Can this boolean if-else statement be turned into a one-line expression?

Question

Can the following code be optimized any further (ie can it be turned into a one-line expression), through some bit-wise operation or something else?

if(A_BOOL_VARIABLE)
    return (A == B);
else
    return (A != B);

Note: A and B are not bool type here.

Answer 1

return A_BOOL_VARIABLE == (A == B);

Truth table:

A_BOOL_VARIABLE  (A == B)   Result
    T               T         T
    T               F         F
    F               T         F
    F               F         T

Which is the same as your original if..else .

Answer 2

Not bitwise, but a simple boolean XOR:

return A_BOOL_VARIABLE ^ (A!=B);

Here I suppose that A==B = !(A!=B) .

Answer 3

Renaming your A_BOOL_VARIABLE to C for the sake of brevity, the truth table is:

C A B   Result

0 0 0   0 \
0 0 1   1 |  == A ^ B  (C=0)
0 1 0   1 |
0 1 1   0 /

1 0 0   1 \
1 0 1   0 |  == ! (A ^ B)    (C=1)
1 1 0   0 |
1 1 1   1 /

So the final expression could be: A ^ B ^ C where ^ is exclusive or.