Implemented `tridiag_solve` for cubic spline#28

Merged

pasabanov merged 4 commits intomainfrom

Feb 9, 2025

Commits on Feb 3, 2025

Added non-working `tridiag_solve`
pasabanov
committed

Commits on Feb 7, 2025

Unstable "Not-a-knot" cubic spline
pasabanov
committed
Renamed `tridiag_solve` to `tridiag_solve_unstable` and added new stable `tridiag_solve`
pasabanov
committed

Commits on Feb 9, 2025

Modified "Clamped", "FixedSecond" and "FixedThird" cubic splines to use `tridiag_solve`
pasabanov
committed