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Small bug

Open Beginner friendly
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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
72/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Active
Tech stack
fortran
Domain
backend

Research direction

Start at micro_pumas_utils.F90 line 379 and compare the expression with commit 5434e2b009295889f073ffb0df8649605199b09d. Check whether the denominator should use 2*dcs as described in the issue, then assess whether the change affects numerical results. Done means the calculation matches the intended formula and the result impact is documented.

Written by the indexing model from the issue text.

Description

I'm working on integrating PUMAS into clubb and had ChatGPT audit our implementation from a physics standpoint, and it flagged a problem with this line

https://github.com/ESCOMP/PUMAS/blob/e7377aeeff15acf28c8edf42e9c50b6e89f7de11/micro_pumas_utils.F90#L379

Aparently this should be calculation 1 / ( 2 *dcs ).

It looks like the bug was introduced in this commit 5434e2b009295889f073ffb0df8649605199b09d.

I'm not sure if this affects numerical results, but I thought I'd document it here quickly.

Dominant language
Fortran
Stars
12
Forks
24
PR merge metrics
No merged PRs in 30d

Getting set up

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First steps

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  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.

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