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lmul! missing for Bidiagonal #51765

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dlfivefifty opened this issue Oct 18, 2023 · 0 comments · Fixed by #51777
Closed

lmul! missing for Bidiagonal #51765

dlfivefifty opened this issue Oct 18, 2023 · 0 comments · Fixed by #51777
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domain:linear algebra Linear algebra

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@dlfivefifty
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Because Bidiagonal are triangular we can and should support in-place multiplication but they are missing:

julia> lmul!(Bidiagonal(randn(5), randn(4), :L), randn(5))
ERROR: MethodError: no method matching lmul!(::Bidiagonal{Float64, Vector{Float64}}, ::Vector{Float64})

Surprisingly ldiv! already works.
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Add lmul! and rmul! for Bidiagonal JuliaLang/julia
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@dlfivefifty @jishnub