[RFC] Test/Math: Use better result for cbrtl

[Joseph Myers]

On Fri, 13 Dec 2024, YunQiang Su wrote:

>  math/auto-libm-test-out-cbrt | 4 ++--

Don't edit generated files directly.  If you think there is a bug in MPFR 
or MPC affecting the contents of any auto-libm-test-out-* file (these 
tests have resulted in a few MPFR and MPC bug fixes and performance 
improvements in the past), you need to fix the bug there before 
regenerating the affected files in glibc.

-- 
Joseph S. Myers
josmyers@redhat.com