ceph/src/boost/libs/math/example/daubechies_wavelets/daubechies_scaling_memory_occupation.cpp

   1 #include <iostream>
   2 #include <boost/math/special_functions/daubechies_scaling.hpp>
   3 #include <boost/core/demangle.hpp>
   4 #include <boost/hana/for_each.hpp>
   5 #include <boost/hana/ext/std/integer_sequence.hpp>
   6
   7 int main()
   8 {
   9     boost::hana::for_each(std::make_index_sequence<18>(),
  10     [](auto i) {
  11         std::cout << std::right;
  12         auto daub = boost::math::daubechies_scaling<float, i+2>();
  13         std::cout << "The Daubechies " << std::setw(2) <<  i + 2 << " scaling function occupies "
  14                   << std::setw(12) << daub.bytes()/1000.0 << " kilobytes in relative accuracy mode in "
  15                   << boost::core::demangle(typeid(float).name()) << " precision\n";
  16     });
  17
  18     std::cout << std::endl;
  19     std::cout << std::endl;
  20     std::cout << std::endl;
  21
  22     boost::hana::for_each(std::make_index_sequence<18>(),
  23     [](auto i) {
  24         std::cout << std::right;
  25         auto daub = boost::math::daubechies_scaling<float, i+2>(-2);
  26         std::cout << "The Daubechies " << std::setw(2) <<  i + 2 << " scaling function occupies "
  27                   << std::setw(12) << daub.bytes()/1000.0 << " kilobytes in absolute accuracy mode in "
  28                   << boost::core::demangle(typeid(float).name()) << " precision\n";
  29     });
  30
  31     std::cout << std::endl;
  32     std::cout << std::endl;
  33     std::cout << std::endl;
  34
  35
  36     boost::hana::for_each(std::make_index_sequence<18>(),
  37     [](auto i) {
  38         std::cout << std::right;
  39         auto daub = boost::math::daubechies_scaling<double, i+2>();
  40         std::cout << "The Daubechies " << std::setw(2) <<  i + 2 << " scaling function occupies "
  41                   << std::setw(12) << daub.bytes()/1000.0 << " kilobytes in relative accuracy mode in "
  42                   << boost::core::demangle(typeid(double).name()) << " precision\n";
  43     });
  44
  45     std::cout << std::endl;
  46     std::cout << std::endl;
  47     std::cout << std::endl;
  48
  49     boost::hana::for_each(std::make_index_sequence<18>(),
  50     [](auto i) {
  51         std::cout << std::right;
  52         auto daub = boost::math::daubechies_scaling<double, i+2>(-2);
  53         std::cout << "The Daubechies " << std::setw(2) <<  i + 2 << " scaling function occupies "
  54                   << std::setw(12) << daub.bytes()/1000.0 << " kilobytes in absolute accuracy mode in "
  55                   << boost::core::demangle(typeid(double).name()) << " precision\n";
  56     });
  57
  58
  59 }