Re: [boost] [units] failures in tests and untested non-SI code

From: Matthias Schabel (boost_at_[hidden])
Date: 2008-05-14 11:58:17

> I realize that the Units libary is still a work-in-progress, but I
> thought you might like to know about these failures.   Using 1.35.0
> with the latest Units code (SVN rev. 45355) and using GCC 4.1.2, I get
> these failures in test/:
>
> test_limits,
> test_cmath

You will need get boost/math/special_functions from the trunk - Steven  
just
checked in some revisions that replaced our ad hoc implementations of  
some
of these math functions with those defined in Boost.Math.

> Also, I cannot compile this simple test code.  I may very well be
> doing something wrong:
>
> #include <boost/units/systems/si.hpp>
> #include <boost/units/systems/other/foot.hpp>
> #include <boost/units/systems/detail/non_si_unit.hpp>
>
>
> BOOST_UNITS_NON_SI_UNIT(survey, yard_per_sec, yard_per_sec, 0.3048006
> * 3.0, boost::units::SI::velocity, 53);
>
> typedef  
> boost::units::quantity<boost::units::survey::yard_per_sec_base_unit,
> double> YardsPerSec;
>
> int main()
> {
>    YardsPerSec yps1;
>    YardsPerSec yps2;
>    yps1 -= yps2;
> }

This is probably because you need to convert the base unit into a unit  
by qualifying with unit_type :

typedef  
boost 
::units 
::quantity 
<boost::units::survey::yard_per_sec_base_unit::unit_type,double>	 
YardsPerSec;

We should see if there is a way to at least warn in these cases...

Matthias