ceph/src/boost/libs/math/reporting/performance/test_igamma.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/gamma.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 "igamma_med_data.ipp"
  24 #  include "igamma_small_data.ipp"
  25 #  include "igamma_big_data.ipp"
  26 #  include "igamma_int_data.ipp"
  27
  28    add_data(igamma_med_data);
  29    add_data(igamma_small_data);
  30    add_data(igamma_big_data);
  31    add_data(igamma_int_data);
  32
  33    unsigned data_total = data.size();
  34
  35    screen_data([](const std::vector<double>& v){  return boost::math::tgamma(v[0], v[1]);  }, [](const std::vector<double>& v){ return v[2];  });
  36
  37
  38 #if defined(TEST_GSL) && !defined(COMPILER_COMPARISON_TABLES)
  39    screen_data([](const std::vector<double>& v){  return gsl_sf_gamma_inc(v[0], v[1]);  }, [](const std::vector<double>& v){ return v[2];  });
  40 #endif
  41
  42    unsigned data_used = data.size();
  43    std::string function = "tgamma (incomplete)[br](" + boost::lexical_cast<std::string>(data_used) + "/" + boost::lexical_cast<std::string>(data_total) + " tests selected)";
  44    std::string function_short = "tgamma (incomplete)";
  45
  46    double time;
  47
  48    time = exec_timed_test([](const std::vector<double>& v){  return boost::math::tgamma(v[0], v[1]);  });
  49    std::cout << time << std::endl;
  50 #if !defined(COMPILER_COMPARISON_TABLES) && (defined(TEST_GSL) || defined(TEST_RMATH))
  51    report_execution_time(time, std::string("Library Comparison with ") + std::string(compiler_name()) + std::string(" on ") + platform_name(), function, boost_name());
  52 #endif
  53    report_execution_time(time, std::string("Compiler Comparison on ") + std::string(platform_name()), function_short, compiler_name() + std::string("[br]") + boost_name());
  54    //
  55    // Boost again, but with promotion to long double turned off:
  56    //
  57 #if !defined(COMPILER_COMPARISON_TABLES)
  58    if(sizeof(long double) != sizeof(double))
  59    {
  60       time = exec_timed_test([](const std::vector<double>& v){  return boost::math::tgamma(v[0], v[1], boost::math::policies::make_policy(boost::math::policies::promote_double<false>()));  });
  61       std::cout << time << std::endl;
  62 #if !defined(COMPILER_COMPARISON_TABLES) && (defined(TEST_GSL) || defined(TEST_RMATH))
  63       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>");
  64 #endif
  65       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>");
  66    }
  67 #endif
  68
  69
  70 #if defined(TEST_GSL) && !defined(COMPILER_COMPARISON_TABLES)
  71    time = exec_timed_test([](const std::vector<double>& v){  return gsl_sf_gamma_inc(v[0], v[1]);  });
  72    std::cout << time << std::endl;
  73    report_execution_time(time, std::string("Library Comparison with ") + std::string(compiler_name()) + std::string(" on ") + platform_name(), function, "GSL " GSL_VERSION);
  74 #endif
  75
  76    return 0;
  77 }
  78