EXPAND A COMPLEX ANALYTICAL FUNCTION IN x,y and i (imaginary unit) TERMS (THAT IS REAL AND IMAGINARY PART)

I'd like to know the existence or not of a code in MATLAB or in Fortran form which can manipulate an expression of complex analytical functions,and gives me back the expression in the form of:  <expression>=u(x,y)+i*v(x,y),or in polar terms as well,where expression is something like:F(z)*z/R(z) and F,R analytical complex functions.

Thanks in any case

Ilias I. T.