C: XNOR / Exclusive-Nor gate?

Question

I am trying to find the most effective way of writing a XNOR gate in C.

if(VAL1 XNOR VAL2)
{
    BLOCK;
}

Any suggestions?

Thanks.

Answer 1

With two operands this is quite simple:

if (val1 == val2)
{
    block;
}