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Diffstat (limited to 'src/boost/libs/move/test/adaptive_merge_test.cpp')
-rw-r--r-- | src/boost/libs/move/test/adaptive_merge_test.cpp | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/src/boost/libs/move/test/adaptive_merge_test.cpp b/src/boost/libs/move/test/adaptive_merge_test.cpp new file mode 100644 index 00000000..1a647076 --- /dev/null +++ b/src/boost/libs/move/test/adaptive_merge_test.cpp @@ -0,0 +1,91 @@ +////////////////////////////////////////////////////////////////////////////// +// +// (C) Copyright Ion Gaztanaga 2015-2016. +// 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) +// +// See http://www.boost.org/libs/move for documentation. +// +////////////////////////////////////////////////////////////////////////////// + +#include <cstdlib> //std::srand +#include <iostream> //std::cout + +#include <boost/config.hpp> + +#include <boost/move/unique_ptr.hpp> +#include <boost/move/algo/detail/merge_sort.hpp> + +#include "order_type.hpp" +#include "random_shuffle.hpp" + +#include <boost/move/algo/adaptive_merge.hpp> +#include <boost/move/core.hpp> + + +template<class T> +bool test_random_shuffled(std::size_t const element_count, std::size_t const num_keys, std::size_t const num_iter) +{ + boost::movelib::unique_ptr<T[]> elements(new T[element_count]); + boost::movelib::unique_ptr<std::size_t[]> key_reps(new std::size_t[num_keys ? num_keys : element_count]); + std::cout << "- - N: " << element_count << ", Keys: " << num_keys << ", It: " << num_iter << " \n"; + + //Initialize keys + for(std::size_t i=0; i < element_count; ++i){ + std::size_t key = num_keys ? (i % num_keys) : i; + elements[i].key=key; + } + + std::srand(0); + + for (std::size_t i = 0; i != num_iter; ++i) + { + ::random_shuffle(elements.get(), elements.get() + element_count); + for(std::size_t j = 0; j < (num_keys ? num_keys : element_count); ++j){ + key_reps[j]=0; + } + for(std::size_t j = 0; j < element_count; ++j){ + elements[j].val = key_reps[elements[j].key]++; + } + + boost::movelib::unique_ptr<char[]> buf(new char [sizeof(T)*(element_count-element_count/2)]); + + std::size_t const split = std::size_t(std::rand()) % element_count; + boost::movelib::merge_sort(elements.get(), elements.get()+split, order_type_less(), (T*)buf.get()); + boost::movelib::merge_sort(elements.get()+split, elements.get()+element_count, order_type_less(), (T*)buf.get()); + + boost::movelib::adaptive_merge(elements.get(), elements.get()+split, elements.get()+element_count, order_type_less()); + + if (!is_order_type_ordered(elements.get(), element_count)) + { + std::cout << "\n ERROR\n"; + throw int(0); + } + } + return true; +} + +void instantiate_smalldiff_iterators() +{ + typedef randit<int, short> short_rand_it_t; + boost::movelib::adaptive_merge(short_rand_it_t(), short_rand_it_t(), short_rand_it_t(), less_int()); + + typedef randit<int, signed char> schar_rand_it_t; + boost::movelib::adaptive_merge(schar_rand_it_t(), schar_rand_it_t(), schar_rand_it_t(), less_int()); +} + +int main() +{ + instantiate_smalldiff_iterators(); + + const std::size_t NIter = 100; + test_random_shuffled<order_move_type>(10001, 3, NIter); + test_random_shuffled<order_move_type>(10001, 65, NIter); + test_random_shuffled<order_move_type>(10001, 101, NIter); + test_random_shuffled<order_move_type>(10001, 1023, NIter); + test_random_shuffled<order_move_type>(10001, 4095, NIter); + test_random_shuffled<order_move_type>(10001, 0, NIter); + + return 0; +} |