def ba.fs
import bend-osdev-algo@0.1.0.0/PROOF.bend as PROOFimport Base
import bend-osdev-algo@0.1.0.0/bsearch.bend as S
1421def ba.fs(c: Bool, -a0: Array<U32>, -x: U32, +r: U32, +key: U32) -> {Pair.fst(Array<U32>, Maybe<&2, U32>, S.bsearch.array.found(c, (a0, x), r, key)) == a0 : Array<U32>}:
1422 match c:
1423 case True{}:
1424 {==}
1425 case False{}:
1426 {==}