Scipy implements similar algorithms, but delegates the heavy lifting to - you guessed it - Fortran. Example: https://github.com/scipy/scipy/blob/v1.16.1/scipy/i

Scipy implements similar algorithms, but delegates the heavy lifting to - you guessed it - Fortran. Example: https://github.com/scipy/scipy/blob/v1.16.1/scipy/integrate/dop/dopri5.f https://github.com/scipy/scipy/blob/v1.16.1/scipy/integrate/...