1 // Copyright John Maddock 2015.
2 // Use, modification and distribution are subject to the
3 // Boost Software License, Version 1.0. (See accompanying file
4 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
5
6 #ifdef _MSC_VER
7 # pragma warning (disable : 4224)
8 #endif
9
10 #include <boost/math/special_functions/expint.hpp>
11 #include <boost/array.hpp>
12 #include <boost/lexical_cast.hpp>
13 #include "../../test/table_type.hpp"
14 #include "table_helper.hpp"
15 #include "performance.hpp"
16 #include <iostream>
17
18 typedef double T;
19 #define SC_(x) static_cast<double>(x)
20
main()21 int main()
22 {
23 #include "expint_data.ipp"
24 #include "expint_small_data.ipp"
25 #include "expint_1_data.ipp"
26
27 add_data(expint_data);
28 add_data(expint_small_data);
29 add_data(expint_1_data);
30
31 unsigned data_total = data.size();
32
33 screen_data([](const std::vector<double>& v){ return boost::math::expint(static_cast<int>(v[0]), v[1]); }, [](const std::vector<double>& v){ return v[2]; });
34
35
36 #if defined(TEST_GSL) && !defined(COMPILER_COMPARISON_TABLES)
37 screen_data([](const std::vector<double>& v){ return gsl_sf_expint_En(static_cast<int>(v[0]), v[1]); }, [](const std::vector<double>& v){ return v[2]; });
38 #endif
39
40 unsigned data_used = data.size();
41 std::string function = "expint (En)[br](" + boost::lexical_cast<std::string>(data_used) + "/" + boost::lexical_cast<std::string>(data_total) + " tests selected)";
42 std::string function_short = "expint (En)";
43
44 double time;
45
46 time = exec_timed_test([](const std::vector<double>& v){ return boost::math::expint(static_cast<int>(v[0]), v[1]); });
47 std::cout << time << std::endl;
48 #if !defined(COMPILER_COMPARISON_TABLES) && (defined(TEST_GSL) || defined(TEST_RMATH))
49 report_execution_time(time, std::string("Library Comparison with ") + std::string(compiler_name()) + std::string(" on ") + platform_name(), function, boost_name());
50 #endif
51 report_execution_time(time, std::string("Compiler Comparison on ") + std::string(platform_name()), function_short, compiler_name() + std::string("[br]") + boost_name());
52 //
53 // Boost again, but with promotion to long double turned off:
54 //
55 #if !defined(COMPILER_COMPARISON_TABLES)
56 if(sizeof(long double) != sizeof(double))
57 {
58 time = exec_timed_test([](const std::vector<double>& v){ return boost::math::expint(static_cast<int>(v[0]), v[1], boost::math::policies::make_policy(boost::math::policies::promote_double<false>())); });
59 std::cout << time << std::endl;
60 #if !defined(COMPILER_COMPARISON_TABLES) && (defined(TEST_GSL) || defined(TEST_RMATH))
61 report_execution_time(time, std::string("Library Comparison with ") + std::string(compiler_name()) + std::string(" on ") + platform_name(), function, boost_name() + "[br]promote_double<false>");
62 #endif
63 report_execution_time(time, std::string("Compiler Comparison on ") + std::string(platform_name()), function_short, compiler_name() + std::string("[br]") + boost_name() + "[br]promote_double<false>");
64 }
65 #endif
66
67
68 #if defined(TEST_GSL) && !defined(COMPILER_COMPARISON_TABLES)
69 time = exec_timed_test([](const std::vector<double>& v){ return gsl_sf_expint_En(static_cast<int>(v[0]), v[1]); });
70 std::cout << time << std::endl;
71 report_execution_time(time, std::string("Library Comparison with ") + std::string(compiler_name()) + std::string(" on ") + platform_name(), function, "GSL " GSL_VERSION);
72 #endif
73
74 return 0;
75 }
76
77