libstdc++/7706: asinh, acosh, atanh are not put in std:: by <cmath>

[Gabriel Dos Reis]

Gabriel Dos Reis <gdr@acm.org> writes:

| http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7706
| 
| Sylvain --
| 
|   This is not a bug nor an oversight in libstdc++.
| Contrary to your assertion, the Standard does not say that
| asinh, acosh and atanh should be put in namespace std::.
| Have a look at table 80.

Would you be happy if those functions were enabled only if you request
C99 support?  Ideally, they should have been part of C90.

-- Gaby