fail_heterogeneous_unit.cpp 1.3 KB

12345678910111213141516171819202122232425262728293031323334353637383940414243444546
  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. \file
  12. \brief fail_heterogeneous_unit.cpp
  13. \details
  14. make sure that trying to bind a heterogeneous system to a different dimension fails.
  15. Output:
  16. @verbatim
  17. @endverbatim
  18. **/
  19. #include <boost/units/pow.hpp>
  20. #include <boost/units/quantity.hpp>
  21. #include <boost/units/systems/si.hpp>
  22. #include <boost/units/systems/cgs.hpp>
  23. //#include <boost/units/systems/conversions/convert_cgs_to_si.hpp>
  24. //#include <boost/units/systems/conversions/convert_si_to_cgs.hpp>
  25. namespace bu = boost::units;
  26. template<class System>
  27. bu::quantity<bu::unit<bu::energy_dimension, System> > f(bu::quantity<bu::unit<bu::length_dimension, System> > l) {
  28. return(static_cast<bu::quantity<bu::unit<bu::energy_dimension, System> > >(f(static_cast<bu::quantity<bu::si::length> >(l))));
  29. }
  30. bu::quantity<bu::si::energy> f(bu::quantity<bu::si::length> l) {
  31. return(l * l * 2.0 * bu::si::kilograms / bu::pow<2>(bu::si::seconds));
  32. }
  33. int main() {
  34. f(1.0 * bu::pow<2>(bu::si::meters) / bu::cgs::centimeters);
  35. return(0);
  36. }