Types
| Defined in header <cstdint> | |
|---|---|
| int8_tint16_tint32_tint64_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 only if the implementation directly supports the type) (typedef) |
| int_fast8_tint_fast16_tint_fast32_tint_fast64_t | fastest signed integer type with width of at least 8, 16, 32 and 64 bits respectively (typedef) |
| int_least8_tint_least16_tint_least32_tint_least64_t | smallest signed integer type with width of at least 8, 16, 32 and 64 bits respectively (typedef) |
| intmax_t | maximum width integer type (typedef) |
| intptr_t (optional) | integer type capable of holding a pointer (typedef) |
| uint8_tuint16_tuint32_tuint64_t (optional) | unsigned integer type with width of exactly 8, 16, 32 and 64 bits respectively (provided only if the implementation directly supports the type) (typedef) |
| uint_fast8_tuint_fast16_tuint_fast32_tuint_fast64_t | fastest unsigned integer type with width of at least 8, 16, 32 and 64 bits respectively (typedef) |
| uint_least8_tuint_least16_tuint_least32_tuint_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 (typedef) |
Macro constants
| Defined in header <cstdint> | |
|---|---|
Signed integers : minimum value | |
| INT8_MININT16_MININT32_MININT64_MIN | minimum value of an object of type int8_t, int16_t, int32_t, int64_t (macro constant) |
| INT_FAST8_MININT_FAST16_MININT_FAST32_MININT_FAST64_MIN | minimum value of an object of type int_fast8_t, int_fast16_t, int_fast32_t, int_fast64_t (macro constant) |
| INT_LEAST8_MININT_LEAST16_MININT_LEAST32_MININT_LEAST64_MIN | minimum value of an object of type int_least8_t, int_least16_t, int_least32_t, int_least64_t (macro constant) |
| INTPTR_MIN | minimum value of an object of type intptr_t (macro constant) |
| INTMAX_MIN | minimum value of an object of type intmax_t (macro constant) |
Signed integers : maximum value | |
| INT8_MAXINT16_MAXINT32_MAXINT64_MAX | maximum value of an object of type int8_t, int16_t, int32_t, int64_t (macro constant) |
| INT_FAST8_MAXINT_FAST16_MAXINT_FAST32_MAXINT_FAST64_MAX | maximum value of an object of type int_fast8_t, int_fast16_t, int_fast32_t, int_fast64_t (macro constant) |
| INT_LEAST8_MAXINT_LEAST16_MAXINT_LEAST32_MAXINT_LEAST64_MAX | maximum value of an object of type int_least8_t, int_least16_t, int_least32_t, int_least64_t (macro constant) |
| INTPTR_MAX | maximum value of an object of type intptr_t (macro constant) |
| INTMAX_MAX | maximum value of an object of type intmax_t (macro constant) |
Unsigned integers : maximum value | |
| UINT8_MAXUINT16_MAXUINT32_MAXUINT64_MAX | maximum value of an object of type uint8_t, uint16_t, uint32_t, uint64_t (macro constant) |
| UINT_FAST8_MAXUINT_FAST16_MAXUINT_FAST32_MAXUINT_FAST64_MAX | maximum value of an object of type uint_fast8_t, uint_fast16_t, uint_fast32_t, uint_fast64_t (macro constant) |
| UINT_LEAST8_MAXUINT_LEAST16_MAXUINT_LEAST32_MAXUINT_LEAST64_MAX | maximum value of an object of type uint_least8_t, uint_least16_t, uint_least32_t, uint_least64_t (macro constant) |
| UINTPTR_MAX | maximum value of an object of type uintptr_t (macro constant) |
| UINTMAX_MAX | maximum value of an object of type uintmax_t (macro constant) |
Function macros for minimum-width integer constants
| INT8_CINT16_CINT32_CINT64_C | expands to an integer constant expression having the value specified by its argument and the type int_least8_t, int_least16_t, int_least32_t, int_least64_t respectively (function macro) |
| INTMAX_C | expands to an integer constant expression having the value specified by its argument and the type intmax_t (function macro) |
| UINT8_CUINT16_CUINT32_CUINT64_C | expands to an integer constant expression having the value specified by its argument and the type uint_least8_t, uint_least16_t, uint_least32_t, uint_least64_t respectively (function macro) |
| UINTMAX_C | expands to an integer constant expression having the value specified by its argument and the type uintmax_t (function macro) |
#include <cstdint> UINT64_C(0x123) // expands to 0x123ULL
Format macro constants
| Defined in header <cinttypes> |
|---|
Format constants for the std::fprintf family of functions
| Equivalent for int orunsigned int | Description | Macros for data types | ||||
|---|---|---|---|---|---|---|
std::intx_t | std::int_leastx_t | std::int_fastx_t | std::intmax_t | std::intptr_t | ||
| x = 8, 16, 32 or 64 | ||||||
%d | output of a signed decimal integer value | PRIdx | PRIdLEASTx | PRIdFASTx | PRIdMAX | PRIdPTR |
%i | PRIix | PRIiLEASTx | PRIiFASTx | PRIiMAX | PRIiPTR | |
%u | output of an unsigned decimal integer value | PRIux | PRIuLEASTx | PRIuFASTx | PRIuMAX | PRIuPTR |
%o | output of an unsigned octal integer value | PRIox | PRIoLEASTx | PRIoFASTx | PRIoMAX | PRIoPTR |
%x | output of an unsigned lowercase hexadecimal integer value | PRIxx | PRIxLEASTx | PRIxFASTx | PRIxMAX | PRIxPTR |
%X | output of an unsigned uppercase hexadecimal integer value | PRIXx | PRIXLEASTx | PRIXFASTx | PRIXMAX | PRIXPTR |
Format constants for the std::fscanf family of functions
| Equivalent for int orunsigned int | Description | Macros for data types | ||||
|---|---|---|---|---|---|---|
std::intx_t | std::int_leastx_t | std::int_fastx_t | std::intmax_t | std::intptr_t | ||
| x = 8, 16, 32 or 64 | ||||||
%d | input of a signed decimal integer value | SCNdx | SCNdLEASTx | SCNdFASTx | SCNdMAX | SCNdPTR |
%i | SCNix | SCNiLEASTx | SCNiFASTx | SCNiMAX | SCNiPTR | |
%u | input of an unsigned decimal integer value | SCNux | SCNuLEASTx | SCNuFASTx | SCNuMAX | SCNuPTR |
%o | input of an unsigned octal integer value | SCNox | SCNoLEASTx | SCNoFASTx | SCNoMAX | SCNoPTR |
%x | input of an unsigned lowercase hexadecimal integer value | SCNxx | SCNxLEASTx | SCNxFASTx | SCNxMAX | SCNxPTR |
%X | input of an unsigned uppercase hexadecimal integer value | SCNXx | SCNXLEASTx | SCNXFASTx | SCNXMAX | SCNXPTR |
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