Index: trunk/psLib/src/astro/psEarthOrientation.h
===================================================================
--- trunk/psLib/src/astro/psEarthOrientation.h	(revision 6030)
+++ trunk/psLib/src/astro/psEarthOrientation.h	(revision 6039)
@@ -9,6 +9,6 @@
 *  @author Robert Daniel DeSonia, MHPCC
 *
-*  @version $Revision: 1.12 $ $Name: not supported by cvs2svn $
-*  @date $Date: 2006-01-18 00:41:29 $
+*  @version $Revision: 1.13 $ $Name: not supported by cvs2svn $
+*  @date $Date: 2006-01-18 23:49:06 $
 *
 *  Copyright 2005 Maui High Performance Computing Center, University of Hawaii
@@ -176,3 +176,15 @@
 );
 
+/** Generates the complete spherical rotation to account for precession
+ *  between two times.  The equinoxes shall be Julian equinoxes.
+ *
+ *  @return psSphere* the resulting spherical rotation
+ */
+psSphere* psSpherePrecess(
+    psSphere *coords,                  ///< coordinates (modified in-place)
+    const psTime *fromTime,            ///< equinox of coords input
+    const psTime *toTime               ///< equinox of coords output
+);
+
+
 #endif // #ifndef PS_EARTH_ORIENTATION