Changelog • rxode2lincmt

rxode2lincmt 0.1.1

linCmt() FOCEi fits spend less time per row: the output pass that runs after each solved interval now takes the thin value path instead of restoring the full Jacobian, the AD path copies the requested parameters instead of running the scaling setup, and the value-memo check runs before the rest of the per-row work. Results are bitwise unchanged (#2).

The last-row value memo of linCmt() never hit inside an ‘nlmixr2est’ fit, because ‘nlmixr2est’ leaves the finite-difference step NaN and NaN never equals itself; every repeated call the model makes for a row recomputed it. The memo keys now compare bitwise (#2).

CRAN release: 2026-09-24

Initial release. The analytic one, two and three compartment linear solutions, their ‘stan’ gradients, the eigen decompositions (solComp2(), solComp3()) and the derived-parameter conversions behind rxode2::rxDerived() moved here from ‘rxode2’, so ‘rxode2’ no longer compiles ‘stan’. ‘rxode2’ reaches the compiled kernels through an external-pointer table and hands this package the struct offsets it needs, so neither package shares struct layouts with the other.
The package neither links nor loads the TBB library: the ‘stan’ autodiff tapes are created per thread here, so ‘RcppParallel’ is needed only for its headers.
The closed-form solutions follow the idea of the ‘wnl’ package by Kyun-Seop Bae; the implementation here is different.