Add a new constructor to Faust::TransformHelper.

src/faust_linear_operator/CPU/faust_TransformHelper.h

@@ -42,6 +42,7 @@ namespace Faust {
 			TransformHelper(TransformHelper<FPP,Cpu>* th);
 			TransformHelper(TransformHelper<FPP,Cpu>* th, bool transpose, bool conjugate);
 			TransformHelper(TransformHelper<FPP,Cpu>* th, Slice s[2]);
+			TransformHelper(Transform<FPP,Cpu> &t);
 
 			Vect<FPP,Cpu> multiply(const Vect<FPP,Cpu> x) const;
 			Vect<FPP,Cpu> multiply(const Vect<FPP,Cpu> x, const bool transpose);

src/faust_linear_operator/CPU/faust_TransformHelper.hpp

@@ -21,6 +21,14 @@ namespace Faust {
 		this->transform = make_shared<Transform<FPP,Cpu>>();
 	}
 
+	template<typename FPP>
+		TransformHelper<FPP,Cpu>::TransformHelper(Transform<FPP,Cpu> &t) : is_transposed(false), is_conjugate(false), is_sliced(false)
+	{
+		//TODO: transform is useless
+		//		Transform<FPP,Cpu>* transform = new Transform<FPP,Cpu>();
+		this->transform = make_shared<Transform<FPP,Cpu>>(t);
+	}
+
 	template<typename FPP>
 		TransformHelper<FPP,Cpu>::TransformHelper(TransformHelper<FPP,Cpu>* th_left, TransformHelper<FPP,Cpu>* th_right)
 		: is_transposed(false), is_conjugate(false), is_sliced(false)