| fit_rcpp | Predict y from X and b |
| mad_rcpp | Median Absolute Deviation (MAD) |
| median_rcpp | Median |
| psiBS_rcpp | Tukey's Bisquare Psi Function |
| psiHuber_rcpp | Huber Psi Function |
| robustRegBS | Robust Fitting of Linear Models using Bisquare Psi Function |
| robustRegH | Robust Fitting of Linear Models using Huber Psi Function |