Forward M1/M2, DIMOFIND*, and mass matrix through radau5/radau SciML …#90
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ChrisRackauckas merged 1 commit intoSciML:masterfrom Mar 9, 2026
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This PR enables passing RADAU5-specific options through the standard SciML solve interface.
It allows users to provide:
M1, M2 (block structure for Hessenberg DAEs)
DIMOFIND1VAR, DIMOFIND2VAR, DIMOFIND3VAR (DAE index dimensions)
massmatrix directly via the algorithm
Changes
Added new fields to radau5 and radau algorithm structs
Added forwarding logic in solve to inject algorithm fields into ODEInterface options
Fixed typo in option list (DIMFIND1VAR → DIMOFIND1VAR)
Preserved backward compatibility (all tests pass)