Index: trunk/psLib/src/imageops/psImageInterpolate.c
===================================================================
--- trunk/psLib/src/imageops/psImageInterpolate.c	(revision 18298)
+++ trunk/psLib/src/imageops/psImageInterpolate.c	(revision 18299)
@@ -7,6 +7,6 @@
  *  @author Paul Price, IfA
  *
- *  @version $Revision: 1.14 $ $Name: not supported by cvs2svn $
- *  @date $Date: 2008-06-24 02:01:55 $
+ *  @version $Revision: 1.15 $ $Name: not supported by cvs2svn $
+ *  @date $Date: 2008-06-24 02:03:02 $
  *
  *  Copyright 2004-2007 Institute for Astronomy, University of Hawaii
@@ -392,5 +392,5 @@
         double pos = - (num - 1)/2 - frac;  // Position of interest
         for (int i = 0; i < num; i++, pos += 1.0) {
-            norm4 += values[i] = norm1 * sin(pos * norm2) * sin(M_PI_2 * pos * norm3) / PS_SQR(pos);
+            norm4 += values[i] = norm1 * sin(pos * norm2) * sin(pos * norm3) / PS_SQR(pos);
         }
         norm4 = 1.0 / norm4