189 lines
9.0 KiB
C++
189 lines
9.0 KiB
C++
/*
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Copyright (c) Marshall Clow 2013.
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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For more information, see http://www.boost.org
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*/
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#include <boost/config.hpp>
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#include <boost/algorithm/cxx17/transform_reduce.hpp>
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#include "iterator_test.hpp"
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#define BOOST_TEST_MAIN
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#include <boost/test/unit_test.hpp>
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namespace ba = boost::algorithm;
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template <class _Tp>
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struct identity
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{
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const _Tp& operator()(const _Tp& __x) const { return __x;}
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};
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template <class _Tp>
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struct twice
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{
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const _Tp operator()(const _Tp& __x) const { return 2 * __x; }
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};
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template <class Iter1, class T, class BOp, class UOp>
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void
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test_init_bop_uop(Iter1 first1, Iter1 last1, T init, BOp bOp, UOp uOp, T x)
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{
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BOOST_CHECK(ba::transform_reduce(first1, last1, init, bOp, uOp) == x);
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}
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template <class Iter>
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void
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test_init_bop_uop()
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{
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int ia[] = {1, 2, 3, 4, 5, 6};
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unsigned sa = sizeof(ia) / sizeof(ia[0]);
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test_init_bop_uop(Iter(ia), Iter(ia), 0, std::plus<int>(), identity<int>(), 0);
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test_init_bop_uop(Iter(ia), Iter(ia), 1, std::multiplies<int>(), identity<int>(), 1);
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test_init_bop_uop(Iter(ia), Iter(ia+1), 0, std::multiplies<int>(), identity<int>(), 0);
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test_init_bop_uop(Iter(ia), Iter(ia+1), 2, std::plus<int>(), identity<int>(), 3);
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test_init_bop_uop(Iter(ia), Iter(ia+2), 0, std::plus<int>(), identity<int>(), 3);
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test_init_bop_uop(Iter(ia), Iter(ia+2), 3, std::multiplies<int>(), identity<int>(), 6);
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test_init_bop_uop(Iter(ia), Iter(ia+sa), 4, std::multiplies<int>(), identity<int>(), 2880);
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test_init_bop_uop(Iter(ia), Iter(ia+sa), 4, std::plus<int>(), identity<int>(), 25);
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test_init_bop_uop(Iter(ia), Iter(ia), 0, std::plus<int>(), twice<int>(), 0);
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test_init_bop_uop(Iter(ia), Iter(ia), 1, std::multiplies<int>(), twice<int>(), 1);
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test_init_bop_uop(Iter(ia), Iter(ia+1), 0, std::multiplies<int>(), twice<int>(), 0);
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test_init_bop_uop(Iter(ia), Iter(ia+1), 2, std::plus<int>(), twice<int>(), 4);
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test_init_bop_uop(Iter(ia), Iter(ia+2), 0, std::plus<int>(), twice<int>(), 6);
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test_init_bop_uop(Iter(ia), Iter(ia+2), 3, std::multiplies<int>(), twice<int>(), 24);
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test_init_bop_uop(Iter(ia), Iter(ia+sa), 4, std::multiplies<int>(), twice<int>(), 184320); // 64 * 2880
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test_init_bop_uop(Iter(ia), Iter(ia+sa), 4, std::plus<int>(), twice<int>(), 46);
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}
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void test_transform_reduce_init_bop_uop()
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{
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BOOST_CHECK ( true );
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}
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template <class Iter1, class Iter2, class T, class Op1, class Op2>
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void
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test_init_bop_bop(Iter1 first1, Iter1 last1, Iter2 first2, T init, Op1 op1, Op2 op2, T x)
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{
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BOOST_CHECK(ba::transform_reduce(first1, last1, first2, init, op1, op2) == x);
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}
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template <class SIter, class UIter>
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void
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test_init_bop_bop()
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{
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int ia[] = {1, 2, 3, 4, 5, 6};
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unsigned int ua[] = {2, 4, 6, 8, 10,12};
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unsigned sa = sizeof(ia) / sizeof(ia[0]);
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BOOST_CHECK(sa == sizeof(ua) / sizeof(ua[0])); // just to be sure
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test_init_bop_bop(SIter(ia), SIter(ia), UIter(ua), 0, std::plus<int>(), std::multiplies<int>(), 0);
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test_init_bop_bop(UIter(ua), UIter(ua), SIter(ia), 1, std::multiplies<int>(), std::plus<int>(), 1);
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test_init_bop_bop(SIter(ia), SIter(ia+1), UIter(ua), 0, std::multiplies<int>(), std::plus<int>(), 0);
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test_init_bop_bop(UIter(ua), UIter(ua+1), SIter(ia), 2, std::plus<int>(), std::multiplies<int>(), 4);
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test_init_bop_bop(SIter(ia), SIter(ia+2), UIter(ua), 0, std::plus<int>(), std::multiplies<int>(), 10);
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test_init_bop_bop(UIter(ua), UIter(ua+2), SIter(ia), 3, std::multiplies<int>(), std::plus<int>(), 54);
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test_init_bop_bop(SIter(ia), SIter(ia+sa), UIter(ua), 4, std::multiplies<int>(), std::plus<int>(), 2099520);
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test_init_bop_bop(UIter(ua), UIter(ua+sa), SIter(ia), 4, std::plus<int>(), std::multiplies<int>(), 186);
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}
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void test_transform_reduce_init_bop_bop()
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{
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// All the iterator categories
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test_init_bop_bop<input_iterator <const int*>, input_iterator <const unsigned int*> >();
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test_init_bop_bop<input_iterator <const int*>, forward_iterator <const unsigned int*> >();
