On 2/26/06, Richard Fateman <fateman at cs.berkeley.edu> wrote:
> I haven't been following this branch cut discussion much,
> but I participated in the negotiating between Guy Steele and
> W. Kahan on the branch cut definitions in CL. The intention
> was to use Kahan's branch cuts. If they have strayed, that
> is too bad. One way of "fixing" these bugs is to take the
> tests that depend on them out of the test suite!
Sure, but I don't think that's necessary now.
As to whether CLHS differs from Kahan's recommendations,
the only discrepancy that I know is that the description of
the branch cuts of atanh is at odds with the formula
(log(1 + x) - log(1 - x))/2.
For what it's worth,
Robert