Names of power-of-two bit operations on bitsets that would not assume any number interpretation
You can think of a bitvector as a set, by giving names to the various bits. For example, if we name the bits in an 8-bit integer using the numbers $0,\ldots,7$ (where $0$ is the LSB and $7$ is the MSB), then $00010010$ is the same as $\{1,4\}$.

Your first function asks whether the set has size $1$. If we name the bits using numbers as above, the second function is maximum and the third is minimum.