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Library/boost/libs/algorithm/test/transform_reduce_test.cpp
188 строк
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PatoFlamejanteTV
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19 дек 2024, 19:11
19 дек 2024, 19:11
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/* 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(); }