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Anj/docldlt #13030

Merged
merged 1 commit into from
Sep 11, 2015
Merged

Anj/docldlt #13030

merged 1 commit into from
Sep 11, 2015

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andreasnoack
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The ldltfact documentation was wrong. The other changes ended up here after a rebase so I added them with a new commit. Are they okay to include?

doc"""
ldltfact(A) -> F

Compute an `LDLt` factorization `F` of a `SymTridiagonal` matrix `A` such that `A=L*Diagonal(d)*L'` where `L` is a unit lower triangular matrix and `d` is a vector. The main use of an `LDLt` factorization `F=ldltfact(A)` is to solving the linear system of equations `Ax=b` with `F\b`.
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Would be better to be consistent on whether LDLt is quoted (see the other doc string in helpdb.jl)

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Thanks. I'll fix that.

@kshyatt kshyatt added docs This change adds or pertains to documentation linear algebra Linear algebra labels Sep 9, 2015
@andreasnoack
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Hold on with the comments. I messed up with the build sequence for the docs. Maybe, when you wake up tomorrow, I've managed to contribute to the documentation without breaking anything.

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I think, I had more luck this time so please review. I discovered #13068 while making this change so the two different doc strings won't work before #13068 is fixed, but the html documentation should work.

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tkelman commented Sep 11, 2015

lgtm. So is there no diagonal-D (modified Cholesky) ldltfact for dense symmetric matrices in lapack? Only general-indefinite bkfact?

edit: ref #10953 for adding a generic julia implementation

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Yes. That is correct.

jakebolewski added a commit that referenced this pull request Sep 11, 2015
@jakebolewski jakebolewski merged commit 61195c2 into master Sep 11, 2015
@jakebolewski jakebolewski deleted the anj/docldlt branch September 11, 2015 14:45
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tkelman commented Sep 11, 2015

backport candidate here?

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Yes

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tkelman commented Sep 13, 2015

backported in #13072

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6 participants