[Boost-users] Using atan2 in boost::units

Subject: [Boost-users] Using atan2 in boost::units
From: Brandon Olivares (programmer2188_at_[hidden])
Date: 2010-01-04 10:55:34

Hi,

I need to use the boost::units::atan2() function in boost/units/cmath.hpp,
but am having trouble figuring out how. Do the units have to be
dimensionless, or can they be any unit?

I have two variables, x_ and y_ which are of a scaled unit type, called
light_second_unit. I'm calling it like this:

boost::units::atan2(y_, x_);

I get this error:

./physics/cartesian_coordinate_system/point.cpp:85: error: no matching
function for call to
`atan2(boost::units::quantity<boost::units::astronomical::light_second_unit,
double>,
boost::units::quantity<boost::units::astronomical::light_second_unit,
double>)'

If it has to be dimensionless, how do I convert them to a dimensionless
quantity?

Thanks,
Brandon

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