48 lines
1.1 KiB
C++
48 lines
1.1 KiB
C++
|
// Boost.Units - A C++ library for zero-overhead dimensional analysis and
|
||
|
|
// unit/quantity manipulation and conversion
|
||
|
|
//
|
||
|
|
// Copyright (C) 2003-2008 Matthias Christian Schabel
|
||
|
|
// Copyright (C) 2008 Steven Watanabe
|
||
|
|
//
|
||
|
|
// Distributed under the Boost Software License, Version 1.0. (See
|
||
|
|
// accompanying file LICENSE_1_0.txt or copy at
|
||
|
|
// http://www.boost.org/LICENSE_1_0.txt)
|
||
|
|
|
||
|
|
#ifndef BOOST_UNITS_IS_DIMENSIONLESS_HPP
|
||
|
|
#define BOOST_UNITS_IS_DIMENSIONLESS_HPP
|
||
|
|
|
||
|
|
///
|
||
|
|
/// \file
|
||
|
|
/// \brief Check if a unit or quantity is dimensionless.
|
||
|
|
///
|
||
|
|
|
||
|
|
#include <boost/mpl/bool.hpp>
|
||
|
|
#include <boost/units/units_fwd.hpp>
|
||
|
|
|
||
|
|
namespace boost {
|
||
|
|
|
||
|
|
namespace units {
|
||
|
|
|
||
|
|
template<class T>
|
||
|
|
struct is_dimensionless :
|
||
|
|
public mpl::false_
|
||
|
|
{ };
|
||
|
|
|
||
|
|
/// Check if a unit is dimensionless.
|
||
|
|
template<class System>
|
||
|
|
struct is_dimensionless< unit<dimensionless_type,System> > :
|
||
|
|
public mpl::true_
|
||
|
|
{ };
|
||
|
|
|
||
|
|
/// Check if a quantity is dimensionless.
|
||
|
|
template<class Unit,class Y>
|
||
|
|
struct is_dimensionless< quantity<Unit,Y> > :
|
||
|
|
public is_dimensionless<Unit>
|
||
|
|
{ };
|
||
|
|
|
||
|
|
} // namespace units
|
||
|
|
|
||
|
|
} // namespace boost
|
||
|
|
|
||
|
|
#endif // BOOST_UNITS_IS_DIMENSIONLESS_HPP
|