Index: trunk/psLib/src/astro/psSphereOps.h
===================================================================
--- trunk/psLib/src/astro/psSphereOps.h	(revision 5319)
+++ trunk/psLib/src/astro/psSphereOps.h	(revision 5437)
@@ -7,6 +7,6 @@
  *  @author Robert DeSonia, MHPCC
  *
- *  @version $Revision: 1.5 $ $Name: not supported by cvs2svn $
- *  @date $Date: 2005-10-14 00:07:37 $
+ *  @version $Revision: 1.6 $ $Name: not supported by cvs2svn $
+ *  @date $Date: 2005-10-21 02:14:02 $
  *
  *  Copyright 2004-2005 Maui High Performance Computing Center, University of Hawaii
@@ -122,10 +122,27 @@
 );
 
+/** Returns the conjugate of a specified rotation.
+ *
+ *  Stores the conjugate of a specified rotation in an existing psSphereRot* or creates a
+ *  new psSphereRot* if NULL.  The conjugate of a rotation given in quaternions is -q0,
+ *  -q1, -q2, q3.
+ *
+ *  @return psSphereRot*    the Conjugate of the specified psSphereRot, in.
+ */
+psSphereRot* psSphereRotConjugate(
+    psSphereRot *out,                  ///< a psSphereRot to recycle or NULL
+    const psSphereRot *in              ///< the psSphereRot from which to obtain the conjugate
+);
+
 /** Inverts the rotation.
  *
+ *  A given rotation is inverted by creating a psSphereRot using -phiP, -deltaP, -alphaP.
+ *
  *  @return psSphereRot*    Inverted input psSphereRot
  */
 psSphereRot* psSphereRotInvert(
-    psSphereRot *rot
+    double alphaP,                      ///< north pole latitude
+    double deltaP,                      ///< north pole longitude
+    double phiP                         ///< defines the longitude in the input system of the equatorial intersection between the two systems (e.g, the first point of Ares).
 );