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1 | ////////////////////////////////////////////////////////////////////////////// |
2 | // | |
3 | // (C) Copyright Ion Gaztanaga 2015-2016. | |
4 | // Distributed under the Boost Software License, Version 1.0. | |
5 | // (See accompanying file LICENSE_1_0.txt or copy at | |
6 | // http://www.boost.org/LICENSE_1_0.txt) | |
7 | // | |
8 | // See http://www.boost.org/libs/move for documentation. | |
9 | // | |
10 | ////////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | #include <cstdlib> //std::srand | |
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13 | #include <iostream> //std::cout |
14 | ||
15 | #include <boost/config.hpp> | |
16 | ||
17 | #include <boost/move/unique_ptr.hpp> | |
b32b8144 | 18 | #include <boost/move/algo/detail/merge_sort.hpp> |
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19 | |
20 | #include "order_type.hpp" | |
b32b8144 | 21 | #include "random_shuffle.hpp" |
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22 | |
23 | #include <boost/move/algo/adaptive_merge.hpp> | |
24 | #include <boost/move/core.hpp> | |
20effc67 | 25 | #include <cstdlib> |
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26 | |
27 | ||
28 | template<class T> | |
29 | bool test_random_shuffled(std::size_t const element_count, std::size_t const num_keys, std::size_t const num_iter) | |
30 | { | |
31 | boost::movelib::unique_ptr<T[]> elements(new T[element_count]); | |
32 | boost::movelib::unique_ptr<std::size_t[]> key_reps(new std::size_t[num_keys ? num_keys : element_count]); | |
33 | std::cout << "- - N: " << element_count << ", Keys: " << num_keys << ", It: " << num_iter << " \n"; | |
34 | ||
35 | //Initialize keys | |
36 | for(std::size_t i=0; i < element_count; ++i){ | |
37 | std::size_t key = num_keys ? (i % num_keys) : i; | |
38 | elements[i].key=key; | |
39 | } | |
40 | ||
41 | std::srand(0); | |
42 | ||
43 | for (std::size_t i = 0; i != num_iter; ++i) | |
44 | { | |
b32b8144 | 45 | ::random_shuffle(elements.get(), elements.get() + element_count); |
92f5a8d4 TL |
46 | for(std::size_t j = 0; j < (num_keys ? num_keys : element_count); ++j){ |
47 | key_reps[j]=0; | |
7c673cae | 48 | } |
92f5a8d4 TL |
49 | for(std::size_t j = 0; j < element_count; ++j){ |
50 | elements[j].val = key_reps[elements[j].key]++; | |
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51 | } |
52 | ||
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53 | boost::movelib::unique_ptr<char[]> buf(new char [sizeof(T)*(element_count-element_count/2)]); |
54 | ||
7c673cae | 55 | std::size_t const split = std::size_t(std::rand()) % element_count; |
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56 | boost::movelib::merge_sort(elements.get(), elements.get()+split, order_type_less(), (T*)buf.get()); |
57 | boost::movelib::merge_sort(elements.get()+split, elements.get()+element_count, order_type_less(), (T*)buf.get()); | |
7c673cae | 58 | |
b32b8144 | 59 | boost::movelib::adaptive_merge(elements.get(), elements.get()+split, elements.get()+element_count, order_type_less()); |
7c673cae | 60 | |
b32b8144 | 61 | if (!is_order_type_ordered(elements.get(), element_count)) |
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62 | { |
63 | std::cout << "\n ERROR\n"; | |
20effc67 | 64 | std::abort(); |
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65 | } |
66 | } | |
67 | return true; | |
68 | } | |
69 | ||
92f5a8d4 TL |
70 | void instantiate_smalldiff_iterators() |
71 | { | |
72 | typedef randit<int, short> short_rand_it_t; | |
73 | boost::movelib::adaptive_merge(short_rand_it_t(), short_rand_it_t(), short_rand_it_t(), less_int()); | |
74 | ||
75 | typedef randit<int, signed char> schar_rand_it_t; | |
76 | boost::movelib::adaptive_merge(schar_rand_it_t(), schar_rand_it_t(), schar_rand_it_t(), less_int()); | |
77 | } | |
78 | ||
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79 | int main() |
80 | { | |
92f5a8d4 TL |
81 | instantiate_smalldiff_iterators(); |
82 | ||
7c673cae | 83 | const std::size_t NIter = 100; |
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84 | test_random_shuffled<order_move_type>(10001, 3, NIter); |
85 | test_random_shuffled<order_move_type>(10001, 65, NIter); | |
86 | test_random_shuffled<order_move_type>(10001, 101, NIter); | |
87 | test_random_shuffled<order_move_type>(10001, 1023, NIter); | |
88 | test_random_shuffled<order_move_type>(10001, 4095, NIter); | |
89 | test_random_shuffled<order_move_type>(10001, 0, NIter); | |
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90 | |
91 | return 0; | |
92 | } |