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- /*=============================================================================
- Copyright (c) 2001-2010 Joel de Guzman
- 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)
- ==============================================================================*/
- #include "../measure.hpp"
- #include <string>
- #include <vector>
- #include <cstdlib>
- #include <boost/spirit/include/qi.hpp>
- namespace
- {
- ///////////////////////////////////////////////////////////////////////////
- // Generate a random number string with N digits
- std::string
- gen_int(int digits)
- {
- std::string result;
- if (rand()%2) // Prepend a '-'
- result += '-';
- result += '1' + (rand()%9); // The first digit cannot be '0'
-
- for (int i = 1; i < digits; ++i) // Generate the remaining digits
- result += '0' + (rand()%10);
- return result;
- }
-
- std::string numbers[9];
- char const* first[9];
- char const* last[9];
- ///////////////////////////////////////////////////////////////////////////
- struct atoi_test : test::base
- {
- void benchmark()
- {
- for (int i = 0; i < 9; ++i)
- this->val += atoi(first[i]);
- }
- };
-
- ///////////////////////////////////////////////////////////////////////////
- struct strtol_test : test::base
- {
- void benchmark()
- {
- for (int i = 0; i < 9; ++i)
- this->val += strtol(first[i], const_cast<char**>(&last[i]), 10);
- }
- };
-
- ///////////////////////////////////////////////////////////////////////////
- struct spirit_int_test : test::base
- {
- static int parse(char const* first, char const* last)
- {
- int n;
- namespace qi = boost::spirit::qi;
- using qi::int_;
- qi::parse(first, last, int_, n);
- return n;
- }
- void benchmark()
- {
- for (int i = 0; i < 9; ++i)
- this->val += parse(first[i], last[i]);
- }
- };
- }
- int main()
- {
- // Seed the random generator
- srand(time(0));
-
- // Generate random integers with 1 .. 9 digits
- // We test only 9 digits to avoid overflow
- std::cout << "///////////////////////////////////////////////////////////////////////////" << std::endl;
- std::cout << "Numbers to test:" << std::endl;
- for (int i = 0; i < 9; ++i)
- {
- numbers[i] = gen_int(i+1);
- first[i] = numbers[i].c_str();
- last[i] = first[i];
- while (*last[i])
- last[i]++;
- std::cout << i+1 << " digit number:" << numbers[i] << std::endl;
- }
- std::cout << "///////////////////////////////////////////////////////////////////////////" << std::endl;
- BOOST_SPIRIT_TEST_BENCHMARK(
- 10000000, // This is the maximum repetitions to execute
- (atoi_test)
- (strtol_test)
- (spirit_int_test)
- )
-
- // This is ultimately responsible for preventing all the test code
- // from being optimized away. Change this to return 0 and you
- // unplug the whole test's life support system.
- return test::live_code != 0;
- }
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