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 "expinti_data.ipp"
24 #include "expinti_data_double.ipp"
25
26 add_data(expinti_data);
27 add_data(expinti_data_double);
28
29 unsigned data_total = data.size();
30
31 screen_data([](const std::vector<double>& v){ return boost::math::expint(v[0]); }, [](const std::vector<double>& v){ return v[1]; });
32
33
34 #if defined(TEST_LIBSTDCXX) && !defined(COMPILER_COMPARISON_TABLES)
35 screen_data([](const std::vector<double>& v){ return std::tr1::expint(v[0]); }, [](const std::vector<double>& v){ return v[1]; });
36 #endif
37 #if defined(TEST_GSL) && !defined(COMPILER_COMPARISON_TABLES)
38 screen_data([](const std::vector<double>& v){ return gsl_sf_expint_Ei(v[0]); }, [](const std::vector<double>& v){ return v[1]; });
39 #endif
40
41 unsigned data_used = data.size();
42 std::string function = "expint[br](" + boost::lexical_cast<std::string>(data_used) + "/" + boost::lexical_cast<std::string>(data_total) + " tests selected)";
43 std::string function_short = "expint";
44
45 double time;
46
47 time = exec_timed_test([](const std::vector<double>& v){ return boost::math::expint(v[0]); });
48 std::cout << time << std::endl;
49 #if !defined(COMPILER_COMPARISON_TABLES) && (defined(TEST_GSL) || defined(TEST_RMATH) || defined(TEST_LIBSTDCXX))
50 report_execution_time(time, std::string("Library Comparison with ") + std::string(compiler_name()) + std::string(" on ") + platform_name(), function, boost_name());
51 #endif
52 report_execution_time(time, std::string("Compiler Comparison on ") + std::string(platform_name()), function_short, compiler_name() + std::string("[br]") + boost_name());
53 //
54 // Boost again, but with promotion to long double turned off:
55 //
56 #if !defined(COMPILER_COMPARISON_TABLES)
57 if(sizeof(long double) != sizeof(double))
58 {
59 time = exec_timed_test([](const std::vector<double>& v){ return boost::math::expint(v[0], boost::math::policies::make_policy(boost::math::policies::promote_double<false>())); });
60 std::cout << time << std::endl;
61 #if !defined(COMPILER_COMPARISON_TABLES) && (defined(TEST_GSL) || defined(TEST_RMATH) || defined(TEST_LIBSTDCXX))
62 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>");
63 #endif
64 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>");
65 }
66 #endif
67
68
69 #if defined(TEST_LIBSTDCXX) && !defined(COMPILER_COMPARISON_TABLES)
70 time = exec_timed_test([](const std::vector<double>& v){ return std::tr1::expint(v[0]); });
71 std::cout << time << std::endl;
72 report_execution_time(time, std::string("Library Comparison with ") + std::string(compiler_name()) + std::string(" on ") + platform_name(), function, "tr1/cmath");
73 #endif
74 #if defined(TEST_GSL) && !defined(COMPILER_COMPARISON_TABLES)
75 time = exec_timed_test([](const std::vector<double>& v){ return gsl_sf_expint_Ei(v[0]); });
76 std::cout << time << std::endl;
77 report_execution_time(time, std::string("Library Comparison with ") + std::string(compiler_name()) + std::string(" on ") + platform_name(), function, "GSL " GSL_VERSION);
78 #endif
79
80 return 0;
81 }
82
83