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<stdint.h>: Standard Integer Types(3avr) | avr-libc | <stdint.h>: Standard Integer Types(3avr) |
NAME¶
<stdint.h>: Standard Integer Types -Exact-width integer types¶
Integer types having exactly the specified widthtypedef signed char int8_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
Minimum-width integer types¶
Integer types having at least the specified widthtypedef int8_t int_least8_t
Fastest minimum-width integer types¶
Integer types being usually fastest having at least the specified widthtypedef int8_t int_fast8_t
Greatest-width integer types¶
Types designating integer data capable of representing any value of any integer type in the corresponding signed or unsigned categorytypedef int64_t intmax_t
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
Limits of minimum-width integer types¶
#define INT_LEAST8_MAX INT8_MAX
Limits of fastest minimum-width integer types¶
#define INT_FAST8_MAX INT8_MAX
Limits of integer types capable of holding object pointers¶
#define INTPTR_MAX INT16_MAX
Limits of greatest-width integer types¶
#define INTMAX_MAX INT64_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
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)
Detailed Description¶
#include <stdint.h>Use [u]intN_t if you need exactly N bits. Since these typedefs are mandated by the C99 standard, they are preferred over rolling your own typedefs.
Macro Definition Documentation¶
#define INT16_C(value) value¶
define a constant of type int16_t#define INT16_MAX 0x7fff¶
largest positive value an int16_t can hold.#define INT16_MIN (- INT16_MAX - 1)¶
smallest negative value an int16_t can hold.#define INT32_C(value) __CONCAT(value, L)¶
define a constant of type int32_t#define INT32_MAX 0x7fffffffL¶
largest positive value an int32_t can hold.#define INT32_MIN (- INT32_MAX - 1L)¶
smallest negative value an int32_t can hold.#define INT64_C(value) __CONCAT(value, LL)¶
define a constant of type int64_t#define INT64_MAX 0x7fffffffffffffffLL¶
largest positive value an int64_t can hold.#define INT64_MIN (- INT64_MAX - 1LL)¶
smallest negative value an int64_t can hold.#define INT8_C(value) (( int8_t) value)¶
define a constant of type int8_t#define INT8_MAX 0x7f¶
largest positive value an int8_t can hold.#define INT8_MIN (- INT8_MAX - 1)¶
smallest negative value an int8_t can hold.#define INT_FAST16_MAX INT16_MAX¶
largest positive value an int_fast16_t can hold.#define INT_FAST16_MIN INT16_MIN¶
smallest negative value an int_fast16_t can hold.#define INT_FAST32_MAX INT32_MAX¶
largest positive value an int_fast32_t can hold.#define INT_FAST32_MIN INT32_MIN¶
smallest negative value an int_fast32_t can hold.#define INT_FAST64_MAX INT64_MAX¶
largest positive value an int_fast64_t can hold.#define INT_FAST64_MIN INT64_MIN¶
smallest negative value an int_fast64_t can hold.#define INT_FAST8_MAX INT8_MAX¶
largest positive value an int_fast8_t can hold.#define INT_FAST8_MIN INT8_MIN¶
smallest negative value an int_fast8_t can hold.#define INT_LEAST16_MAX INT16_MAX¶
largest positive value an int_least16_t can hold.#define INT_LEAST16_MIN INT16_MIN¶
smallest negative value an int_least16_t can hold.#define INT_LEAST32_MAX INT32_MAX¶
largest positive value an int_least32_t can hold.#define INT_LEAST32_MIN INT32_MIN¶
smallest negative value an int_least32_t can hold.#define INT_LEAST64_MAX INT64_MAX¶
largest positive value an int_least64_t can hold.#define INT_LEAST64_MIN INT64_MIN¶
smallest negative value an int_least64_t can hold.#define INT_LEAST8_MAX INT8_MAX¶
largest positive value an int_least8_t can hold.#define INT_LEAST8_MIN INT8_MIN¶
smallest negative value an int_least8_t can hold.#define INTMAX_C(value) __CONCAT(value, LL)¶
define a constant of type intmax_t#define INTMAX_MAX INT64_MAX¶
largest positive value an intmax_t can hold.#define INTMAX_MIN INT64_MIN¶
smallest negative value an intmax_t can hold.#define INTPTR_MAX INT16_MAX¶
largest positive value an intptr_t can hold.#define INTPTR_MIN INT16_MIN¶
smallest negative value an intptr_t can hold.#define PTRDIFF_MAX INT16_MAX¶
largest positive value a ptrdiff_t can hold.#define PTRDIFF_MIN INT16_MIN¶
