JuliaDiff / JuliaDiff/ReverseDiff.jl

fma not defined for ReverseDiff.TrackedReal

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Dominant language
Julia
Stars
393
Forks
60
Avg merge
18h 24m
Merged PRs (30d)
8

Description

MWE:

using ReverseDiff
f(x) = fma(x...)
ReverseDiff.gradient(f, zeros(3))

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the supplied MWE and trace how ReverseDiff.gradient handles fma for ReverseDiff.TrackedReal. Confirm the issue is fixed when the example runs successfully without the undefined-method error, and add regression coverage for this case.

Written by the indexing model from the issue text.

Assessment

Tech stack
julia
Domain
backend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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