def W4.msb.c
import bend-kit-f64@0.1.0.0/f64.bend as F64import Base
376def W4.msb.c(z: Bool, c: U32, +d: U32) -> Maybe<&2, U32>:
377 match z:
378 case False{}:
379 Some{(63 - clz(c) : U32)}
380 case True{}:
381 W4.msb.d(U32.is_zero(d), d)