Change the project name from MbDCode to OndselSolver.

OndselSolver/IndependentVariable.cpp

@@ -0,0 +1,26 @@
+/***************************************************************************
+ *   Copyright (c) 2023 Ondsel, Inc.                                       *
+ *                                                                         *
+ *   This file is part of OndselSolver.                                    *
+ *                                                                         *
+ *   See LICENSE file for details about copyright.                         *
+ ***************************************************************************/
+ 
+#include "IndependentVariable.h"
+#include "Constant.h"
+
+using namespace MbD;
+
+IndependentVariable::IndependentVariable()
+{
+}
+
+Symsptr MbD::IndependentVariable::differentiateWRT(Symsptr var)
+{
+	if (this == var.get()) {
+		return std::make_shared<Constant>(1.0);
+	}
+	else {
+		return std::make_shared<Constant>(0.0);
+	}
+}