| |
| // Copyright Aleksey Gurtovoy 2000-2004 |
| // |
| // 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) |
| // |
| // See http://www.boost.org/libs/mpl for documentation. |
| |
| // $Id: fold.cpp 49268 2008-10-11 06:26:17Z agurtovoy $ |
| // $Date: 2008-10-11 02:26:17 -0400 (Sat, 11 Oct 2008) $ |
| // $Revision: 49268 $ |
| |
| #include <boost/mpl/fold.hpp> |
| #include <boost/mpl/reverse_fold.hpp> |
| //#include <boost/mpl/vector.hpp> |
| #include <boost/mpl/list.hpp> |
| #include <boost/mpl/list_c.hpp> |
| #include <boost/mpl/equal.hpp> |
| #include <boost/mpl/equal_to.hpp> |
| #include <boost/mpl/next.hpp> |
| #include <boost/mpl/push_front.hpp> |
| #include <boost/mpl/if.hpp> |
| #include <boost/mpl/less.hpp> |
| #include <boost/mpl/int.hpp> |
| #include <boost/mpl/at.hpp> |
| #include <boost/mpl/size.hpp> |
| #include <boost/type_traits/is_float.hpp> |
| |
| #include <boost/mpl/aux_/test.hpp> |
| |
| MPL_TEST_CASE() |
| { |
| typedef list<long,float,short,double,float,long,long double> types; |
| typedef fold< |
| types |
| , int_<0> |
| , if_< boost::is_float<_2>,next<_1>,_1 > |
| >::type number_of_floats; |
| |
| MPL_ASSERT_RELATION( number_of_floats::value, ==, 4 ); |
| } |
| |
| MPL_TEST_CASE() |
| { |
| typedef list_c<int,5,-1,0,-7,-2,0,-5,4> numbers; |
| typedef list_c<int,-1,-7,-2,-5> negatives; |
| typedef reverse_fold< |
| numbers |
| , list_c<int> |
| , if_< less< _2,int_<0> >, push_front<_1,_2>, _1 > |
| >::type result; |
| |
| MPL_ASSERT(( equal< result,negatives,equal_to<_1,_2> > )); |
| } |