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- // Copyright John Maddock 2013.
- // 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)
- //[special_data_example
- #include <boost/multiprecision/mpfr.hpp>
- #include <boost/math/tools/test_data.hpp>
- #include <boost/test/included/prg_exec_monitor.hpp>
- #include <boost/math/tools/tuple.hpp>
- #include <fstream>
- using namespace boost::math::tools;
- using namespace boost::math;
- using namespace std;
- using namespace boost::multiprecision;
- typedef number<mpfr_float_backend<1000> > mp_type;
- boost::math::tuple<mp_type, mp_type, mp_type> generate(mp_type a)
- {
- mp_type tg, lg;
- mpfr_gamma(tg.backend().data(), a.backend().data(), GMP_RNDN);
- mpfr_lngamma(lg.backend().data(), a.backend().data(), GMP_RNDN);
- return boost::math::make_tuple(a, tg, lg);
- }
- int cpp_main(int argc, char*argv [])
- {
- parameter_info<mp_type> arg1, arg2;
- test_data<mp_type> data;
- bool cont;
- std::string line;
- if(argc < 1)
- return 1;
- do{
- //
- // User interface which prompts for
- // range of input parameters:
- //
- if(0 == get_user_parameter_info(arg1, "a"))
- return 1;
- arg1.type |= dummy_param;
- data.insert(&generate, arg1);
- std::cout << "Any more data [y/n]?";
- std::getline(std::cin, line);
- boost::algorithm::trim(line);
- cont = (line == "y");
- }while(cont);
- //
- // Just need to write the results to a file:
- //
- std::cout << "Enter name of test data file [default=gamma.ipp]";
- std::getline(std::cin, line);
- boost::algorithm::trim(line);
- if(line == "")
- line = "gamma.ipp";
- std::ofstream ofs(line.c_str());
- line.erase(line.find('.'));
- ofs << std::scientific << std::setprecision(500);
- write_code(ofs, data, line.c_str());
- return 0;
- }
- //]
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