[Bug target/54686] std::abs (long long) resorts to std::abs (double) if llabs is absent

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54686

--- Comment #16 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-09-23 22:52:50 UTC ---
I also note that so far we added the long long overloads only in C++11 mode. I
know that elsewhere in the library we have long long overloads in C++98 mode
too as extensions, but then maybe better wrapping in _GLIBCXX_USE_LONG_LONG?