Change the project name from MbDCode to OndselSolver.

OndselSolver/Negative.cpp

@@ -0,0 +1,32 @@
+/***************************************************************************
+ *   Copyright (c) 2023 Ondsel, Inc.                                       *
+ *                                                                         *
+ *   This file is part of OndselSolver.                                    *
+ *                                                                         *
+ *   See LICENSE file for details about copyright.                         *
+ ***************************************************************************/
+ 
+#include "Negative.h"
+#include "Constant.h"
+
+using namespace MbD;
+
+MbD::Negative::Negative(Symsptr arg) : FunctionX(arg)
+{
+}
+
+double MbD::Negative::getValue()
+{
+	return -xx->getValue();
+}
+
+Symsptr MbD::Negative::differentiateWRTx()
+{
+	return std::make_shared<Constant>(-1);
+}
+
+std::ostream& MbD::Negative::printOn(std::ostream& s) const
+{
+	s << "-(" << xx << ")";
+	return s;
+}