Interaction between floats and rational expression code.

Rupert Swarbrick wrote:
>
>
> Hmm, ok. Well, a trivial patch to RATTIMES (and then to *RED) fixes this
> bug completely.

This constitutes a check in a kind of inner-most loop in rational 
function manipulations. I don't know how much
of the test suite measures that, but some computations are entirely in 
rational function code.

Also, there is probably not a mathematical definition of GCD of 
floating-point numbers, or polynomials with them as coefficients.
Depending on this to do the right thing is not mathematically defined, 
and so the fact that the test suite works, a set of programs
that does not exercise anything like this, is not really a test.

RJF