arithmetic.cpp

来自「boost库提供标准的C++ API 配合dev c++使用,功能更加强大」· C++ 代码 · 共 54 行

//-----------------------------------------------------------------------------
// boost mpl/test/arithmetic.cpp source file
// See http://www.boost.org for updates, documentation, and revision history.
//-----------------------------------------------------------------------------
//
// Copyright (c) 2001-02
// Aleksey Gurtovoy
//
// Permission to use, copy, modify, distribute and sell this software
// and its documentation for any purpose is hereby granted without fee, 
// provided that the above copyright notice appears in all copies and 
// that both the copyright notice and this permission notice appear in 
// supporting documentation. No representations are made about the 
// suitability of this software for any purpose. It is provided "as is" 
// without express or implied warranty.

#include "boost/mpl/arithmetic.hpp"
#include "boost/mpl/int.hpp"
#include "boost/static_assert.hpp"

namespace mpl = boost::mpl;

int main()
{
    typedef mpl::int_<0> _0;
    typedef mpl::int_<1> _1;
    typedef mpl::int_<3> _3;
    typedef mpl::int_<10> _10;

    BOOST_STATIC_ASSERT((mpl::plus<_0,_10>::value == 10));
    BOOST_STATIC_ASSERT((mpl::plus<_10,_0>::value == 10));

    BOOST_STATIC_ASSERT((mpl::minus<_0,_10>::value == -10));
    BOOST_STATIC_ASSERT((mpl::minus<_10,_0>::value == 10));

    BOOST_STATIC_ASSERT((mpl::multiplies<_1,_10>::value == 10));
    BOOST_STATIC_ASSERT((mpl::multiplies<_10,_1>::value == 10));

    BOOST_STATIC_ASSERT((mpl::divides<_10,_1>::value == 10));
    BOOST_STATIC_ASSERT((mpl::divides<_10,_1>::value == 10));

    BOOST_STATIC_ASSERT((mpl::modulus<_10,_1>::value == 0));
    BOOST_STATIC_ASSERT((mpl::modulus<_10,_3>::value == 1));

    BOOST_STATIC_ASSERT((mpl::minus<_10,_1,_10>::value == -1));
    BOOST_STATIC_ASSERT((mpl::plus<_10,_1,_10>::value == 21));
    BOOST_STATIC_ASSERT((mpl::divides<_10,_1,_10>::value == 1));
    BOOST_STATIC_ASSERT((mpl::divides<_10,_1,_10>::value == 1));
    
    BOOST_STATIC_ASSERT((mpl::negate<_10>::value == -10));

    return 0;
}