AMDG On 03/10/2014 10:12 AM, Roger Martin wrote:
I've tried and tried and just not understanding or can't muddle my way through the boost units(looks powerful though). For a start, just trying to get at the speed of light in boost/units/systems/si/codata/universal_constants.hpp
boost::units::si::constants::codata::c boost::units<boost::units::si>::constants::codata::c.value() and massive errors; especially if I try to multiplying with something.
I use boost::math::constants::pi<double>() from #include "boost/math/constants/constants.hpp"
But the universals allude me; and example? where is my brain stuck?
I'm not sure. You'll need to give more details. (preferable a small /complete/ program that doesn't compile) The following seems to work for me. (I did run into the fact that there's a missing #include <boost/units/quantity.hpp> in the constants.) #include <boost/units/quantity.hpp> #include <boost/units/systems/si/codata_constants.hpp> #include <boost/units/io.hpp> #include <iostream> int main() { std::cout << boost::units::si::constants::codata::c * 2.5 << std::endl; } In Christ, Steven Watanabe