I often see source code using types like uint32, uint64 and I wonder if they should be defined by the programmer in the application code or if they are defined in a standard lib header.
What's the best way to have these types on my application source code?
Int64: This Struct is used to represents 64-bit signed integer. The Int64 can store both types of values including negative and positive between the ranges of -9,223,372,036,854,775,808 to +9, 223,372,036,854,775,807. Example : C#
This type is defined in the C header <stdint. h> which is part of the C++11 standard but not standard in C++03. According to the Wikipedia page on the header, it hasn't shipped with Visual Studio until VS2010. Hope this helps!
The UInt32 value type represents unsigned integers with values ranging from 0 to 4,294,967,295. UInt32 provides methods to compare instances of this type, convert the value of an instance to its String representation, and convert the String representation of a number to an instance of this type.
The C99 stdint.h
defines these:
int8_t
int16_t
int32_t
uint8_t
uint16_t
uint32_t
And, if the architecture supports them:
int64_t
uint64_t
There are various other integer typedefs in stdint.h
as well.
If you're stuck without a C99 environment then you should probably supply your own typedefs and use the C99 ones anyway.
The uint32
and uint64
(i.e. without the _t
suffix) are probably application specific.
Those integer types are all defined in stdint.h
If you are using C99 just include stdint.h
. BTW, the 64bit types are there iff the processor supports them.
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