Patch g++.dg/cdce3.C test for IA64 HP-UX

[Gerald Pfeifer]

On Thu, 18 Sep 2008, Steve Ellcey wrote:
> But pow10 isn't part of c99 (is it?).  I am not sure about the *l
> functions that freebsd is complaining about.

As far as I can tell the other *l math functions are in C99 and
FreeBSD has been incrementally adding some, but not yet all, of
them.

(See http://www.freebsd.org/cgi/cvsweb.cgi/src/lib/msun/src/math.h
for a changelog that nicely shows the latter.)

> Maybe the test should be split up into a c99 conforming test and an
> extended test.  Then we could add a new dg-requires for the extended
> functions.

Given the above, strictly speaking we'd need one configure like test
per function, or we'll test the underlying libc and not actually GCC.
:-(

Gerald