rational_tests.cpp

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//  (C) Copyright John Maddock 2007.
//  Use, modification and distribution are subject to the
//  Boost Software License, Version 1.0. (See accompanying file
//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

#include <boost/math/bindings/rr.hpp>
#include <boost/tr1/random.hpp>
#include <boost/math/tools/rational.hpp>
#include <iostream>
#include <fstream>

int main()
{
   using namespace boost::math;
   using namespace boost::math::tools;

   boost::math::ntl::RR::SetPrecision(500);
   boost::math::ntl::RR::SetOutputPrecision(40);

   std::tr1::mt19937 rnd;
   std::tr1::variate_generator<
      std::tr1::mt19937, 
      std::tr1::uniform_int<> > gen(rnd, std::tr1::uniform_int<>(1, 12));

   for(unsigned i = 1; i < 12; ++i)
   {
      std::vector<int> coef;
      for(unsigned j = 0; j < i; ++j)
      {
         coef.push_back(gen());
      }
      std::cout << 
"   //\n"
"   // Polynomials of order " << i-1 << "\n"
"   //\n"
"   static const U n" << i << "c[" << i << "] = { ";
      for(unsigned j = 0; j < i; ++j)
      {
         if(j) 
            std::cout  << ", ";
         std::cout << coef[j];
      }
      std::cout << " };\n";
      std::cout <<
         "   static const boost::array<U, " << i << "> n" << i << "a = { ";
      for(unsigned j = 0; j < i; ++j)
      {
         if(j) 
            std::cout  << ", ";
         std::cout << coef[j];
      }
      std::cout << " };\n";

      boost::math::ntl::RR r1 = boost::math::tools::evaluate_polynomial(&coef[0], boost::math::ntl::RR(0.125), i);
      boost::math::ntl::RR r2 = boost::math::tools::evaluate_polynomial(&coef[0], boost::math::ntl::RR(0.25), i);
      boost::math::ntl::RR r3 = boost::math::tools::evaluate_polynomial(&coef[0], boost::math::ntl::RR(0.75), i);
      boost::math::ntl::RR r4 = boost::math::tools::evaluate_polynomial(&coef[0], boost::math::ntl::RR(1) - boost::math::ntl::RR(1) / 64, i);

      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_polynomial(n" << i << "c, static_cast<T>(0.125), " << i << "),\n"
         "      static_cast<T>(" << r1 << "L),\n"
         "      tolerance);\n";
      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_polynomial(n" << i << "c, static_cast<T>(0.25), " << i << "),\n"
         "      static_cast<T>(" << r2 << "L),\n"
         "      tolerance);\n";
      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_polynomial(n" << i << "c, static_cast<T>(0.75), " << i << "),\n"
         "      static_cast<T>(" << r3 << "L),\n"
         "      tolerance);\n";
      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_polynomial(n" << i << "c, static_cast<T>(1.0f - 1.0f/64.0f), " << i << "),\n"
         "      static_cast<T>(" << r4 << "L),\n"
         "      tolerance);\n\n";

      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_polynomial(n" << i << "c, static_cast<T>(0.125)),\n"
         "      static_cast<T>(" << r1 << "L),\n"
         "      tolerance);\n";
      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_polynomial(n" << i << "c, static_cast<T>(0.25)),\n"
         "      static_cast<T>(" << r2 << "L),\n"
         "      tolerance);\n";
      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_polynomial(n" << i << "c, static_cast<T>(0.75)),\n"
         "      static_cast<T>(" << r3 << "L),\n"
         "      tolerance);\n";
      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_polynomial(n" << i << "c, static_cast<T>(1.0f - 1.0f/64.0f)),\n"
         "      static_cast<T>(" << r4 << "L),\n"
         "      tolerance);\n\n";

      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_polynomial(n" << i << "a, static_cast<T>(0.125)),\n"
         "      static_cast<T>(" << r1 << "L),\n"
         "      tolerance);\n";
      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_polynomial(n" << i << "a, static_cast<T>(0.25)),\n"
         "      static_cast<T>(" << r2 << "L),\n"
         "      tolerance);\n";
      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_polynomial(n" << i << "a, static_cast<T>(0.75)),\n"
         "      static_cast<T>(" << r3 << "L),\n"
         "      tolerance);\n";
      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_polynomial(n" << i << "a, static_cast<T>(1.0f - 1.0f/64.0f)),\n"
         "      static_cast<T>(" << r4 << "L),\n"
         "      tolerance);\n\n";

      r1 = boost::math::tools::evaluate_even_polynomial(&coef[0], boost::math::ntl::RR(0.125), i);
      r2 = boost::math::tools::evaluate_even_polynomial(&coef[0], boost::math::ntl::RR(0.25), i);
      r3 = boost::math::tools::evaluate_even_polynomial(&coef[0], boost::math::ntl::RR(0.75), i);
      r4 = boost::math::tools::evaluate_even_polynomial(&coef[0], boost::math::ntl::RR(1) - boost::math::ntl::RR(1) / 64, i);

      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_even_polynomial(n" << i << "c, static_cast<T>(0.125), " << i << "),\n"
         "      static_cast<T>(" << r1 << "L),\n"
         "      tolerance);\n";
      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_even_polynomial(n" << i << "c, static_cast<T>(0.25), " << i << "),\n"
         "      static_cast<T>(" << r2 << "L),\n"
         "      tolerance);\n";
      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_even_polynomial(n" << i << "c, static_cast<T>(0.75), " << i << "),\n"
         "      static_cast<T>(" << r3 << "L),\n"
         "      tolerance);\n";
      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_even_polynomial(n" << i << "c, static_cast<T>(1.0f - 1.0f/64.0f), " << i << "),\n"
         "      static_cast<T>(" << r4 << "L),\n"
         "      tolerance);\n\n";

      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_even_polynomial(n" << i << "c, static_cast<T>(0.125)),\n"
         "      static_cast<T>(" << r1 << "L),\n"
         "      tolerance);\n";
      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_even_polynomial(n" << i << "c, static_cast<T>(0.25)),\n"
         "      static_cast<T>(" << r2 << "L),\n"
         "      tolerance);\n";
      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_even_polynomial(n" << i << "c, static_cast<T>(0.75)),\n"
         "      static_cast<T>(" << r3 << "L),\n"
         "      tolerance);\n";
      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_even_polynomial(n" << i << "c, static_cast<T>(1.0f - 1.0f/64.0f)),\n"
         "      static_cast<T>(" << r4 << "L),\n"
         "      tolerance);\n\n";

      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_even_polynomial(n" << i << "a, static_cast<T>(0.125)),\n"
         "      static_cast<T>(" << r1 << "L),\n"
         "      tolerance);\n";
      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_even_polynomial(n" << i << "a, static_cast<T>(0.25)),\n"
         "      static_cast<T>(" << r2 << "L),\n"
         "      tolerance);\n";
      std::cout <<
         "   BOOST_CHECK_CLOSE(\n"
         "      boost::math::tools::evaluate_even_polynomial(n" << i << "a, static_cast<T>(0.75)),\n"
         "      static_cast<T>(" << r3 << "L),\n"
         "      tolerance);\n";
      std::cout <<