Add Error functions to mirror/inverse fitness logic

Chromosome.cpp

@@ -136,6 +136,34 @@ namespace BitEvolver
 		return this->fitness;
 	}
 	
+	//
+	void Chromosome::ResetError()
+	{
+		//
+		this->ResetFitness();
+	}
+	
+	//
+	void Chromosome::SetError(double e)
+	{
+		//
+		this->SetFitness(-e);
+	}
+	
+	//
+	void Chromosome::AdjustError(double e)
+	{
+		//
+		this->AdjustFitness(-e);
+	}
+	
+	//
+	double Chromosome::GetError()
+	{
+		//
+		return -this->GetFitness();
+	}
+	
 	//
 	string Chromosome::ToString()
 	{

Chromosome.h

@@ -48,6 +48,14 @@ namespace BitEvolver
 			void AdjustFitness(double d);
 			double GetFitness();
 			
+			/**
+				Error is just inverted fitness
+			*/
+			void ResetError();
+			void SetError(double e);
+			void AdjustError(double e);
+			double GetError();
+			
 			//
 			std::string ToString();