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- // (C) Copyright John Maddock 2006.
- // 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/gamma.hpp>
- #include <fstream>
- #include <boost/math/tools/test_data.hpp>
- #include "mp_t.hpp"
- using namespace boost::math::tools;
- using namespace std;
- boost::math::tuple<mp_t, mp_t>
- tgamma_ratio(const mp_t& a, const mp_t& delta)
- {
- if(delta > a)
- throw std::domain_error("");
- mp_t tg = boost::math::tgamma(a);
- mp_t r1 = tg / boost::math::tgamma(a + delta);
- mp_t r2 = tg / boost::math::tgamma(a - delta);
- if((r1 > (std::numeric_limits<float>::max)()) || (r2 > (std::numeric_limits<float>::max)()))
- throw std::domain_error("");
- return boost::math::make_tuple(r1, r2);
- }
- mp_t tgamma_ratio2(const mp_t& a, const mp_t& b)
- {
- return boost::math::tgamma(a) / boost::math::tgamma(b);
- }
- int main(int argc, char*argv [])
- {
- parameter_info<mp_t> arg1, arg2;
- test_data<mp_t> data;
- bool cont;
- std::string line;
- if((argc >= 2) && (strcmp(argv[1], "--ratio") == 0))
- {
- std::cout << "Welcome.\n"
- "This program will generate spot tests for the function tgamma_ratio(a, b)\n\n";
- do{
- if(0 == get_user_parameter_info(arg1, "a"))
- return 1;
- if(0 == get_user_parameter_info(arg2, "b"))
- return 1;
- data.insert(&tgamma_ratio2, arg1, arg2);
- std::cout << "Any more data [y/n]?";
- std::getline(std::cin, line);
- boost::algorithm::trim(line);
- cont = (line == "y");
- }while(cont);
- }
- else
- {
- std::cout << "Welcome.\n"
- "This program will generate spot tests for the function tgamma_delta_ratio(a, delta)\n\n";
- do{
- if(0 == get_user_parameter_info(arg1, "a"))
- return 1;
- if(0 == get_user_parameter_info(arg2, "delta"))
- return 1;
- data.insert(&tgamma_ratio, 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=tgamma_ratio_data.ipp]";
- std::getline(std::cin, line);
- boost::algorithm::trim(line);
- if(line == "")
- line = "tgamma_ratio_data.ipp";
- std::ofstream ofs(line.c_str());
- ofs << std::scientific << std::setprecision(40);
- write_code(ofs, data, "tgamma_ratio_data");
-
- return 0;
- }
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