bitarray/map over bitarrays/map! for length 63 @test map!(⊻, b, b1, b2) == map!(((x, y)->begin #= /cache/build/default-aws-aarch64-ci-1-0/julialang/julia-master/julia-55f875eab2/share/julia/test/bitarray.jl:1497 =# x ⊻ y end), b, b1, b2) == broadcast(⊻, b1, b2) == broadcast(xor, b1, b2) == b