Standard library header <cstdint> (C++11)
From cppreference.com
This header was originally in the C standard library as <stdint.h> .
This header is part of the type support library, providing fixed width integer types and part of C numeric limits interface .
Types |
|
|
int8_t
int16_t
int32_t
int64_t
(optional)
|
signed integer type with width of exactly 8, 16, 32 and 64 bits respectively
with no padding bits and using 2's complement for negative values (provided if and only if the implementation directly supports the type) (typedef) |
|
int_fast8_t
int_fast16_t
int_fast32_t
int_fast64_t
|
fastest signed integer type with width of at least 8, 16, 32 and 64 bits respectively
(typedef) |
|
int_least8_t
int_least16_t
int_least32_t
int_least64_t
|
smallest signed integer type with width of at least 8, 16, 32 and 64 bits respectively
(typedef) |
|
intmax_t
|
maximum-width signed integer type
(typedef) |
|
intptr_t
(optional)
|
signed integer type capable of holding a pointer to
void
(typedef) |
|
uint8_t
uint16_t
uint32_t
uint64_t
(optional)
|
unsigned integer type with width of exactly 8, 16, 32 and 64 bits respectively
(provided if and only if the implementation directly supports the type) (typedef) |
|
uint_fast8_t
uint_fast16_t
uint_fast32_t
uint_fast64_t
|
fastest unsigned integer type with width of at least 8, 16, 32 and 64 bits respectively
(typedef) |
|
uint_least8_t
uint_least16_t
uint_least32_t
uint_least64_t
|
smallest unsigned integer type with width of at least 8, 16, 32 and 64 bits respectively
(typedef) |
|
uintmax_t
|
maximum-width unsigned integer type
(typedef) |
|
uintptr_t
(optional)
|
unsigned integer type capable of holding a pointer to
void
(typedef) |
Macros |
|
Signed integers : minimum value |
|
|
INT8_MIN
INT16_MIN
INT32_MIN
INT64_MIN
(optional)
|
minimum value of
std::int8_t
,
std::int16_t
,
std::int32_t
and
std::int64_t
respectively
(macro constant) |
|
INT_FAST8_MIN
INT_FAST16_MIN
INT_FAST32_MIN
INT_FAST64_MIN
|
minimum value of
std::int_fast8_t
,
std::int_fast16_t
,
std::int_fast32_t
and
std::int_fast64_t
respectively
(macro constant) |
|
INT_LEAST8_MIN
INT_LEAST16_MIN
INT_LEAST32_MIN
INT_LEAST64_MIN
|
minimum value of
std::int_least8_t
,
std::int_least16_t
,
std::int_least32_t
and
std::int_least64_t
respectively
(macro constant) |
|
INTPTR_MIN
(optional)
|
minimum value of
std::intptr_t
(macro constant) |
|
INTMAX_MIN
|
minimum value of
std::intmax_t
(macro constant) |
Signed integers : maximum value |
|
|
INT8_MAX
INT16_MAX
INT32_MAX
INT64_MAX
(optional)
|
maximum value of
std::int8_t
,
std::int16_t
,
std::int32_t
and
std::int64_t
respectively
(macro constant) |
|
INT_FAST8_MAX
INT_FAST16_MAX
INT_FAST32_MAX
INT_FAST64_MAX
|
maximum value of
std::int_fast8_t
,
std::int_fast16_t
,
std::int_fast32_t
and
std::int_fast64_t
respectively
(macro constant) |
|
INT_LEAST8_MAX
INT_LEAST16_MAX
INT_LEAST32_MAX
INT_LEAST64_MAX
|
maximum value of
std::int_least8_t
,
std::int_least16_t
,
std::int_least32_t
and
std::int_least64_t
respectively
(macro constant) |
|
INTPTR_MAX
(optional)
|
maximum value of
std::intptr_t
(macro constant) |
|
INTMAX_MAX
|
maximum value of
std::intmax_t
(macro constant) |
Unsigned integers : maximum value |
|
|
UINT8_MAX
UINT16_MAX
UINT32_MAX
UINT64_MAX
(optional)
|
maximum value of
std::uint8_t
,
std::uint16_t
,
std::uint32_t
and
std::uint64_t
respectively
(macro constant) |
|
UINT_FAST8_MAX
UINT_FAST16_MAX
UINT_FAST32_MAX
UINT_FAST64_MAX
|
maximum value of
std::uint_fast8_t
,
std::uint_fast16_t
,
std::uint_fast32_t
and
std::uint_fast64_t
respectively
(macro constant) |
|
UINT_LEAST8_MAX
UINT_LEAST16_MAX
UINT_LEAST32_MAX
UINT_LEAST64_MAX
|
maximum value of
std::uint_least8_t
,
std::uint_least16_t
,
std::uint_least32_t
and
std::uint_least64_t
respectively
(macro constant) |
|
UINTPTR_MAX
(optional)
|
maximum value of
std::uintptr_t
(macro constant) |
|
UINTMAX_MAX
|
maximum value of
std::uintmax_t
(macro constant) |
Limits of other integer types |
|
|
PTRDIFF_MIN
(C++11)
|
minimum value of
std::ptrdiff_t
(macro constant) |
|
PTRDIFF_MAX
(C++11)
|
maximum value of
std::ptrdiff_t
(macro constant) |
|
SIZE_MAX
(C++11)
|
maximum value of
std::size_t
(macro constant) |
|
SIG_ATOMIC_MIN
(C++11)
|
minimum value of
std::sig_atomic_t
(macro constant) |
|
SIG_ATOMIC_MAX
(C++11)
|
maximum value of
std::sig_atomic_t
