Hi Jens, Sorry for the typo on your name. I'm used to typing "Love-Jensen" and my fingers didn't stop typing in time. :-) I *believe* 17.4.1.2.4 for <cmath> requires the std::sin symbol, but does not preclude global namespace ::sin. But... I'm not assuredly sure if ::sin is to be expected, or if it is an implementation detail. Or if I'm mistaken entirely and ::sin should not be present at all. (My druthers would be that ::sin is not present at all. C'est la vie.) Sincerely, --Eljay