[PATCH]: Add some more builtins opts for sqrt/cbrt

[John David Anglin]

> Fixing this can either occur by the patch I submitted in the above
> thread, or by changing mathfn_built_in to give predictable results no
> matter what the relative sizes of the FP types are.

This might be the best approach.  There are also about a half-dozen
`long double' related testsuite failures on hppa-linux in the libstdc++
suite.  These might also be caused by the above uncertainty.

Dave
-- 
J. David Anglin                                  dave.anglin@nrc-cnrc.gc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6602)