I wanted to gauge whether there might be interest in a class for complex numbers with data stored in polar form. For some applications, polar complex numbers have significant advantages over Cartesian complex (e.g., std::complex) in efficiency and numerical accuracy. (I spent some time Googling and, somewhat to my surprise, didn't find any freely available versions of this.) I have a fairly well developed class that implements this; "boosting" it to be worthy of consideration would probably be straight-forward but non-trivial. My version of this is of course templated on the contained numeric type. It is also uses a policy-based design that determines whether or not the polar angle phi is always maintained in principal form or not and what constitutes principal form (default: no, -pi < phi <= pi). Thanks, Mickey Moore ---------------------------------------- Mitchell G. (Mickey) Moore, Ph.D. mgmoore@austin.rr.com