[FEATURE] Integer Logarithms (BSR)

[ArgosOfIthica]

Is your feature request related to a problem? Please describe. Add an integer logarithm operator, similar to Intel's bsr instruction. Adds a lot of utility for certain algorithms.

Describe the solution you'd like An new operator implementing bsr, probably log2.

Describe alternatives you've considered Some unused operator (?>) would also be fine, though I'd like to avoid cryptic names.