Index: trunk/psLib/src/math/psSpline.h
===================================================================
--- trunk/psLib/src/math/psSpline.h	(revision 6305)
+++ trunk/psLib/src/math/psSpline.h	(revision 7766)
@@ -12,6 +12,6 @@
  *  @author GLG, MHPCC
  *
- *  @version $Revision: 1.59 $ $Name: not supported by cvs2svn $
- *  @date $Date: 2006-02-02 21:09:08 $
+ *  @version $Revision: 1.60 $ $Name: not supported by cvs2svn $
+ *  @date $Date: 2006-06-30 02:20:06 $
  *
  *  Copyright 2004-2005 Maui High Performance Computing Center, University of Hawaii
@@ -29,4 +29,7 @@
 #include "psScalar.h"
 #include "psPolynomial.h"
+
+#define PS_LEFT_SPLINE_DERIV 0.0
+#define PS_RIGHT_SPLINE_DERIV 0.0
 
 /** \addtogroup GROUP00
@@ -92,4 +95,24 @@
 );
 
+/*****************************************************************************
+    PS_SPLINE macros:
+*****************************************************************************/
+#define PS_ASSERT_SPLINE(NAME, RVAL) \
+if (false == psMemCheckSpline1D(NAME)) { \
+    psError(PS_ERR_BAD_PARAMETER_NULL, true, \
+            "Unallowable operation: argument %s is not a psSpline1D struct.\n",\
+            #NAME); \
+    return(RVAL); \
+} \
+
+#define PS_ASSERT_SPLINE_NON_NULL(NAME, RVAL) \
+if ((NAME) == NULL) { \
+    psError(PS_ERR_BAD_PARAMETER_NULL, true, \
+            "Unallowable operation: psSpline1D %s is NULL.", \
+            #NAME); \
+    return(RVAL); \
+} \
+
+
 /** \} */ // End of MathGroup Functions