Methods for calculating (usually) accurate numerical first and second order derivatives. Accurate calculations are done using 'Richardson''s' extrapolation or, when applicable, a complex step derivative is available. A simple difference method is also provided. Simple difference is (usually) less accurate but is much quicker than 'Richardson''s' extrapolation and provides a useful cross-check. Methods are provided for real scalar and vector valued functions.
copied from cf-staging / r-numderiv
conda install conda-forge::r-numderivconda install conda-forge/label/cf201901::r-numderivconda install conda-forge/label/cf202003::r-numderivconda install conda-forge/label/gcc7::r-numderiv