ceph/src/boost/libs/units/include/boost/units/is_quantity.hpp

   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 #ifndef BOOST_UNITS_IS_QUANTITY_HPP
  12 #define BOOST_UNITS_IS_QUANTITY_HPP
  13
  14 ///
  15 /// \file
  16 /// \brief Check that a type is a quantity.
  17 ///
  18
  19 #include <boost/mpl/bool.hpp>
  20 #include <boost/units/units_fwd.hpp>
  21
  22 namespace boost {
  23
  24 namespace units {
  25
  26 /// Check that a type is a quantity.
  27 template<typename T>
  28 struct is_quantity :
  29     public mpl::false_
  30 { };
  31
  32 template<class Unit,
  33          class Y>
  34 struct is_quantity< quantity<Unit,Y> > :
  35     public mpl::true_
  36 { };
  37
  38 } // namespace units
  39
  40 } // namespace boost
  41
  42 #endif // BOOST_UNITS_IS_QUANTITY_HPP