Initial commit

libs/math/tools/expint_data.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/special_functions/expint.hpp>
+#include <boost/math/constants/constants.hpp>
+#include <fstream>
+#include <boost/math/tools/test_data.hpp>
+#include "mp_t.hpp"
+
+using namespace boost::math::tools;
+
+struct expint_data_generator
+{
+   mp_t operator()(mp_t a, mp_t b)
+   {
+      unsigned n = boost::math::tools::real_cast<unsigned>(a);
+      std::cout << n << "  " << b << "  ";
+      mp_t result = boost::math::expint(n, b);
+      std::cout << result << std::endl;
+      return result;
+   }
+};
+
+
+int main()
+{
+   boost::math::expint(1, 0.06227754056453704833984375);
+   std::cout << boost::math::expint(1, mp_t(0.5)) << std::endl;
+
+   parameter_info<mp_t> arg1, arg2;
+   test_data<mp_t> data;
+
+   std::cout << "Welcome.\n"
+      "This program will generate spot tests for the expint function:\n"
+      "  expint(a, b)\n\n";
+
+   bool cont;
+   std::string line;
+
+   do{
+      get_user_parameter_info(arg1, "a");
+      get_user_parameter_info(arg2, "b");
+      data.insert(expint_data_generator(), 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=expint_data.ipp]";
+   std::getline(std::cin, line);
+   boost::algorithm::trim(line);
+   if(line == "")
+      line = "expint_data.ipp";
+   std::ofstream ofs(line.c_str());
+   ofs << std::scientific << std::setprecision(40);
+   write_code(ofs, data, "expint_data");
+   
+   return 0;
+}
+