Add Slice::size().

src/faust_linear_operator/CPU/faust_Slice.cpp

@@ -58,4 +58,9 @@ namespace Faust {
 		cout << "start_id:" << start_id << endl;
 		cout << "end_id:" << end_id << endl;
 	}
+
+	size_t Slice::size() const
+	{
+		return end_id - start_id;
+	}
 }

src/faust_linear_operator/CPU/faust_Slice.h

@@ -22,6 +22,7 @@ namespace Faust
 
 		void display();
 		static void swap(Slice& s1, Slice& s2);
+		size_t size() const;
 
 	};