JuliaArrays / JuliaArrays/StaticArrays.jl
All dispatches of static arrays with factorizations are missing
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- Dominant language
- Julia
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- Avg merge
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Description
For example, while you can build the lu(A), every use of it errors:
using StaticArrays, LinearAlgebra
A = @SMatrix rand(3,3)
Alu = lu(A)
c = rand(3)
b = rand(3)
Alu \ b
Alu / b
ldiv!(c,Alu,b)
b = @SVector rand(3)
Alu \ b
Alu / b
ldiv!(c,Alu,b)
b = @MVector rand(3)
Alu \ b
Alu / b
ldiv!(c,Alu,b)
c = @MVector rand(3)
b = rand(3)
Alu \ b
Alu / b
ldiv!(c,Alu,b)
b = @SVector rand(3)
Alu \ b
Alu / b
ldiv!(c,Alu,b)
b = @MVector rand(3)
Alu \ b
Alu / b
ldiv!(c,Alu,b)
This is likely true for the other factorizations as well. Quick test:
Alu = qr(A)
c = rand(3)
b = rand(3)
Alu \ b
There should be a way to programmatically do this and copy Base.
xref: https://github.com/JuliaDiffEq/DifferentialEquations.jl/issues/339
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the Julia examples for lu(A), qr(A), , /, and ldiv! with the shown StaticArrays vector types. Inspect the dispatches for factorization operations and verify that the listed combinations, along with the other factorizations mentioned, work consistently when done.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- julia
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100