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c3611d0c6b
Updated incomplete beta with BGRAT routine from Didonato and Morris. Added even and odd polynomials. Lots of small tweeks. [SVN r2972]
92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
// (C) Copyright John Maddock 2006.
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// Use, modification and distribution are subject to the
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// Boost Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/math/tools/ntl.hpp>
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#include <boost/math/special_functions/gamma.hpp>
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#include <boost/math/tools/test.hpp>
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#include <fstream>
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#include <boost/math/tools/test_data.hpp>
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#include "ntl_rr_lanczos.hpp"
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using namespace boost::math::tools;
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using namespace std;
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std::tr1::tuple<NTL::RR, NTL::RR>
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tgamma_ratio(const NTL::RR& a, const NTL::RR& delta)
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{
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NTL::RR tg = boost::math::tgamma(a);
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return std::tr1::make_tuple(tg / boost::math::tgamma(a + delta), tg / boost::math::tgamma(a - delta));
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}
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NTL::RR tgamma_ratio2(const NTL::RR& a, const NTL::RR& b)
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{
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return boost::math::tgamma(a) / boost::math::tgamma(b);
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}
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int main(int argc, char* argv[])
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{
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NTL::RR::SetPrecision(1000);
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NTL::RR::SetOutputPrecision(40);
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parameter_info<NTL::RR> arg1, arg2;
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test_data<NTL::RR> data;
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bool cont;
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std::string line;
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if((argc >= 2) && (strcmp(argv[1], "--ratio") == 0))
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{
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std::cout << "Welcome.\n"
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"This program will generate spot tests for the function tgamma_ratio(a, b)\n\n";
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do{
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if(0 == get_user_parameter_info(arg1, "a"))
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return 1;
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if(0 == get_user_parameter_info(arg2, "b"))
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return 1;
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data.insert(&tgamma_ratio2, arg1, arg2);
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std::cout << "Any more data [y/n]?";
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std::getline(std::cin, line);
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boost::algorithm::trim(line);
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cont = (line == "y");
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}while(cont);
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}
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else
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{
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std::cout << "Welcome.\n"
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"This program will generate spot tests for the function tgamma_delta_ratio(a, delta)\n\n";
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do{
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if(0 == get_user_parameter_info(arg1, "a"))
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return 1;
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if(0 == get_user_parameter_info(arg2, "delta"))
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return 1;
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data.insert(&tgamma_ratio, arg1, arg2);
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std::cout << "Any more data [y/n]?";
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std::getline(std::cin, line);
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boost::algorithm::trim(line);
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cont = (line == "y");
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}while(cont);
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}
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std::cout << "Enter name of test data file [default=tgamma_ratio_data.ipp]";
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std::getline(std::cin, line);
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boost::algorithm::trim(line);
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if(line == "")
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line = "tgamma_ratio_data.ipp";
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std::ofstream ofs(line.c_str());
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ofs << std::scientific;
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write_code(ofs, data, "tgamma_ratio_data");
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return 0;
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}
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