[Bug libstdc++/48406] #undefs isfinite() from math.h in C++0x mode

[jyasskin at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48406

--- Comment #1 from Jeffrey Yasskin <jyasskin at gcc dot gnu.org> 2011-04-02 
05:52:12 UTC ---
FWIW, the path from algorithm->cmath appears to have been introduced in
gcc-4.5.