Index: trunk/psLib/src/dataManip/psConstants.h
===================================================================
--- trunk/psLib/src/dataManip/psConstants.h	(revision 2058)
+++ trunk/psLib/src/dataManip/psConstants.h	(revision 2106)
@@ -6,6 +6,6 @@
  *  @author GLG, MHPCC
  *
- *  @version $Revision: 1.9 $ $Name: not supported by cvs2svn $
- *  @date $Date: 2004-10-12 20:53:02 $
+ *  @version $Revision: 1.10 $ $Name: not supported by cvs2svn $
+ *  @date $Date: 2004-10-14 01:44:48 $
  *
  *  Copyright 2004 Maui High Performance Computing Center, University of Hawaii
@@ -113,4 +113,10 @@
     return(NULL); \
 }
+/** Preprocessor macro to generate error on a NULL poniter */
+#define PS_CHECK_NULL_PTR_RETURN_ZERO(NAME) \
+if (NAME == NULL) { \
+    psError(__func__,"Unallowable operation: %s is NULL.", #NAME); \
+    return(0); \
+}
 
 /** Preprocessor macro to generate error for zero length vector */