1 // Boost.Units - A C++ library for zero-overhead dimensional analysis and
2 // unit/quantity manipulation and conversion
3 //
4 // Copyright (C) 2003-2008 Matthias Christian Schabel
5 // Copyright (C) 2008 Steven Watanabe
6 //
7 // Distributed under the Boost Software License, Version 1.0. (See
8 // accompanying file LICENSE_1_0.txt or copy at
9 // http://www.boost.org/LICENSE_1_0.txt)
10 
11 /**
12 \file
13 
14 \brief fail_heterogeneous_unit.cpp
15 
16 \details
17 make sure that trying to bind a heterogeneous system to a different dimension fails.
18 
19 Output:
20 @verbatim
21 @endverbatim
22 **/
23 
24 #include <boost/units/pow.hpp>
25 #include <boost/units/quantity.hpp>
26 #include <boost/units/systems/si.hpp>
27 #include <boost/units/systems/cgs.hpp>
28 //#include <boost/units/systems/conversions/convert_cgs_to_si.hpp>
29 //#include <boost/units/systems/conversions/convert_si_to_cgs.hpp>
30 
31 namespace bu = boost::units;
32 
33 template<class System>
f(bu::quantity<bu::unit<bu::length_dimension,System>> l)34 bu::quantity<bu::unit<bu::energy_dimension, System> > f(bu::quantity<bu::unit<bu::length_dimension, System> > l) {
35     return(static_cast<bu::quantity<bu::unit<bu::energy_dimension, System> > >(f(static_cast<bu::quantity<bu::si::length> >(l))));
36 }
f(bu::quantity<bu::si::length> l)37 bu::quantity<bu::si::energy> f(bu::quantity<bu::si::length> l) {
38     return(l * l * 2.0 * bu::si::kilograms / bu::pow<2>(bu::si::seconds));
39 }
40 
main()41 int main() {
42 
43     f(1.0 * bu::pow<2>(bu::si::meters) / bu::cgs::centimeters);
44 
45     return(0);
46 }
47