#include <gsl/gsl_vector.h>
#include <gsl/gsl_matrix.h>
#include <src/math/coefficient.h>
+#include <math/covariance-matrix.h>
enum
{
/*
Regression using only the covariance matrix.
*/
-void pspp_linreg_with_cov (const struct design_matrix *, pspp_linreg_cache *);
+void pspp_linreg_with_cov (const struct covariance_matrix *, pspp_linreg_cache *);
+double pspp_linreg_mse (const pspp_linreg_cache *);
#endif