NAME¶
stdint.h -
SYNOPSIS¶
Macros¶
#define
__USING_MINT8 0
#define
__CONCATenate(left, right) left ## right
#define
__CONCAT(left, right) __CONCATenate(left, right)
Limits of specified-width integer types
C++ implementations should define these macros only when __STDC_LIMIT_MACROS is
defined before <
stdint.h> is included
#define
INT8_MAX 0x7f
#define
INT8_MIN (-
INT8_MAX - 1)
#define
UINT8_MAX (__CONCAT(
INT8_MAX, U) * 2U + 1U)
#define
INT16_MAX 0x7fff
#define
INT16_MIN (-
INT16_MAX - 1)
#define
UINT16_MAX (__CONCAT(
INT16_MAX, U) * 2U + 1U)
#define
INT32_MAX 0x7fffffffL
#define
INT32_MIN (-
INT32_MAX - 1L)
#define
UINT32_MAX (__CONCAT(
INT32_MAX, U) * 2UL + 1UL)
#define
INT64_MAX 0x7fffffffffffffffLL
#define
INT64_MIN (-
INT64_MAX - 1LL)
#define
UINT64_MAX (__CONCAT(
INT64_MAX, U) * 2ULL + 1ULL)
Limits of minimum-width integer types
#define
INT_LEAST8_MAX INT8_MAX
#define
INT_LEAST8_MIN INT8_MIN
#define
UINT_LEAST8_MAX UINT8_MAX
#define
INT_LEAST16_MAX INT16_MAX
#define
INT_LEAST16_MIN INT16_MIN
#define
UINT_LEAST16_MAX UINT16_MAX
#define
INT_LEAST32_MAX INT32_MAX
#define
INT_LEAST32_MIN INT32_MIN
#define
UINT_LEAST32_MAX UINT32_MAX
#define
INT_LEAST64_MAX INT64_MAX
#define
INT_LEAST64_MIN INT64_MIN
#define
UINT_LEAST64_MAX UINT64_MAX
Limits of fastest minimum-width integer types
#define
INT_FAST8_MAX INT8_MAX
#define
INT_FAST8_MIN INT8_MIN
#define
UINT_FAST8_MAX UINT8_MAX
#define
INT_FAST16_MAX INT16_MAX
#define
INT_FAST16_MIN INT16_MIN
#define
UINT_FAST16_MAX UINT16_MAX
#define
INT_FAST32_MAX INT32_MAX
#define
INT_FAST32_MIN INT32_MIN
#define
UINT_FAST32_MAX UINT32_MAX
#define
INT_FAST64_MAX INT64_MAX
#define
INT_FAST64_MIN INT64_MIN
#define
UINT_FAST64_MAX UINT64_MAX
Limits of integer types capable of holding object pointers
#define
INTPTR_MAX INT16_MAX
#define
INTPTR_MIN INT16_MIN
#define
UINTPTR_MAX UINT16_MAX
Limits of greatest-width integer types
#define
INTMAX_MAX INT64_MAX
#define
INTMAX_MIN INT64_MIN
#define
UINTMAX_MAX UINT64_MAX
Limits of other integer types
C++ implementations should define these macros only when __STDC_LIMIT_MACROS is
defined before <
stdint.h> is included
#define
PTRDIFF_MAX INT16_MAX
#define
PTRDIFF_MIN INT16_MIN
#define
SIG_ATOMIC_MAX INT8_MAX
#define
SIG_ATOMIC_MIN INT8_MIN
#define
SIZE_MAX (__CONCAT(
INT16_MAX, U))
Macros for integer constants
C++ implementations should define these macros only when __STDC_CONSTANT_MACROS
is defined before <
stdint.h> is included.
These definitions are valid for integer constants without suffix and for macros
defined as integer constant without suffix
#define
INT8_C(value) ((
int8_t) value)
#define
UINT8_C(value) ((
uint8_t) __CONCAT(value, U))
#define
INT16_C(value) value
#define
UINT16_C(value) __CONCAT(value, U)
#define
INT32_C(value) __CONCAT(value, L)
#define
UINT32_C(value) __CONCAT(value, UL)
#define
INT64_C(value) __CONCAT(value, LL)
#define
UINT64_C(value) __CONCAT(value, ULL)
#define
INTMAX_C(value) __CONCAT(value, LL)
#define
UINTMAX_C(value) __CONCAT(value, ULL)
Typedefs¶
Exact-width integer types
Integer types having exactly the specified width
typedef signed char
int8_t
typedef unsigned char
uint8_t
typedef signed int
int16_t
typedef unsigned int
uint16_t
typedef signed long int
int32_t
typedef unsigned long int
uint32_t
typedef signed long long int
int64_t
typedef unsigned long long int
uint64_t
Integer types capable of holding object pointers
These allow you to declare variables of the same size as a pointer.
typedef
int16_t intptr_t
typedef
uint16_t uintptr_t
Minimum-width integer types
Integer types having at least the specified width
typedef
int8_t int_least8_t
typedef
uint8_t uint_least8_t
typedef
int16_t int_least16_t
typedef
uint16_t uint_least16_t
typedef
int32_t int_least32_t
typedef
uint32_t uint_least32_t
typedef
int64_t int_least64_t
typedef
uint64_t uint_least64_t
Fastest minimum-width integer types
Integer types being usually fastest having at least the specified width
typedef
int8_t int_fast8_t
typedef
uint8_t uint_fast8_t
typedef
int16_t int_fast16_t
typedef
uint16_t uint_fast16_t
typedef
int32_t int_fast32_t
typedef
uint32_t uint_fast32_t
typedef
int64_t int_fast64_t
typedef
uint64_t uint_fast64_t
Greatest-width integer types
Types designating integer data capable of representing any value of any integer
type in the corresponding signed or unsigned category
typedef
int64_t intmax_t
typedef
uint64_t uintmax_t
Author¶
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