Which is the better way do write documentation for functions for  a CFFI library

like this?

C++: int RNG::uniform(int a, int b)

Common Lisp: (UNIFORM-D (RNG (:POINTER RNG)) (A :DOUBLE) (B :DOUBLE)) => :DOUBLE

or like this without the parenthesis

C++: float RNG::uniform(float a, float b)

Common Lisp: (UNIFORM-F (RNG :POINTER RNG) A :FLOAT B :FLOAT) => :FLOAT