bitarray/map over bitarrays/map! for length 255 @test map!(^, b, b1, b2) == map!(((x, y)->begin #= C:\buildkite-agent\builds\win2k22-amdci6-6\julialang\julia-master\julia-95d7a20461\share\julia\test\bitarray.jl:1499 =# x ^ y end), b, b1, b2) == b1 .^ b2 == b