[fpc-devel] Cardinal = LongWord on 64bit systems?

[Henrick Hellström]

Graeme Geldenhuys wrote:
> On 15/10/2009, Mattias Gaertner <nc-gaertnma at netcologne.de> wrote:
>   
>> PtrUInt
>>     
>
> So what is the difference between PtrUint and ValUInt? Where would you use each?
>   
* Use PtrUInt when casting pointers to integers and back.
* Use ValUInt when performing operations that would benefit from using 
the largest integer type supported by the CPU. For instance, if you are 
going to xor a large chunk of memory with a constant bit pattern, it is 
most efficient to treat that memory as an array of ValUInt.
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