What is a Q-D scheme for a continued fraction? I am reading this text on numerical evaluation of the H-function and the author suggests using continued fractions as done by many other special functions. However, he shows this q-d scheme whose definition I cannot find.
EDIT: Here is a screenshot of the section of the paper I was referring to.
It was quite easy to understand and apply this, but it left wandering what is the Q-D scheme :)