X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmath%2Flinreg.h;h=f9d8c9b3f740abfc161ea7df2ecf20131985f700;hb=45fb19608ffa759f7a0221878d1a9a72c6727dc7;hp=5a5c4c8eb3e8db543b1db068ae5670dd6f62f1da;hpb=b4fdd51a0bf62800c53c8a805f31ea735d931029;p=pspp-builds.git

diff --git a/src/math/linreg.h b/src/math/linreg.h
index 5a5c4c8e..f9d8c9b3 100644
--- a/src/math/linreg.h
+++ b/src/math/linreg.h
@@ -21,6 +21,7 @@
 #include <gsl/gsl_vector.h>
 #include <gsl/gsl_matrix.h>
 #include <src/math/coefficient.h>
+#include <math/covariance-matrix.h>
 
 enum
 {
@@ -199,7 +200,7 @@ pspp_linreg_residual (const struct variable **, const union value **,
 /*
   All variables used in the model.
  */
-int pspp_linreg_get_vars (const void *, struct variable **);
+int pspp_linreg_get_vars (const void *, const struct variable **);
 
 struct pspp_coeff *pspp_linreg_get_coeff (const pspp_linreg_cache
 						       *,
@@ -216,4 +217,10 @@ void pspp_linreg_set_indep_variable_sd (pspp_linreg_cache *, const struct variab
  */
 double pspp_linreg_get_indep_variable_mean (pspp_linreg_cache *, const struct variable *);
 void pspp_linreg_set_indep_variable_mean (pspp_linreg_cache *, const struct variable *, double);
+
+/*
+  Regression using only the covariance matrix.
+ */
+void pspp_linreg_with_cov (const struct covariance_matrix *, pspp_linreg_cache *);
+double pspp_linreg_mse (const pspp_linreg_cache *);
 #endif