(macro constant) |
|
WCHAR_MIN
(C++11)
|
minimum value of
wchar_t
(macro constant) |
|
WCHAR_MAX
(C++11)
|
maximum value of
wchar_t
(macro constant) |
|
WINT_MIN
(C++11)
|
minimum value of
std::wint_t
(macro constant) |
|
WINT_MAX
(C++11)
|
maximum value of
std::wint_t
(macro constant) |
Function macros for integer constants |
|
|
INT8_C
INT16_C
INT32_C
INT64_C
|
expands to an integer constant expression having the value specified by its argument and whose type is the
promoted
type of
std::int_least8_t
,
std::int_least16_t
,
std::int_least32_t
and
std::int_least64_t
respectively
(function macro) |
|
INTMAX_C
|
expands to an integer constant expression having the value specified by its argument and the type
std::intmax_t
(function macro) |
|
UINT8_C
UINT16_C
UINT32_C
UINT64_C
|
expands to an integer constant expression having the value specified by its argument and whose type is the
promoted
type of
std::uint_least8_t
,
std::uint_least16_t
,
std::uint_least32_t
and
std::uint_least64_t
respectively
(function macro) |
|
UINTMAX_C
|
expands to an integer constant expression having the value specified by its argument and the type
std::uintmax_t
(function macro) |
Synopsis
namespace std { using int8_t = /* signed integer type */; // optional using int16_t = /* signed integer type */; // optional using int32_t = /* signed integer type */; // optional using int64_t = /* signed integer type */; // optional using intN_t = /* see description */; // optional, see description using int_fast8_t = /* signed integer type */; using int_fast16_t = /* signed integer type */; using int_fast32_t = /* signed integer type */; using int_fast64_t = /* signed integer type */; using int_fastN_t = /* see description */; // optional, see description using int_least8_t = /* signed integer type */; using int_least16_t = /* signed integer type */; using int_least32_t = /* signed integer type */; using int_least64_t = /* signed integer type */; using int_leastN_t = /* see description */; // optional, see description using intmax_t = /* signed integer type */; using intptr_t = /* signed integer type */; // optional using uint8_t = /* unsigned integer type */; // optional using uint16_t = /* unsigned integer type */; // optional using uint32_t = /* unsigned integer type */; // optional using uint64_t = /* unsigned integer type */; // optional using uintN_t = /* see description */; // optional, see description using uint_fast8_t = /* unsigned integer type */; using uint_fast16_t = /* unsigned integer type */; using uint_fast32_t = /* unsigned integer type */; using uint_fast64_t = /* unsigned integer type */; using uint_fastN_t = /* see description */; // optional, see description using uint_least8_t = /* unsigned integer type */; using uint_least16_t = /* unsigned integer type */; using uint_least32_t = /* unsigned integer type */; using uint_least64_t = /* unsigned integer type */; using uint_leastN_t = /* see description */; // optional, see description using uintmax_t = /* unsigned integer type */; using uintptr_t = /* unsigned integer type */; // optional } #define INTN_MIN /* see description */ #define INTN_MAX /* see description */ #define UINTN_MAX /* see description */ #define INT_FASTN_MIN /* see description */ #define INT_FASTN_MAX /* see description */ #define UINT_FASTN_MAX /* see description */ #define INT_LEASTN_MIN /* see description */ #define INT_LEASTN_MAX /* see description */ #define UINT_LEASTN_MAX /* see description */ #define INTMAX_MIN /* see description */ #define INTMAX_MAX /* see description */ #define UINTMAX_MAX /* see description */ #define INTPTR_MIN /* see description */ // optional #define INTPTR_MAX /* see description */ // optional #define UINTPTR_MAX /* see description */ // optional #define PTRDIFF_MIN /* see description */ #define PTRDIFF_MAX /* see description */ #define SIZE_MAX /* see description */ #define SIG_ATOMIC_MIN /* see description */ #define SIG_ATOMIC_MAX /* see description */ #define WCHAR_MIN /* see description */ #define WCHAR_MAX /* see description */ #define WINT_MIN /* see description */ #define WINT_MAX /* see description */ #define INTN_C(value) /* see description */ #define UINTN_C(value) /* see description */ #define INTMAX_C(value) /* see description */ #define UINTMAX_C(value) /* see description */