Chris@16: // Boost.Units - A C++ library for zero-overhead dimensional analysis and 
Chris@16: // unit/quantity manipulation and conversion
Chris@16: //
Chris@16: // Copyright (C) 2003-2008 Matthias Christian Schabel
Chris@16: // Copyright (C) 2008 Steven Watanabe
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See
Chris@16: // accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: #ifndef BOOST_UNITS_DETAIL_ONE_HPP
Chris@16: #define BOOST_UNITS_DETAIL_ONE_HPP
Chris@16: 
Chris@16: #include <boost/units/operators.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: 
Chris@16: namespace units {
Chris@16: 
Chris@16: struct one { one() {} };
Chris@16: 
Chris@16: // workaround for pathscale.
Chris@16: inline one make_one() {
Chris@16:     one result;
Chris@16:     return(result);
Chris@16: }
Chris@16: 
Chris@16: template<class T>
Chris@16: struct multiply_typeof_helper<one, T>
Chris@16: {
Chris@16:     typedef T type;
Chris@16: };
Chris@16: 
Chris@16: template<class T>
Chris@16: struct multiply_typeof_helper<T, one>
Chris@16: {
Chris@16:     typedef T type;
Chris@16: };
Chris@16: 
Chris@16: template<>
Chris@16: struct multiply_typeof_helper<one, one>
Chris@16: {
Chris@16:     typedef one type;
Chris@16: };
Chris@16: 
Chris@16: template<class T>
Chris@16: inline T operator*(const one&, const T& t)
Chris@16: {
Chris@16:     return(t);
Chris@16: }
Chris@16: 
Chris@16: template<class T>
Chris@16: inline T operator*(const T& t, const one&)
Chris@16: {
Chris@16:     return(t);
Chris@16: }
Chris@16: 
Chris@16: inline one operator*(const one&, const one&)
Chris@16: {
Chris@16:     one result;
Chris@16:     return(result);
Chris@16: }
Chris@16: 
Chris@16: template<class T>
Chris@16: struct divide_typeof_helper<T, one>
Chris@16: {
Chris@16:     typedef T type;
Chris@16: };
Chris@16: 
Chris@16: template<class T>
Chris@16: struct divide_typeof_helper<one, T>
Chris@16: {
Chris@16:     typedef T type;
Chris@16: };
Chris@16: 
Chris@16: template<>
Chris@16: struct divide_typeof_helper<one, one>
Chris@16: {
Chris@16:     typedef one type;
Chris@16: };
Chris@16: 
Chris@16: template<class T>
Chris@16: inline T operator/(const T& t, const one&)
Chris@16: {
Chris@16:     return(t);
Chris@16: }
Chris@16: 
Chris@16: template<class T>
Chris@16: inline T operator/(const one&, const T& t)
Chris@16: {
Chris@16:     return(1/t);
Chris@16: }
Chris@16: 
Chris@16: inline one operator/(const one&, const one&)
Chris@16: {
Chris@16:     one result;
Chris@16:     return(result);
Chris@16: }
Chris@16: 
Chris@16: template<class T>
Chris@16: inline bool operator>(const boost::units::one&, const T& t) {
Chris@16:     return(1 > t);
Chris@16: }
Chris@16: 
Chris@16: template<class T>
Chris@16: T one_to_double(const T& t) { return t; }
Chris@16: 
Chris@16: inline double one_to_double(const one&) { return 1.0; }
Chris@16: 
Chris@16: template<class T>
Chris@16: struct one_to_double_type { typedef T type; };
Chris@16: 
Chris@16: template<>
Chris@16: struct one_to_double_type<one> { typedef double type; };
Chris@16: 
Chris@16: } // namespace units
Chris@16: 
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #endif