PR libstdc++/49813 revisited: constexpr on <cmath> functions (and builtins)

[Paolo Carlini]

Hi,

On 09/02/2014 11:59 AM, Jonathan Wakely wrote:
> We should either remove _GLIBCXX_CONSTEXPR from <cmath> entirely or
> make it conditional on __STRICT_ANSI__.
The second option seems preferable to me, also considering that 
-std=gnu++* is the default. Plus a bit of release notes.

Thanks,
Paolo.