| /* |
| Copyright (c) Marshall Clow 2013. |
| |
| 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) |
| |
| For more information, see http://www.boost.org |
| */ |
| |
| #include <boost/config.hpp> |
| #include <boost/algorithm/cxx17/transform_reduce.hpp> |
| |
| #include "iterator_test.hpp" |
| |
| #define BOOST_TEST_MAIN |
| #include <boost/test/unit_test.hpp> |
| |
| namespace ba = boost::algorithm; |
| |
| template <class _Tp> |
| struct identity |
| { |
| const _Tp& operator()(const _Tp& __x) const { return __x;} |
| }; |
| |
| template <class _Tp> |
| struct twice |
| { |
| const _Tp operator()(const _Tp& __x) const { return 2 * __x; } |
| }; |
| |
| |
| template <class Iter1, class T, class BOp, class UOp> |
| void |
| test_init_bop_uop(Iter1 first1, Iter1 last1, T init, BOp bOp, UOp uOp, T x) |
| { |
| BOOST_CHECK(ba::transform_reduce(first1, last1, init, bOp, uOp) == x); |
| } |
| |
| template <class Iter> |
| void |
| test_init_bop_uop() |
| { |
| int ia[] = {1, 2, 3, 4, 5, 6}; |
| unsigned sa = sizeof(ia) / sizeof(ia[0]); |
| |
| test_init_bop_uop(Iter(ia), Iter(ia), 0, std::plus<int>(), identity<int>(), 0); |
| test_init_bop_uop(Iter(ia), Iter(ia), 1, std::multiplies<int>(), identity<int>(), 1); |
| test_init_bop_uop(Iter(ia), Iter(ia+1), 0, std::multiplies<int>(), identity<int>(), 0); |
| test_init_bop_uop(Iter(ia), Iter(ia+1), 2, std::plus<int>(), identity<int>(), 3); |
| test_init_bop_uop(Iter(ia), Iter(ia+2), 0, std::plus<int>(), identity<int>(), 3); |
| test_init_bop_uop(Iter(ia), Iter(ia+2), 3, std::multiplies<int>(), identity<int>(), 6); |
| test_init_bop_uop(Iter(ia), Iter(ia+sa), 4, std::multiplies<int>(), identity<int>(), 2880); |
| test_init_bop_uop(Iter(ia), Iter(ia+sa), 4, std::plus<int>(), identity<int>(), 25); |
| |
| test_init_bop_uop(Iter(ia), Iter(ia), 0, std::plus<int>(), twice<int>(), 0); |
| test_init_bop_uop(Iter(ia), Iter(ia), 1, std::multiplies<int>(), twice<int>(), 1); |
| test_init_bop_uop(Iter(ia), Iter(ia+1), 0, std::multiplies<int>(), twice<int>(), 0); |
| test_init_bop_uop(Iter(ia), Iter(ia+1), 2, std::plus<int>(), twice<int>(), 4); |
| test_init_bop_uop(Iter(ia), Iter(ia+2), 0, std::plus<int>(), twice<int>(), 6); |
| test_init_bop_uop(Iter(ia), Iter(ia+2), 3, std::multiplies<int>(), twice<int>(), 24); |
| test_init_bop_uop(Iter(ia), Iter(ia+sa), 4, std::multiplies<int>(), twice<int>(), 184320); // 64 * 2880 |
| test_init_bop_uop(Iter(ia), Iter(ia+sa), 4, std::plus<int>(), twice<int>(), 46); |
| } |
| |
| void test_transform_reduce_init_bop_uop() |
| { |
| BOOST_CHECK ( true ); |
| } |
| |
| template <class Iter1, class Iter2, class T, class Op1, class Op2> |
| void |
| test_init_bop_bop(Iter1 first1, Iter1 last1, Iter2 first2, T init, Op1 op1, Op2 op2, T x) |
| { |
| BOOST_CHECK(ba::transform_reduce(first1, last1, first2, init, op1, op2) == x); |
| } |
| |
| template <class SIter, class UIter> |
| void |
| test_init_bop_bop() |
| { |
| int ia[] = {1, 2, 3, 4, 5, 6}; |
| unsigned int ua[] = {2, 4, 6, 8, 10,12}; |
| unsigned sa = sizeof(ia) / sizeof(ia[0]); |
| BOOST_CHECK(sa == sizeof(ua) / sizeof(ua[0])); // just to be sure |
| |
| test_init_bop_bop(SIter(ia), SIter(ia), UIter(ua), 0, std::plus<int>(), std::multiplies<int>(), 0); |
| test_init_bop_bop(UIter(ua), UIter(ua), SIter(ia), 1, std::multiplies<int>(), std::plus<int>(), 1); |
| test_init_bop_bop(SIter(ia), SIter(ia+1), UIter(ua), 0, std::multiplies<int>(), std::plus<int>(), 0); |
| test_init_bop_bop(UIter(ua), UIter(ua+1), SIter(ia), 2, std::plus<int>(), std::multiplies<int>(), 4); |
| test_init_bop_bop(SIter(ia), SIter(ia+2), UIter(ua), 0, std::plus<int>(), std::multiplies<int>(), 10); |
| test_init_bop_bop(UIter(ua), UIter(ua+2), SIter(ia), 3, std::multiplies<int>(), std::plus<int>(), 54); |
| test_init_bop_bop(SIter(ia), SIter(ia+sa), UIter(ua), 4, std::multiplies<int>(), std::plus<int>(), 2099520); |
| test_init_bop_bop(UIter(ua), UIter(ua+sa), SIter(ia), 4, std::plus<int>(), std::multiplies<int>(), 186); |
| } |
| |
| void test_transform_reduce_init_bop_bop() |
| { |
| // All the iterator categories |
| test_init_bop_bop<input_iterator <const int*>, input_iterator <const unsigned int*> >(); |
| test_init_bop_bop<input_iterator <const int*>, forward_iterator <const unsigned int*> >(); |
| test_init_bop_bop<input_iterator <const int*>, bidirectional_iterator<const unsigned int*> >(); |
| test_init_bop_bop<input_iterator <const int*>, random_access_iterator<const unsigned int*> >(); |
