JuliaDiff / JuliaDiff/DualNumbers.jl
abs(Dual(-0.0,1.0))
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Description
Perhaps we should have
abs(Dual(-0.0,1.0)) == Dual(0.0,-1.0)?
julia> abs(Dual(0.0,1.0))
0.0 + 1.0du
julia> abs(Dual(-0.0,1.0))
-0.0 + 1.0du
julia> abs(Dual(-eps(),1.0))
2.220446049250313e-16 - 1.0du
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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 locating the Dual abs entry point and compare its behavior with the Julia examples in the issue, especially for -0.0 and -eps(). Done means the behavior for Dual(-0.0, 1.0) is decided and covered consistently with the displayed expected result.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- julia
- Domain
- tooling
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 38/100