ceph/src/boost/libs/math/reporting/performance/test_legendre.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/legendre.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 "legendre_p.ipp"
  24 #  include "legendre_p_large.ipp"
  25
  26    add_data(legendre_p);
  27    add_data(legendre_p_large);
  28
  29    unsigned data_total = data.size();
  30
  31    screen_data([](const std::vector<double>& v){  return boost::math::legendre_p(v[0], v[1]);  }, [](const std::vector<double>& v){ return v[2];  });
  32
  33
  34 #if defined(TEST_LIBSTDCXX) && !defined(COMPILER_COMPARISON_TABLES)
  35    screen_data([](const std::vector<double>& v){  return std::tr1::legendre(v[0], v[1]);  }, [](const std::vector<double>& v){ return v[2];  });
  36 #endif
  37 #if defined(TEST_GSL) && !defined(COMPILER_COMPARISON_TABLES)
  38    screen_data([](const std::vector<double>& v){  return gsl_sf_legendre_Pl(v[0], v[1]);  }, [](const std::vector<double>& v){ return v[2];  });
  39 #endif
  40
  41    unsigned data_used = data.size();
  42    std::string function = "legendre[br](" + boost::lexical_cast<std::string>(data_used) + "/" + boost::lexical_cast<std::string>(data_total) + " tests selected)";
  43    std::string function_short = "legendre";
  44
  45    double time;
  46
  47    time = exec_timed_test([](const std::vector<double>& v){  return boost::math::legendre_p(v[0], v[1]);  });
  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::legendre_p(v[0], v[1], 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::legendre(v[0], v[1]);  });
  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_legendre_Pl(v[0], v[1]);  });
  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