer types */
   7 typedef signed char        int8_t;
   8 typedef unsigned char      uint8_t;
   9
  10 typedef signed short       int16_t;
  11 typedef unsigned short     uint16_t;
  12
  13 typedef signed int         int32_t;
  14 typedef unsigned int       uint32_t;
  15
  16 typedef signed long long   int64_t;
  17 typedef unsigned long long uint64_t;
  18
  19 /* Types for 'void *' pointers */
  20 typedef signed long        intptr_t;
  21 typedef unsigned long      uintptr_t;
  22
  23 /* Ensure that the widths are all correct */
  24 _Static_assert(sizeof(int8_t) == 1, "Size of int8_t is incorrect");
  25 _Static_assert(sizeof(uint8_t) == 1, "Size of uint8_t is incorrect");
  26
  27 _Static_assert(sizeof(int16_t) == 2, "Size of int16_t is incorrect");
  28 _Static_assert(sizeof(uint16_t) == 2, "Size of uint16_t is incorrect");
  29
  30 _Static_assert(sizeof(int32_t) == 4, "Size of int32_t is incorrect");
  31 _Static_assert(sizeof(uint32_t) == 4, "Size of uint32_t is incorrect");
  32
  33 _Static_assert(sizeof(int64_t) == 8, "Size of int64_t is incorrect");
  34 _Static_assert(sizeof(uint64_t) == 8, "Size of uint64_t is incorrect");
  35
  36 _Static_assert(sizeof(intptr_t) == sizeof(void *), "Size of intptr_t is incorrect");
  37 _Static_assert(sizeof(uintptr_t) == sizeof(void *), "Size of uintptr_t is incorrect");
  38
  39 /* Maximum width integer types */
  40 typedef int64_t  intmax_t;
  41 typedef uint64_t uintmax_t;
  42
  43 /* Convenient typedefs */
  44 typedef int8_t   s8;
  45 typedef uint8_t  u8;
  46
  47 typedef int16_t  s16;
  48 typedef uint16_t u16;
  49
  50 typedef int32_t  s32;
  51 typedef uint32_t u32;
  52
  53 typedef int64_t  s64;
  54 typedef uint64_t u64;
  55
  56 /* Limits of integer types */
  57 #define INT8_MIN   ((int8_t)0x80)
  58 #define INT8_MAX   ((int8_t)0x7F)
  59 #define UINT8_MAX  ((uint8_t)0xFF)
  60
  61 #define INT16_MIN  ((int16_t)0x8000)
  62 #define INT16_MAX  ((int16_t)0x7FFF)
  63 #define UINT16_MAX ((uint16_t)0xFFFF)
  64
  65 #define INT32_MIN  ((int32_t)0x80000000)
  66 #define INT32_MAX  ((int32_t)0x7FFFFFFF)
  67 #define UINT32_MAX ((uint32_t)0xFFFFFFFF)
  68
  69 #define INT64_MIN  ((int64_t)0x8000000000000000)
  70 #define INT64_MAX  ((int64_t)0x7FFFFFFFFFFFFFFF)
  71 #define UINT64_MAX ((uint64_t)0xFFFFFFFFFFFFFFFF)
  72
  73 #define INTMAX_MIN  INT64_MIN
  74 #define INTMAX_MAX  INT64_MAX
  75 #define UINTMAX_MAX UINT64_MAX
  76
  77 #endif /* STDINT_H */