Initial commit

libs/math/tools/legendre_data.cpp

@@ -0,0 +1,101 @@
+//  (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/special_functions/legendre.hpp>
+#include <boost/math/special_functions/gamma.hpp>
+#include <fstream>
+#include <boost/math/tools/test_data.hpp>
+#include <boost/random.hpp>
+#include "mp_t.hpp"
+
+using namespace boost::math::tools;
+using namespace boost::math;
+using namespace std;
+
+
+template<class T>
+boost::math::tuple<T, T, T, T> legendre_p_data(T n, T x)
+{
+   n = floor(n);
+   T r1 = legendre_p(boost::math::tools::real_cast<int>(n), x);
+   T r2 = legendre_q(boost::math::tools::real_cast<int>(n), x);
+   return boost::math::make_tuple(n, x, r1, r2);
+}
+   
+template<class T>
+boost::math::tuple<T, T, T, T> assoc_legendre_p_data(T n, T x)
+{
+   static boost::mt19937 r;
+   int l = real_cast<int>(floor(n));
+   boost::uniform_int<> ui((std::max)(-l, -40), (std::min)(l, 40));
+   int m = ui(r);
+   T r1 = legendre_p(l, m, x);
+   return boost::math::make_tuple(n, m, x, r1);
+}
+
+int main(int argc, char*argv [])
+{
+   using namespace boost::math::tools;
+
+   parameter_info<mp_t> arg1, arg2;
+   test_data<mp_t> data;
+
+   bool cont;
+   std::string line;
+
+   if(argc < 1)
+      return 1;
+
+   if(strcmp(argv[1], "--legendre2") == 0)
+   {
+      do{
+         if(0 == get_user_parameter_info(arg1, "l"))
+            return 1;
+         if(0 == get_user_parameter_info(arg2, "x"))
+            return 1;
+         arg1.type |= dummy_param;
+         arg2.type |= dummy_param;
+
+         data.insert(&legendre_p_data<mp_t>, arg1, arg2);
+
+         std::cout << "Any more data [y/n]?";
+         std::getline(std::cin, line);
+         boost::algorithm::trim(line);
+         cont = (line == "y");
+      }while(cont);
+   }
+   else if(strcmp(argv[1], "--legendre3") == 0)
+   {
+      do{
+         if(0 == get_user_parameter_info(arg1, "l"))
+            return 1;
+         if(0 == get_user_parameter_info(arg2, "x"))
+            return 1;
+         arg1.type |= dummy_param;
+         arg2.type |= dummy_param;
+
+         data.insert(&assoc_legendre_p_data<mp_t>, arg1, arg2);
+
+         std::cout << "Any more data [y/n]?";
+         std::getline(std::cin, line);
+         boost::algorithm::trim(line);
+         cont = (line == "y");
+      }while(cont);
+   }
+
+
+   std::cout << "Enter name of test data file [default=legendre_p.ipp]";
+   std::getline(std::cin, line);
+   boost::algorithm::trim(line);
+   if(line == "")
+      line = "legendre_p.ipp";
+   std::ofstream ofs(line.c_str());
+   ofs << std::scientific << std::setprecision(40);
+   line.erase(line.find('.'));
+   write_code(ofs, data, line.c_str());
+
+   return 0;
+}
+