fix: use Diagonal for diagonal mass matrices
#3615
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| if isdiag(M) | ||
| M = Diagonal(M) | ||
| end |
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It should always be diagonal?
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Technically users can manually create an ODESystem with non-diagonal mass matrix, complete and codegen it.
ChrisRackauckas
approved these changes
May 9, 2025
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Checklist
contributor guidelines, in particular the SciML Style Guide and
COLPRAC.
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