smallest negative value a ptrdiff_t can hold.#define SIG_ATOMIC_MAX INT8_MAX¶
largest positive value a sig_atomic_t can hold.#define SIG_ATOMIC_MIN INT8_MIN¶
smallest negative value a sig_atomic_t can hold.#define SIZE_MAX (__CONCAT( INT16_MAX, U))¶
largest value a size_t can hold.#define UINT16_C(value) __CONCAT(value, U)¶
define a constant of type uint16_t#define UINT16_MAX (__CONCAT( INT16_MAX, U) * 2U + 1U)¶
largest value an uint16_t can hold.#define UINT32_C(value) __CONCAT(value, UL)¶
define a constant of type uint32_t#define UINT32_MAX (__CONCAT( INT32_MAX, U) * 2UL + 1UL)¶
largest value an uint32_t can hold.#define UINT64_C(value) __CONCAT(value, ULL)¶
define a constant of type uint64_t#define UINT64_MAX (__CONCAT( INT64_MAX, U) * 2ULL + 1ULL)¶
largest value an uint64_t can hold.#define UINT8_C(value) (( uint8_t) __CONCAT(value, U))¶
define a constant of type uint8_t#define UINT8_MAX (__CONCAT( INT8_MAX, U) * 2U + 1U)¶
largest value an uint8_t can hold.#define UINT_FAST16_MAX UINT16_MAX¶
largest value an uint_fast16_t can hold.#define UINT_FAST32_MAX UINT32_MAX¶
largest value an uint_fast32_t can hold.#define UINT_FAST64_MAX UINT64_MAX¶
largest value an uint_fast64_t can hold.#define UINT_FAST8_MAX UINT8_MAX¶
largest value an uint_fast8_t can hold.#define UINT_LEAST16_MAX UINT16_MAX¶
largest value an uint_least16_t can hold.#define UINT_LEAST32_MAX UINT32_MAX¶
largest value an uint_least32_t can hold.#define UINT_LEAST64_MAX UINT64_MAX¶
largest value an uint_least64_t can hold.#define UINT_LEAST8_MAX UINT8_MAX¶
largest value an uint_least8_t can hold.#define UINTMAX_C(value) __CONCAT(value, ULL)¶
define a constant of type uintmax_t#define UINTMAX_MAX UINT64_MAX¶
largest value an uintmax_t can hold.#define UINTPTR_MAX UINT16_MAX¶
largest value an uintptr_t can hold.Typedef Documentation¶
typedef signed int int16_t¶
16-bit signed type.typedef signed long int int32_t¶
32-bit signed type.typedef signed long long int int64_t¶
64-bit signed type. Note:This type is not available when the compiler option
-mint8 is in effect.
typedef signed char int8_t¶
8-bit signed type.typedef int16_t int_fast16_t¶
fastest signed int with at least 16 bits.typedef int32_t int_fast32_t¶
fastest signed int with at least 32 bits.typedef int64_t int_fast64_t¶
fastest signed int with at least 64 bits. Note:This type is not available when the compiler option
-mint8 is in effect.
typedef int8_t int_fast8_t¶
fastest signed int with at least 8 bits.typedef int16_t int_least16_t¶
signed int with at least 16 bits.typedef int32_t int_least32_t¶
signed int with at least 32 bits.typedef int64_t int_least64_t¶
signed int with at least 64 bits. Note:This type is not available when the compiler option
-mint8 is in effect.
typedef int8_t int_least8_t¶
signed int with at least 8 bits.typedef int64_t intmax_t¶
largest signed int available.typedef int16_t intptr_t¶
Signed pointer compatible type.typedef unsigned int uint16_t¶
16-bit unsigned type.typedef unsigned long int uint32_t¶
32-bit unsigned type.typedef unsigned long long int uint64_t¶
64-bit unsigned type. Note:This type is not available when the compiler option
-mint8 is in effect.
typedef unsigned char uint8_t¶
8-bit unsigned type.typedef uint16_t uint_fast16_t¶
fastest unsigned int with at least 16 bits.typedef uint32_t uint_fast32_t¶
fastest unsigned int with at least 32 bits.typedef uint64_t uint_fast64_t¶
fastest unsigned int with at least 64 bits. Note:This type is not available when the compiler option
-mint8 is in effect.
typedef uint8_t uint_fast8_t¶
fastest unsigned int with at least 8 bits.typedef uint16_t uint_least16_t¶
unsigned int with at least 16 bits.typedef uint32_t uint_least32_t¶
unsigned int with at least 32 bits.typedef uint64_t uint_least64_t¶
unsigned int with at least 64 bits. Note:This type is not available when the compiler option
-mint8 is in effect.
typedef uint8_t uint_least8_t¶
unsigned int with at least 8 bits.typedef uint64_t uintmax_t¶
largest unsigned int available.typedef uint16_t uintptr_t¶
Unsigned pointer compatible type.Author¶
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