[fpc-pascal] Bit manipulation helpers

[gabor]

W dniu 2022-02-21 o 13:18, Ryan Joseph via fpc-pascal pisze:
> Oh my, I was confusing my terms I think. I wanted to do bit masking (I think it's called). I was expecting there to be something like TestFlag in the RTL since I can never remember the syntax "Value = (Value or Index)"
>   
> function TestFlag(Value: QWord; Index: Byte): Boolean;
> begin
>    result := Value = (Value or Index);
> end;

Should you use the "AND" operator instead of "OR" for bit testing?

result := Value = (Value AND Index);

Michał.