X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fmath%2Fcorrelation.h;h=5771f43e71bda48b1a130e51a0f531321be2853e;hb=c1f04750c4430bf3e7f0630842f879ee695b947d;hp=27621c47c9c3219a63fdb71b3a9ad0e275074585;hpb=f550aee00a62fe1d8baf62d83cd7efef6cc2ee92;p=pspp

diff --git a/src/math/correlation.h b/src/math/correlation.h
index 27621c47c9..5771f43e71 100644
--- a/src/math/correlation.h
+++ b/src/math/correlation.h
@@ -20,7 +20,9 @@
 
 #include <gsl/gsl_matrix.h>
 
-gsl_matrix * correlation_from_covariance (const gsl_matrix *cv, const gsl_matrix *v);
+gsl_matrix *correlation_from_covariance (const gsl_matrix *cv, const gsl_matrix *v);
+
+gsl_matrix *covariance_from_correlation (const gsl_matrix *corr, const gsl_matrix *v);
 
 double significance_of_correlation (double rho, double w);