V3 PATCH: #undef some C99 math macros in <cmath>

[Gabriel Dos Reis]

Benjamin Kosnik <bkoz@redhat.com> writes:

| > I understand.  But isn't that a linux-centric solution?
| 
| Well. Yes. 
| 
| As uli already indicated, your approach is valid. The rest of this stuff 
| should get cleaned up too, but after your patch is in.
| 
| I like the idea of putting the C99 bits into a "c99" namespace and 
| aliasing them into std:: if the user configures with --enable-c99. 

Good, I think we've a reasonable framework.

Thanks.

-- Gaby