Index: trunk/psLib/src/dataManip/psFunctions.c
===================================================================
--- trunk/psLib/src/dataManip/psFunctions.c	(revision 773)
+++ trunk/psLib/src/dataManip/psFunctions.c	(revision 774)
@@ -234,4 +234,5 @@
     float xSum = 1.0;
 
+    // GUS: Do we want to flag this case?
     if (myPoly->n == 0) {
         return(1.0);
@@ -259,5 +260,5 @@
 
     for (loop_x=0;loop_x<myPoly->nX;loop_x++) {
-        xSum = xSum;
+        ySum = xSum;
         for (loop_y=0;loop_y<myPoly->nY;loop_y++) {
             polySum+= ySum * myPoly->coeff[loop_x][loop_y];
@@ -523,4 +524,5 @@
     double xSum = 1.0;
 
+    // GUS: Do we want to flag this case?
     if (myPoly->n == 0) {
         return(1.0);
@@ -548,5 +550,5 @@
 
     for (loop_x=0;loop_x<myPoly->nX;loop_x++) {
-        xSum = xSum;
+        ySum = xSum;
         for (loop_y=0;loop_y<myPoly->nY;loop_y++) {
             polySum+= ySum * myPoly->coeff[loop_x][loop_y];