piston.asmt file is running correctly

MbDCode/ExpressionX.cpp

@@ -1,3 +1,26 @@
 #include "ExpressionX.h"
 
 using namespace MbD;
+
+void MbD::ExpressionX::xexpression(Symsptr arg, Symsptr func)
+{
+	//"
+	//Future modification :
+	//Check that func is a function of arg.
+	//No need for self to be dependent of arg since self is dependent of func which is indirectly
+	//dependent of of arg.
+	//"
+
+	xx = arg;
+	expression = func;
+}
+
+Symsptr MbD::ExpressionX::differentiateWRT(Symsptr var)
+{
+	return expression->differentiateWRT(var);
+}
+
+double MbD::ExpressionX::getValue()
+{
+	return expression->getValue();
+}