92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
// (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;
|
|
}
|
|
|
|
|