bitarray/map over bitarrays/map! for length 256 @test map!(~, b, b1) == map!((x->begin #= /cache/build/tester-amdci5-13/julialang/julia-master/julia-49aecbe42d/share/julia/test/bitarray.jl:1489 =# ~x end), b, b1) == broadcast(~, b1) == b