[libstdc++] Split testsuite/decimal/mixed-mode_neg.cc (issue4273077)

[Paolo Carlini]

On 03/18/2011 06:16 PM, dnovillo@google.com wrote:
> Paolo,
>
> Splitting this test fixes the failures I described in
> http://gcc.gnu.org/ml/libstdc++/2011-03/msg00076.html
>
> OK for trunk?
Sure, it's Ok. A nit, however: we have been using quite consistently the 
*_neg suffix for such kind of testcases, I think mixed-mode-1_neg.cc and 
mixed-mode-2_neg.cc are better names.

Paolo.