ceph/src/boost/libs/math/reporting/performance/test_expint_n.cpp

   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
  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