#if BOOST_MSVC < 1400 extern "C" { double rint(double); } #else inline double rint(double x) { _asm FLD [x] ; _asm FRNDINT ; //_asm RET ; } #endif

In msvc_rounding_control.hpp.

HTH, John.

Thanks John, that helped a lot and is by far more elegant than my solution (simply add a rint implementation to my project). Perhaps your solution should be included in the next boost version. Best regards & thanks Stephan