| IRCcheck-package | IRCcheck: Irrepresentable Condition Check |
| constrained | Constrained Precision Matrix |
| gen_net | Generate True Partial Correlation Matrix |
| irc_ggm | Irrepresentable Condition: Gaussian Graphical Model |
| irc_regression | Irrepresentable Condition: Regression |
| symm_mat | Symmetric Matrix Copy the upper triangular of a matrix into the lower triangular portion of the matrix. |