1 //---------------------------------------------------------------------------// 2 // Copyright (c) 2014 Roshan <thisisroshansmail@gmail.com> 3 // 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://boostorg.github.com/compute for more information. 9 //---------------------------------------------------------------------------// 10 11 #include <algorithm> 12 #include <iostream> 13 #include <numeric> 14 #include <vector> 15 16 #include "perf.hpp" 17 rand_int()18int rand_int() 19 { 20 return static_cast<int>((rand() / double(RAND_MAX)) * 25.0); 21 } 22 main(int argc,char * argv[])23int main(int argc, char *argv[]) 24 { 25 perf_parse_args(argc, argv); 26 std::cout << "size: " << PERF_N << std::endl; 27 28 // create vector of random numbers on the host 29 std::vector<int> host_vector(PERF_N); 30 std::generate(host_vector.begin(), host_vector.end(), rand_int); 31 32 perf_timer t; 33 for(size_t trial = 0; trial < PERF_TRIALS; trial++){ 34 t.start(); 35 std::reverse(host_vector.begin(), host_vector.end()); 36 t.stop(); 37 } 38 std::cout << "time: " << t.min_time() / 1e6 << " ms" << std::endl; 39 40 return 0; 41 } 42