X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmath%2Fcovariance.h;h=cb83e151409224d1bf1d982a259179b9e79f5f49;hb=956933cf2545aa67692fd72ef8e4b3e00e524281;hp=8b8de88e9fa0b1ebfa277f9d25b41e6bf8e5ed0a;hpb=3bbb4370239deb29ebbf813d258aef6249e2a431;p=pspp

diff --git a/src/math/covariance.h b/src/math/covariance.h
index 8b8de88e9f..cb83e15140 100644
--- a/src/math/covariance.h
+++ b/src/math/covariance.h
@@ -26,16 +26,27 @@
 struct covariance;
 struct variable;
 struct ccase ;
+struct categoricals;
 
-struct covariance * covariance_create (size_t n_vars, const struct variable **vars, 
-				       const struct variable *wv, enum mv_class excl);
+struct covariance * covariance_1pass_create (size_t n_vars, const struct variable *const *vars, 
+					     const struct variable *wv, enum mv_class excl);
+
+struct covariance *
+covariance_2pass_create (size_t n_vars, const struct variable *const *vars,
+			 struct categoricals *cats,
+			 const struct variable *wv, enum mv_class excl);
 
 void covariance_accumulate (struct covariance *, const struct ccase *);
+void covariance_accumulate_pass1 (struct covariance *, const struct ccase *);
+void covariance_accumulate_pass2 (struct covariance *, const struct ccase *);
 
 const gsl_matrix * covariance_calculate (struct covariance *cov);
+const gsl_matrix * covariance_calculate_unnormalized (struct covariance *);
 
 void covariance_destroy (struct covariance *cov);
 
 const gsl_matrix *covariance_moments (const struct covariance *cov, int m);
 
+const struct categoricals * covariance_get_categoricals (const struct covariance *cov);
+
 #endif