Quotient by poly... From definite integration



 in wxmaxima 0.7.1
K: (1+z^2)^4/ (1+z^4)^4

integrate (k,z,0,inf);
Quotient by a polynomial of higher degree -- an error.  To debug this try
debugmode(true);

[that's with gcd:subres]

--> 0 with gcd:ez

[with gcd:mod]
-->  goes on forever.