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test_init_bop_bop<input_iterator <const int*>, bidirectional_iterator<const unsigned int*> >();
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test_init_bop_bop<input_iterator <const int*>, random_access_iterator<const unsigned int*> >();
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test_init_bop_bop<forward_iterator <const int*>, input_iterator <const unsigned int*> >();
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test_init_bop_bop<forward_iterator <const int*>, forward_iterator <const unsigned int*> >();
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test_init_bop_bop<forward_iterator <const int*>, bidirectional_iterator<const unsigned int*> >();
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test_init_bop_bop<forward_iterator <const int*>, random_access_iterator<const unsigned int*> >();
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test_init_bop_bop<bidirectional_iterator<const int*>, input_iterator <const unsigned int*> >();
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test_init_bop_bop<bidirectional_iterator<const int*>, forward_iterator <const unsigned int*> >();
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test_init_bop_bop<bidirectional_iterator<const int*>, bidirectional_iterator<const unsigned int*> >();
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test_init_bop_bop<bidirectional_iterator<const int*>, random_access_iterator<const unsigned int*> >();
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test_init_bop_bop<random_access_iterator<const int*>, input_iterator <const unsigned int*> >();
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test_init_bop_bop<random_access_iterator<const int*>, forward_iterator <const unsigned int*> >();
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test_init_bop_bop<random_access_iterator<const int*>, bidirectional_iterator<const unsigned int*> >();
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test_init_bop_bop<random_access_iterator<const int*>, random_access_iterator<const unsigned int*> >();
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// just plain pointers (const vs. non-const, too)
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test_init_bop_bop<const int*, const unsigned int *>();
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test_init_bop_bop<const int*, unsigned int *>();
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test_init_bop_bop< int*, const unsigned int *>();
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test_init_bop_bop< int*, unsigned int *>();
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}
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template <class Iter1, class Iter2, class T>
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void
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test_init(Iter1 first1, Iter1 last1, Iter2 first2, T init, T x)
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{
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BOOST_CHECK(ba::transform_reduce(first1, last1, first2, init) == x);
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}
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template <class SIter, class UIter>
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void
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test_init()
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{
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int ia[] = {1, 2, 3, 4, 5, 6};
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unsigned int ua[] = {2, 4, 6, 8, 10,12};
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unsigned sa = sizeof(ia) / sizeof(ia[0]);
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BOOST_CHECK(sa == sizeof(ua) / sizeof(ua[0])); // just to be sure
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test_init(SIter(ia), SIter(ia), UIter(ua), 0, 0);
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test_init(UIter(ua), UIter(ua), SIter(ia), 1, 1);
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test_init(SIter(ia), SIter(ia+1), UIter(ua), 0, 2);
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test_init(UIter(ua), UIter(ua+1), SIter(ia), 2, 4);
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test_init(SIter(ia), SIter(ia+2), UIter(ua), 0, 10);
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test_init(UIter(ua), UIter(ua+2), SIter(ia), 3, 13);
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test_init(SIter(ia), SIter(ia+sa), UIter(ua), 0, 182);
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test_init(UIter(ua), UIter(ua+sa), SIter(ia), 4, 186);
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}
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void test_transform_reduce_init()
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{
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// All the iterator categories
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test_init<input_iterator <const int*>, input_iterator <const unsigned int*> >();
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test_init<input_iterator <const int*>, forward_iterator <const unsigned int*> >();
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test_init<input_iterator <const int*>, bidirectional_iterator<const unsigned int*> >();
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test_init<input_iterator <const int*>, random_access_iterator<const unsigned int*> >();
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test_init<forward_iterator <const int*>, input_iterator <const unsigned int*> >();
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test_init<forward_iterator <const int*>, forward_iterator <const unsigned int*> >();
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test_init<forward_iterator <const int*>, bidirectional_iterator<const unsigned int*> >();
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test_init<forward_iterator <const int*>, random_access_iterator<const unsigned int*> >();
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test_init<bidirectional_iterator<const int*>, input_iterator <const unsigned int*> >();
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test_init<bidirectional_iterator<const int*>, forward_iterator <const unsigned int*> >();
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test_init<bidirectional_iterator<const int*>, bidirectional_iterator<const unsigned int*> >();
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test_init<bidirectional_iterator<const int*>, random_access_iterator<const unsigned int*> >();
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test_init<random_access_iterator<const int*>, input_iterator <const unsigned int*> >();
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test_init<random_access_iterator<const int*>, forward_iterator <const unsigned int*> >();
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test_init<random_access_iterator<const int*>, bidirectional_iterator<const unsigned int*> >();
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test_init<random_access_iterator<const int*>, random_access_iterator<const unsigned int*> >();
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// just plain pointers (const vs. non-const, too)
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test_init<const int*, const unsigned int *>();
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test_init<const int*, unsigned int *>();
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test_init< int*, const unsigned int *>();
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test_init< int*, unsigned int *>();
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}
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BOOST_AUTO_TEST_CASE( test_main )
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{
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test_transform_reduce_init();
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test_transform_reduce_init_bop_uop();
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test_transform_reduce_init_bop_bop();
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}
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