Index: trunk/psLib/src/math/psPolynomialUtils.h
===================================================================
--- trunk/psLib/src/math/psPolynomialUtils.h	(revision 7541)
+++ trunk/psLib/src/math/psPolynomialUtils.h	(revision 10598)
@@ -35,4 +35,6 @@
 psPlane psImageBicubeMin(const psPolynomial2D *poly // The polynomial
                         );
+psPolynomial2D *psPolynomial2D_dX (psPolynomial2D *out, psPolynomial2D *poly);
+psPolynomial2D *psPolynomial2D_dY (psPolynomial2D *out, psPolynomial2D *poly);
 
 #endif /* PS_POLY_UTILS_H */