X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmath%2Fcovariance.h;h=f12e994d52fd6f89d33cbdcb9e5f46e4689d117c;hb=refs%2Fbuilds%2F149%2Fpspp;hp=8b8de88e9fa0b1ebfa277f9d25b41e6bf8e5ed0a;hpb=3bbb4370239deb29ebbf813d258aef6249e2a431;p=pspp

diff --git a/src/math/covariance.h b/src/math/covariance.h
index 8b8de88e9f..f12e994d52 100644
--- a/src/math/covariance.h
+++ b/src/math/covariance.h
@@ -1,5 +1,5 @@
 /* PSPP - a program for statistical analysis.
-   Copyright (C) 2009 Free Software Foundation, Inc.
+   Copyright (C) 2009, 2010 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -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);
+gsl_matrix * covariance_calculate (struct covariance *);
+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