Index: trunk/psLib/src/dataManip/psFunctions.h
===================================================================
--- trunk/psLib/src/dataManip/psFunctions.h	(revision 1831)
+++ trunk/psLib/src/dataManip/psFunctions.h	(revision 1846)
@@ -12,6 +12,6 @@
 *  @author George Gusciora, MHPCC
 *
-*  @version $Revision: 1.23 $ $Name: not supported by cvs2svn $
-*  @date $Date: 2004-09-18 01:50:45 $
+*  @version $Revision: 1.24 $ $Name: not supported by cvs2svn $
+*  @date $Date: 2004-09-22 01:30:21 $
 *
 *  Copyright 2004 Maui High Performance Computing Center, University of Hawaii
@@ -383,7 +383,8 @@
 typedef struct
 {
-    int n;
-    psPolynomial1D **spline;
-    float *domains;
+    int n;                        ///< The number of spline polynomials
+    psPolynomial1D **spline;      ///< An array of n pointers to the spline polynomials
+    float *p_psDeriv2;            ///< For cubic splines, the second derivative at each domain point.  Size is n+1.
+    float *domains;               ///< The boundaries between each spline piece.  Size is n+1.
 }
 psSpline1D;