bitarray/map over bitarrays/map! for length 128 @test map!(!, b, b1) == map!((x->begin #= /cache/build/tester-amdci5-14/julialang/julia-master/julia-8fd3fb1182/share/julia/test/bitarray.jl:1490 =# !x end), b, b1) == broadcast(~, b1) == b