No convert(AbstractArray/Array, X) methods for BunchKaufman

[Sacha0]

BunchKaufman lacks convert(Array/Matrix, F) and convert(AbstractArray/AbstractMatrix, F) methods. (Nor has it a full method). Best!

julia> VERSION
v"0.6.0-dev.979"

julia> A = bkfact(Array(SymTridiagonal(fill(2, 4), ones(3))))
Base.LinAlg.BunchKaufman{Float64,Array{Float64,2}}([1.25 0.75 0.0 0.0; 1.0 1.33333 0.666667 0.0; 0.0 1.0 1.5 0.5; 0.0 0.0 1.0 2.0],[1,2,3,4],'U',true,false,0)

julia> Array(A)
ERROR: MethodError: Cannot `convert` an object of type Base.LinAlg.BunchKaufman{Float64,Array{Float64,2}} to an object of type Array{T,N}
This may have arisen from a call to the constructor Array{T,N}(...),
since type constructors fall back to convert methods.
 in Array{T,N}(::Base.LinAlg.BunchKaufman{Float64,Array{Float64,2}}) at ./sysimg.jl:66

julia> AbstractArray(A)
ERROR: MethodError: Cannot `convert` an object of type Base.LinAlg.BunchKaufman{Float64,Array{Float64,2}} to an object of type AbstractArray{T,N}
This may have arisen from a call to the constructor AbstractArray{T,N}(...),
since type constructors fall back to convert methods.
 in AbstractArray{T,N}(::Base.LinAlg.BunchKaufman{Float64,Array{Float64,2}}) at ./sysimg.jl:66

[andreasnoack]

The factors in the Bunch-Kaufman don't separate as nicely as the factors in LU with partial pivoting and the LAPACK have a function for reconstructing the input. It would therefore be a little tedious to write a function which wouldn't be that useful.