| |
| test_init_bop_bop<forward_iterator <const int*>, input_iterator <const unsigned int*> >(); |
| test_init_bop_bop<forward_iterator <const int*>, forward_iterator <const unsigned int*> >(); |
| test_init_bop_bop<forward_iterator <const int*>, bidirectional_iterator<const unsigned int*> >(); |
| test_init_bop_bop<forward_iterator <const int*>, random_access_iterator<const unsigned int*> >(); |
| |
| test_init_bop_bop<bidirectional_iterator<const int*>, input_iterator <const unsigned int*> >(); |
| test_init_bop_bop<bidirectional_iterator<const int*>, forward_iterator <const unsigned int*> >(); |
| test_init_bop_bop<bidirectional_iterator<const int*>, bidirectional_iterator<const unsigned int*> >(); |
| test_init_bop_bop<bidirectional_iterator<const int*>, random_access_iterator<const unsigned int*> >(); |
| |
| test_init_bop_bop<random_access_iterator<const int*>, input_iterator <const unsigned int*> >(); |
| test_init_bop_bop<random_access_iterator<const int*>, forward_iterator <const unsigned int*> >(); |
| test_init_bop_bop<random_access_iterator<const int*>, bidirectional_iterator<const unsigned int*> >(); |
| test_init_bop_bop<random_access_iterator<const int*>, random_access_iterator<const unsigned int*> >(); |
| |
| // just plain pointers (const vs. non-const, too) |
| test_init_bop_bop<const int*, const unsigned int *>(); |
| test_init_bop_bop<const int*, unsigned int *>(); |
| test_init_bop_bop< int*, const unsigned int *>(); |
| test_init_bop_bop< int*, unsigned int *>(); |
| } |
| |
| template <class Iter1, class Iter2, class T> |
| void |
| test_init(Iter1 first1, Iter1 last1, Iter2 first2, T init, T x) |
| { |
| BOOST_CHECK(ba::transform_reduce(first1, last1, first2, init) == x); |
| } |
| |
| template <class SIter, class UIter> |
| void |
| test_init() |
| { |
| int ia[] = {1, 2, 3, 4, 5, 6}; |
| unsigned int ua[] = {2, 4, 6, 8, 10,12}; |
| unsigned sa = sizeof(ia) / sizeof(ia[0]); |
| BOOST_CHECK(sa == sizeof(ua) / sizeof(ua[0])); // just to be sure |
| |
| test_init(SIter(ia), SIter(ia), UIter(ua), 0, 0); |
| test_init(UIter(ua), UIter(ua), SIter(ia), 1, 1); |
| test_init(SIter(ia), SIter(ia+1), UIter(ua), 0, 2); |
| test_init(UIter(ua), UIter(ua+1), SIter(ia), 2, 4); |
| test_init(SIter(ia), SIter(ia+2), UIter(ua), 0, 10); |
| test_init(UIter(ua), UIter(ua+2), SIter(ia), 3, 13); |
| test_init(SIter(ia), SIter(ia+sa), UIter(ua), 0, 182); |
| test_init(UIter(ua), UIter(ua+sa), SIter(ia), 4, 186); |
| } |
| |
| void test_transform_reduce_init() |
| { |
| // All the iterator categories |
| test_init<input_iterator <const int*>, input_iterator <const unsigned int*> >(); |
| test_init<input_iterator <const int*>, forward_iterator <const unsigned int*> >(); |
| test_init<input_iterator <const int*>, bidirectional_iterator<const unsigned int*> >(); |
| test_init<input_iterator <const int*>, random_access_iterator<const unsigned int*> >(); |
| |
| test_init<forward_iterator <const int*>, input_iterator <const unsigned int*> >(); |
| test_init<forward_iterator <const int*>, forward_iterator <const unsigned int*> >(); |
| test_init<forward_iterator <const int*>, bidirectional_iterator<const unsigned int*> >(); |
| test_init<forward_iterator <const int*>, random_access_iterator<const unsigned int*> >(); |
| |
| test_init<bidirectional_iterator<const int*>, input_iterator <const unsigned int*> >(); |
| test_init<bidirectional_iterator<const int*>, forward_iterator <const unsigned int*> >(); |
| test_init<bidirectional_iterator<const int*>, bidirectional_iterator<const unsigned int*> >(); |
| test_init<bidirectional_iterator<const int*>, random_access_iterator<const unsigned int*> >(); |
| |
| test_init<random_access_iterator<const int*>, input_iterator <const unsigned int*> >(); |
| test_init<random_access_iterator<const int*>, forward_iterator <const unsigned int*> >(); |
| test_init<random_access_iterator<const int*>, bidirectional_iterator<const unsigned int*> >(); |
| test_init<random_access_iterator<const int*>, random_access_iterator<const unsigned int*> >(); |
| |
| // just plain pointers (const vs. non-const, too) |
| test_init<const int*, const unsigned int *>(); |
| test_init<const int*, unsigned int *>(); |
| test_init< int*, const unsigned int *>(); |
| test_init< int*, unsigned int *>(); |
| } |
| |
| BOOST_AUTO_TEST_CASE( test_main ) |
| { |
| test_transform_reduce_init(); |
| test_transform_reduce_init_bop_uop(); |
| test_transform_reduce_init_bop_bop(); |
| } |