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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;
- }
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