156 lines
3.9 KiB
C++
156 lines
3.9 KiB
C++
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// Copyright Aleksey Gurtovoy 2003-2004
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/mpl for documentation.
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// $Id$
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// $Date$
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// $Revision$
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#include <boost/mpl/arithmetic.hpp>
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#include <boost/mpl/comparison.hpp>
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#include <boost/mpl/and.hpp>
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#include <boost/mpl/int.hpp>
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#include <boost/mpl/long.hpp>
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#include <boost/mpl/aux_/test.hpp>
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struct complex_tag : int_<10> {};
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template< typename Re, typename Im > struct complex
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{
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typedef complex_tag tag;
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typedef complex type;
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typedef Re real;
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typedef Im imag;
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};
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template< typename C > struct real : C::real {};
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template< typename C > struct imag : C::imag {};
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namespace boost { namespace mpl {
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template<> struct BOOST_MPL_AUX_NUMERIC_CAST< integral_c_tag,complex_tag >
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{
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template< typename N > struct apply
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: complex< N, integral_c< typename N::value_type, 0 > >
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{
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};
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};
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template<>
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struct plus_impl< complex_tag,complex_tag >
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{
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template< typename N1, typename N2 > struct apply
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: complex<
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plus< typename N1::real, typename N2::real >
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, plus< typename N1::imag, typename N2::imag >
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>
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{
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};
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};
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template<>
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struct times_impl< complex_tag,complex_tag >
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{
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template< typename N1, typename N2 > struct apply
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: complex<
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minus<
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times< typename N1::real, typename N2::real >
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, times< typename N1::imag, typename N2::imag >
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>
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, plus<
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times< typename N1::real, typename N2::imag >
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, times< typename N1::imag, typename N2::real >
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>
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>
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{
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};
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};
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template<>
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struct equal_to_impl< complex_tag,complex_tag >
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{
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template< typename N1, typename N2 > struct apply
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: and_<
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equal_to< typename N1::real, typename N2::real >
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, equal_to< typename N1::imag, typename N2::imag >
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>
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{
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};
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};
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}}
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typedef int_<2> i;
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typedef complex< int_<5>, int_<-1> > c1;
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typedef complex< int_<-5>, int_<1> > c2;
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MPL_TEST_CASE()
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{
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typedef plus<c1,c2>::type r1;
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MPL_ASSERT_RELATION( real<r1>::value, ==, 0 );
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MPL_ASSERT_RELATION( imag<r1>::value, ==, 0 );
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typedef plus<c1,c1>::type r2;
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MPL_ASSERT_RELATION( real<r2>::value, ==, 10 );
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MPL_ASSERT_RELATION( imag<r2>::value, ==, -2 );
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typedef plus<c2,c2>::type r3;
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MPL_ASSERT_RELATION( real<r3>::value, ==, -10 );
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MPL_ASSERT_RELATION( imag<r3>::value, ==, 2 );
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#if !BOOST_WORKAROUND(BOOST_MSVC, < 1300)
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typedef plus<c1,i>::type r4;
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MPL_ASSERT_RELATION( real<r4>::value, ==, 7 );
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MPL_ASSERT_RELATION( imag<r4>::value, ==, -1 );
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typedef plus<i,c2>::type r5;
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MPL_ASSERT_RELATION( real<r5>::value, ==, -3 );
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MPL_ASSERT_RELATION( imag<r5>::value, ==, 1 );
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#endif
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}
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MPL_TEST_CASE()
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{
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typedef times<c1,c2>::type r1;
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MPL_ASSERT_RELATION( real<r1>::value, ==, -24 );
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MPL_ASSERT_RELATION( imag<r1>::value, ==, 10 );
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typedef times<c1,c1>::type r2;
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MPL_ASSERT_RELATION( real<r2>::value, ==, 24 );
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MPL_ASSERT_RELATION( imag<r2>::value, ==, -10 );
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typedef times<c2,c2>::type r3;
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MPL_ASSERT_RELATION( real<r3>::value, ==, 24 );
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MPL_ASSERT_RELATION( imag<r3>::value, ==, -10 );
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#if !BOOST_WORKAROUND(BOOST_MSVC, < 1300)
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typedef times<c1,i>::type r4;
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MPL_ASSERT_RELATION( real<r4>::value, ==, 10 );
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MPL_ASSERT_RELATION( imag<r4>::value, ==, -2 );
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typedef times<i,c2>::type r5;
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MPL_ASSERT_RELATION( real<r5>::value, ==, -10 );
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MPL_ASSERT_RELATION( imag<r5>::value, ==, 2 );
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#endif
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}
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MPL_TEST_CASE()
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{
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MPL_ASSERT(( equal_to<c1,c1> ));
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MPL_ASSERT(( equal_to<c2,c2> ));
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MPL_ASSERT_NOT(( equal_to<c1,c2> ));
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MPL_ASSERT(( equal_to<c1, complex< long_<5>, long_<-1> > > ));
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#if !BOOST_WORKAROUND(BOOST_MSVC, < 1300)
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MPL_ASSERT_NOT(( equal_to<c1,i> ));
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MPL_ASSERT_NOT(( equal_to<i,c2> ));
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#endif
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}
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