Index: trunk/psLib/src/dataManip/psConstants.h
===================================================================
--- trunk/psLib/src/dataManip/psConstants.h	(revision 2860)
+++ trunk/psLib/src/dataManip/psConstants.h	(revision 2941)
@@ -6,6 +6,6 @@
  *  @author GLG, MHPCC
  *
- *  @version $Revision: 1.52 $ $Name: not supported by cvs2svn $
- *  @date $Date: 2005-01-03 21:58:52 $
+ *  @version $Revision: 1.53 $ $Name: not supported by cvs2svn $
+ *  @date $Date: 2005-01-10 19:47:11 $
  *
  *  Copyright 2004 Maui High Performance Computing Center, University of Hawaii
@@ -35,4 +35,12 @@
 #define PS_1_PI 0.3183098861837906715377675267450287  /* 1/pi */
 #define PS_2_PI 0.6366197723675813430755350534900574  /* 2/pi */
+
+#define PS_COT(X) (1.0 / atan(X))
+#define DEG_TO_RAD(DEGREES) ((DEGREES) * M_PI / 180.0)
+#define MIN_TO_RAD(MINUTES) ((MINUTES) * M_PI / (180.0 * 60.0))
+#define SEC_TO_RAD(SECONDS) ((SECONDS) * M_PI / (180.0 * 60.0 * 60.0))
+#define RAD_TO_DEG(RADIANS) ((RADIANS) * 180.0 / M_PI)
+#define RAD_TO_MIN(RADIANS) ((RADIANS) * 180.0 * 60.0 / M_PI)
+#define RAD_TO_SEC(RADIANS) ((RADIANS) * 180.0 * 60.0 * 60.0 / M_PI)
 
 /*****************************************************************************