102 lines
2.7 KiB
C++
102 lines
2.7 KiB
C++
// (C) Copyright John Maddock 2007.
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// Use, modification and distribution are subject to the
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// Boost Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/math/special_functions/legendre.hpp>
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#include <boost/math/special_functions/gamma.hpp>
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#include <fstream>
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#include <boost/math/tools/test_data.hpp>
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#include <boost/random.hpp>
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#include "mp_t.hpp"
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using namespace boost::math::tools;
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using namespace boost::math;
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using namespace std;
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template<class T>
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boost::math::tuple<T, T, T, T> legendre_p_data(T n, T x)
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{
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n = floor(n);
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T r1 = legendre_p(boost::math::tools::real_cast<int>(n), x);
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T r2 = legendre_q(boost::math::tools::real_cast<int>(n), x);
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return boost::math::make_tuple(n, x, r1, r2);
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}
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template<class T>
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boost::math::tuple<T, T, T, T> assoc_legendre_p_data(T n, T x)
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{
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static boost::mt19937 r;
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int l = real_cast<int>(floor(n));
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boost::uniform_int<> ui((std::max)(-l, -40), (std::min)(l, 40));
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int m = ui(r);
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T r1 = legendre_p(l, m, x);
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return boost::math::make_tuple(n, m, x, r1);
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}
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int main(int argc, char*argv [])
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{
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using namespace boost::math::tools;
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parameter_info<mp_t> arg1, arg2;
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test_data<mp_t> data;
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bool cont;
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std::string line;
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if(argc < 1)
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return 1;
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if(strcmp(argv[1], "--legendre2") == 0)
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{
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do{
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if(0 == get_user_parameter_info(arg1, "l"))
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return 1;
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if(0 == get_user_parameter_info(arg2, "x"))
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return 1;
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arg1.type |= dummy_param;
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arg2.type |= dummy_param;
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data.insert(&legendre_p_data<mp_t>, arg1, arg2);
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std::cout << "Any more data [y/n]?";
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std::getline(std::cin, line);
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boost::algorithm::trim(line);
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cont = (line == "y");
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}while(cont);
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}
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else if(strcmp(argv[1], "--legendre3") == 0)
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{
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do{
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if(0 == get_user_parameter_info(arg1, "l"))
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return 1;
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if(0 == get_user_parameter_info(arg2, "x"))
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return 1;
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arg1.type |= dummy_param;
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arg2.type |= dummy_param;
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data.insert(&assoc_legendre_p_data<mp_t>, arg1, arg2);
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std::cout << "Any more data [y/n]?";
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std::getline(std::cin, line);
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boost::algorithm::trim(line);
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cont = (line == "y");
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}while(cont);
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}
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std::cout << "Enter name of test data file [default=legendre_p.ipp]";
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std::getline(std::cin, line);
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boost::algorithm::trim(line);
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if(line == "")
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line = "legendre_p.ipp";
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std::ofstream ofs(line.c_str());
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ofs << std::scientific << std::setprecision(40);
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line.erase(line.find('.'));
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write_code(ofs, data, line.c_str());
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return 0;
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}
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