Change display function for a Faust.

Especially, it replaces the RCG by the density.

src/faust_linear_operator/CPU/faust_MatDense.hpp

@@ -503,7 +503,8 @@ std::string Faust::MatDense<FPP,Cpu>::to_string(const bool transpose /* set to f
 	//using ostringstream because it's easier for concatenation (of complex and any number)
 	std::ostringstream  str;
 
-	str<<" type : DENSE";
+	str << " (" << (typeid(*getData()) == typeid(complex<double>) || typeid(*getData()) == typeid(complex<float>)?"complex":"real") << ")";
+	str<<" DENSE,";
 	str << Faust::MatGeneric<FPP,Cpu>::to_string(transpose);
 	if(isZeros)
 		str <<"zeros matrix flag" << endl;

src/faust_linear_operator/CPU/faust_MatSparse.hpp

@@ -330,7 +330,8 @@ template<typename FPP>
 std::string Faust::MatSparse<FPP,Cpu>::to_string(const bool transpose /* set to false by default */) const
 {
 	std::ostringstream str;
-	str<<" type : SPARSE";
+	str << " (" << (typeid(*getValuePtr()) == typeid(complex<double>) || typeid(*getValuePtr()) == typeid(complex<float>)?"complex":"real") << ")";
+	str<<" SPARSE,";
 	str << Faust::MatGeneric<FPP,Cpu>::to_string(transpose);
 	if (this->dim1*this->dim2 < 100)
 	{

src/faust_linear_operator/CPU/faust_Transform.hpp

@@ -905,12 +905,12 @@ std::string Faust::Transform<FPP,Cpu>::to_string(const bool transpose /* default
 		str<<"empty Faust"<<std::endl;
 	else
 	{
-		str<<"Faust of size : ";
+		str<<"Faust size ";
 		if(transpose)
 			str << this->getNbCol() << "x" << this->getNbRow();
 		else
 			str << this->getNbRow()<<"x"<<this->getNbCol();
-		str <<", nb factor "<<size()<<", RCG "<<getRCG()<< ",nnz "<<this->get_total_nnz()<<std::endl;
+		str <<", density "<<1.0/getRCG()<< ", nnz_sum "<<this->get_total_nnz() << ", " << size() << " factors: "<< std::endl;
 		int j;
 		for (int i=0 ; i<size() ; i++)
 		{