95 lines
2.7 KiB
C++
95 lines
2.7 KiB
C++
// { dg-options "-std=gnu++17" }
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// { dg-do run { target c++17 } }
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// Copyright (C) 2019-2020 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// C++17 29.8.7 [exclusive.scan]
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#include <numeric>
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#include <iterator>
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#include <testsuite_hooks.h>
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#include <testsuite_iterators.h>
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int a[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
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using __gnu_test::test_container;
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using __gnu_test::input_iterator_wrapper;
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using __gnu_test::output_iterator_wrapper;
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/*
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template<class InputIterator, class OutputIterator, class T>
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OutputIterator
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exclusive_scan(InputIterator, InputIterator, OutputIterator, T);
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*/
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void
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test01()
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{
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int out[10];
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test_container<int, output_iterator_wrapper> co(out);
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test_container<int, input_iterator_wrapper> ca(a);
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auto end = std::exclusive_scan(ca.begin(), ca.end(), co.begin(), 5);
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static_assert(std::is_same_v<decltype(end), decltype(co.begin())>);
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VERIFY( end.ptr == out+10 );
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VERIFY( out[0] == 5 );
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VERIFY( out[1] == 6 );
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VERIFY( out[2] == 8 );
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VERIFY( out[3] == 11 );
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VERIFY( out[4] == 15 );
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VERIFY( out[5] == 20 );
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VERIFY( out[6] == 26 );
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VERIFY( out[7] == 33 );
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VERIFY( out[8] == 41 );
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VERIFY( out[9] == 50 );
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}
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/*
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template<class InputIterator, class OutputIterator, class T,
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class BinaryOperation>
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OutputIterator
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exclusive_scan(InputIterator, InputIterator, OutputIterator, T,
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BinaryOperation);
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*/
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void
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test02()
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{
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int out[10];
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test_container<int, output_iterator_wrapper> co(out);
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test_container<int, input_iterator_wrapper> ca(a);
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auto end = std::exclusive_scan(ca.begin(), ca.end(), co.begin(), 2,
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[](int i, int j) { return 2*i + 2*j; });
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static_assert(std::is_same_v<decltype(end), decltype(co.begin())>);
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VERIFY( end.ptr == out+10 );
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VERIFY( out[0] == 2 );
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VERIFY( out[1] == 6 );
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VERIFY( out[2] == 16 );
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VERIFY( out[3] == 38 );
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VERIFY( out[4] == 84 );
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VERIFY( out[5] == 178 );
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VERIFY( out[6] == 368 );
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VERIFY( out[7] == 750 );
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VERIFY( out[8] == 1516 );
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VERIFY( out[9] == 3050 );
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}
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int
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main()
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{
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test01();
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test02();
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}
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