Question

I need to make some big multiplications for cryptographic reasons in vb.net and overflow the variable as C,C++ and C# does. I have disabled the check of overflow at the vb.net project but when i an doing those multiplications i get as a result 1.#INF

ex. in c:

z^y= 0xFFFFFFFF ^ 0x000003FC= 0xFFFFFC03

in vb.net:

z^y= 0xFFFFFFFF ^ 0x000003FC= 1.#INF

is it possible to be done?

Answer 1

^ in C is Xor in VB and should never be able to overflow.

On the other hand, if you write ^ in VB then this is assumed to be the “power” operation.

Dim z = &HFFFFFFFF
Dim y = &H000003FC
Dim x = z Xor y