ceph/src/boost/libs/math/reporting/performance/test_expm1.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/expm1.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 int main()
  19 {
  20    typedef double T;
  21 #define SC_(x) static_cast<double>(x)
  22 #  include "../../test/log1p_expm1_data.ipp"
  23
  24    add_data(log1p_expm1_data);
  25
  26    unsigned data_total = data.size();
  27
  28    screen_data([](const std::vector<double>& v){  return boost::math::expm1(v[0]);  }, [](const std::vector<double>& v){ return v[2];  });
  29
  30
  31 #if defined(TEST_C99) && !defined(COMPILER_COMPARISON_TABLES)
  32    screen_data([](const std::vector<double>& v){  return ::expm1(v[0]);  }, [](const std::vector<double>& v){ return v[2];  });
  33 #endif
  34 #if defined(TEST_LIBSTDCXX) && !defined(COMPILER_COMPARISON_TABLES)
  35    screen_data([](const std::vector<double>& v){  return std::tr1::expm1(v[0]);  }, [](const std::vector<double>& v){ return v[2];  });
  36 #endif
  37
  38    unsigned data_used = data.size();
  39    std::string function = "expm1[br](" + boost::lexical_cast<std::string>(data_used) + "/" + boost::lexical_cast<std::string>(data_total) + " tests selected)";
  40    std::string function_short = "expm1";
  41
  42    double time = exec_timed_test([](const std::vector<double>& v){  return boost::math::expm1(v[0]);  });
  43    std::cout << time << std::endl;
  44 #if !defined(COMPILER_COMPARISON_TABLES) && (defined(TEST_GSL) || defined(TEST_RMATH) || defined(TEST_C99) || defined(TEST_LIBSTDCXX))
  45    report_execution_time(time, std::string("Library Comparison with ") + std::string(compiler_name()) + std::string(" on ") + platform_name(), function, boost_name());
  46 #endif
  47    report_execution_time(time, std::string("Compiler Comparison on ") + std::string(platform_name()), function_short, compiler_name() + std::string("[br]") + boost_name());
  48    //
  49    // Boost again, but with promotion to long double turned off:
  50    //
  51 #if !defined(COMPILER_COMPARISON_TABLES)
  52    if(sizeof(long double) != sizeof(double))
  53    {
  54       double time = exec_timed_test([](const std::vector<double>& v){  return boost::math::expm1(v[0], boost::math::policies::make_policy(boost::math::policies::promote_double<false>()));  });
  55       std::cout << time << std::endl;
  56 #if !defined(COMPILER_COMPARISON_TABLES) && (defined(TEST_GSL) || defined(TEST_RMATH) || defined(TEST_C99) || defined(TEST_LIBSTDCXX))
  57       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>");
  58 #endif
  59       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>");
  60    }
  61 #endif
  62
  63
  64 #if defined(TEST_C99) && !defined(COMPILER_COMPARISON_TABLES)
  65    time = exec_timed_test([](const std::vector<double>& v){  return ::expm1(v[0]);  });
  66    std::cout << time << std::endl;
  67    report_execution_time(time, std::string("Library Comparison with ") + std::string(compiler_name()) + std::string(" on ") + platform_name(), function, "math.h");
  68 #endif
  69 #if defined(TEST_LIBSTDCXX) && !defined(COMPILER_COMPARISON_TABLES)
  70    time = exec_timed_test([](const std::vector<double>& v){  return std::tr1::expm1(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
  75
  76    return 0;
  77 }
  78