Question

I need to combine an int with a void*. I was thinking of doing it like :

long int lint = ((int)integer<<(sizeof(void*)*8)) | ((void*)ptr);

but according to my previous message, a long int won’t suffice.

Can anyone suggest how to do this?

PS. Some people will ask why on earth I might want to do this. Well, I am developing a generic events system (dispatch/listen) that caters for countless different cases. I will post code when it’s ready…

Answer 1

Hmm shouldn’t it be something like:

long long res = ((long long)integer<<(sizeof(void*))) | ((long long)ptr);

Thit will still only work for 32 bit pointers and will not work for 64 bit. There is no built-in type that will fit such arithmetics.