Question Is there a preprocessor to calculate pointer size?

[loveandkindess]

This is my code in C:
#if UINTPTR_MAX == 0xFFFFu
typedef uint16_t GRAINS_UINTPTR;
#elif UINTPTR_MAX == 0xFFFFFFFFu
typedef uint32_t GRAINS_UINTPTR;
#elif UINTPTR_MAX == 0xFFFFFFFFFFFFFFFFu
typedef uint64_t GRAINS_UINTPTR;
#endif
How would one do this in C#?

 

[Skydiver]

No. The C# #if only checks for symbols being defined or not defiend. It cannot (currently) check for values, since C# symbol definitions only create entries in the symbol table -- they don't define values.

Just use the UIntPtr struct. It will be the correct size for your compilation target.

UIntPtr Struct (System)

Represents an unsigned integer where the bit-width is the same as a pointer.

learn.microsoft.com

 

[Skydiver]

And then you can use a using alias to do:

using GrainsUIntPtr = System.UIntPtr;

See

The using directive: Import types from a namespace - C# reference

The `using` directive imports types from a namespace, or creates an alias for a given type. Using directives enable you to use simple names for types instead of the fully qualified type name.

learn.microsoft.com