LinearAlgebra/addmul/mul!(::LinearAlgebra.Diagonal{BigFloat, V} where V<:AbstractVector{BigFloat}, ::LinearAlgebra.Diagonal{Float64, V} where V<:AbstractVector{Float64}, ::LinearAlgebra.Diagonal{Int64, V} where V<:AbstractVector{Int64}, α, β)/α = 1.0, β = 0.1831852817873126648695603080341243185102939605712890625/β = 0 ignores C .= NaN @test returned_mat === Ccopy