JuliaLang/julia — pull request #7077 by simonbyrne (2014-06-02 10:35:04+00:00)
Title: Separate types for LU and LUTridiagonal.

Also removes redundant `du2` vector from `Tridiagonal` type. This makes `LU` more consistent with other `Factorization` types.

cc: @andreasnoackjensen