http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55682
--- Comment #3 from Nico <nico.schloemer at gmail dot com> 2012-12-14 10:37:19 UTC --- (In reply to comment #2) > Then what? This is expected and conforming. Oh, it just struck me as funny that cmath imports std::exp and friends, but not std::erf. I filed the bug since apparently not only I was confused (cf. http://gcc.gnu.org/ml/gcc-help/2012-12/msg00043.html). Anyhow. I suppose libstdc++ is consistent in that cmath doesn't provide more than what is in the standard.