like "_myfunc". 
<EM>paramspec</EM> is a list of parameter type specifications
which is used for the data type conversion and coercion when arguments are
passed from EusLisp to the C function.
<EM>Paramspec</EM> can be NIL if no data conversion or type check is required.
One of <B>:integer, :float , :string</B>, or <EM>(:string n)</EM> must be
given to <EM>resulttype</EM>.
<B>:Integer</B> means that the c function returns either char, short or
int (long).
<B>:Float</B> should be specified both for float and