1bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 2bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 3f5256e16dfc425c1d466f6308d4026d529ce9e0bHoward Hinnant// The LLVM Compiler Infrastructure 4bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 5b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// This file is dual licensed under the MIT and the University of Illinois Open 6b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// Source Licenses. See LICENSE.TXT for details. 7bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// 8bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant//===----------------------------------------------------------------------===// 9bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 10bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// <algorithm> 11bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 12eb564e76cc3904d811c981a50ecce0659f444cc9Howard Hinnant// template<InputIterator InIter, RandomAccessIterator RAIter> 13eb564e76cc3904d811c981a50ecce0659f444cc9Howard Hinnant// requires ShuffleIterator<RAIter> 14eb564e76cc3904d811c981a50ecce0659f444cc9Howard Hinnant// && OutputIterator<RAIter, InIter::reference> 15eb564e76cc3904d811c981a50ecce0659f444cc9Howard Hinnant// && HasLess<InIter::value_type, RAIter::value_type> 16eb564e76cc3904d811c981a50ecce0659f444cc9Howard Hinnant// && LessThanComparable<RAIter::value_type> 17bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// RAIter 18bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant// partial_sort_copy(InIter first, InIter last, RAIter result_first, RAIter result_last); 19bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 20bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <algorithm> 21bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant#include <cassert> 22bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 2383e2c4d877fe2d7793868b1c6a5d9525a7c4d431Marshall Clow#include "test_iterators.h" 24bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 25bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnanttemplate <class Iter> 26bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantvoid 27bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnanttest_larger_sorts(unsigned N, unsigned M) 28bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 29bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant int* input = new int[N]; 30bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant int* output = new int[M]; 31bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant for (int i = 0; i < N; ++i) 32bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant input[i] = i; 33bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::random_shuffle(input, input+N); 34bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant int* r = std::partial_sort_copy(Iter(input), Iter(input+N), output, output+M); 35bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant int* e = output + std::min(N, M); 36bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(r == e); 37bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant int i = 0; 38bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant for (int* x = output; x < e; ++x, ++i) 39bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(*x == i); 40bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant delete [] output; 41bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant delete [] input; 42bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 43bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 44bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnanttemplate <class Iter> 45bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantvoid 46bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnanttest_larger_sorts(unsigned N) 47bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 48bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_larger_sorts<Iter>(N, 0); 49bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_larger_sorts<Iter>(N, 1); 50bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_larger_sorts<Iter>(N, 2); 51bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_larger_sorts<Iter>(N, 3); 52bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_larger_sorts<Iter>(N, N/2-1); 53bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_larger_sorts<Iter>(N, N/2); 54bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_larger_sorts<Iter>(N, N/2+1); 55bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_larger_sorts<Iter>(N, N-2); 56bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_larger_sorts<Iter>(N, N-1); 57bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_larger_sorts<Iter>(N, N); 58bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_larger_sorts<Iter>(N, N+1000); 59bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 60bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 61bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnanttemplate <class Iter> 62bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantvoid 63bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnanttest() 64bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 65bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_larger_sorts<Iter>(0, 100); 66bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_larger_sorts<Iter>(10); 67bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_larger_sorts<Iter>(256); 68bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_larger_sorts<Iter>(257); 69bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_larger_sorts<Iter>(499); 70bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_larger_sorts<Iter>(500); 71bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_larger_sorts<Iter>(997); 72bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_larger_sorts<Iter>(1000); 73bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test_larger_sorts<Iter>(1009); 74bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 75bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant 76bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnantint main() 77bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant{ 78bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant int i = 0; 79bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant std::partial_sort_copy(&i, &i, &i, &i+5); 80bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant assert(i == 0); 81bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test<input_iterator<const int*> >(); 82bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test<forward_iterator<const int*> >(); 83bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test<bidirectional_iterator<const int*> >(); 84bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test<random_access_iterator<const int*> >(); 85bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant test<const int*>(); 86bc8d3f97eb5c958007f2713238472e0c1c8fe02Howard Hinnant} 87