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Add lmul! and rmul! for Bidiagonal #51777

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merged 7 commits into from
Nov 19, 2023
Merged

Add lmul! and rmul! for Bidiagonal #51777

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1a785c4
Add `lmul!` and `rmul!` for `Bidiagonal`
dkarrasch Oct 19, 2023
149f8db
make `rmul!` aliasing-ready
dkarrasch Oct 25, 2023
7409293
resolve ambiguity
dkarrasch Oct 25, 2023
ae67df4
more disambiguation
dkarrasch Oct 30, 2023
e937c6d
revert size check change
dkarrasch Oct 30, 2023
63b1009
add more tests
dkarrasch Nov 18, 2023
e9b3ac2
Merge branch 'master' into dk/bidiagmul!
dkarrasch Nov 18, 2023
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resolve ambiguity
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@dkarrasch
dkarrasch committed Oct 25, 2023
commit 74092931cd42c8fb675e19e27dc4418b81b92a87
6 changes: 5 additions & 1 deletion stdlib/LinearAlgebra/src/bidiag.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -464,7 +464,11 @@ function _diag(A::Bidiagonal, k)
end
end

function _mul!(C::AbstractMatrix, A::BiTriSym, B::BiTriSym, _add::MulAddMul = MulAddMul())
_mul!(C::AbstractMatrix, A::BiTriSym, B::TriSym, _add::MulAddMul = MulAddMul()) =
_bibimul!(C, A, B, _add)
_mul!(C::AbstractMatrix, A::BiTriSym, B::Bidiagonal, _add::MulAddMul = MulAddMul()) =
_bibimul!(C, A, B, _add)
function _bibimul!(C, A, B, _add)
check_A_mul_B!_sizes(C, A, B)
n = size(A,1)
n <= 3 && return mul!(C, Array(A), Array(B), _add.alpha, _add.beta)
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