def word_members

bend-collections@1.0.0.0 · src/containers/bitset.bend:117

import Base

117# Indices (from off) of set bits among the low m bits of w, then rest.
118def word_members(m: Nat, +w: U32, +off: Nat, rest: List<&2, Nat>) -> List<&2, Nat>:
119  match m:
120    case 0n:
121      rest
122    case 1n+p:
123      member_pick(low(w), off, word_members(p, U32.shr(w), 1n+off, rest))