123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869 |
- // (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 <boost/math/constants/constants.hpp>
- #include <boost/lexical_cast.hpp>
- #include <fstream>
- #include <boost/math/tools/test_data.hpp>
- #include "mp_t.hpp"
- using namespace boost::math::tools;
- //
- // Force trunctation to float precision of input values:
- // we must ensure that the input values are exactly representable
- // in whatever type we are testing, or the output values will all
- // be thrown off:
- //
- float external_f;
- float force_truncate(const float* f)
- {
- external_f = *f;
- return external_f;
- }
- float truncate_to_float(mp_t r)
- {
- float f = boost::math::tools::real_cast<float>(r);
- return force_truncate(&f);
- }
- struct gamma_inverse_generator_a
- {
- boost::math::tuple<mp_t, mp_t> operator()(const mp_t x, const mp_t p)
- {
- mp_t x1 = boost::math::gamma_p_inva(x, p);
- mp_t x2 = boost::math::gamma_q_inva(x, p);
- std::cout << "Inverse for " << x << " " << p << std::endl;
- return boost::math::make_tuple(x1, x2);
- }
- };
- int main(int argc, char*argv [])
- {
- bool cont;
- std::string line;
- parameter_info<mp_t> arg1, arg2;
- test_data<mp_t> data;
- std::cout << "Welcome.\n"
- "This program will generate spot tests for the inverse incomplete gamma function:\n"
- " gamma_p_inva(a, p) and gamma_q_inva(a, q)\n\n";
- arg1 = make_power_param<mp_t>(mp_t(0), -4, 24);
- arg2 = make_random_param<mp_t>(mp_t(0), mp_t(1), 15);
- data.insert(gamma_inverse_generator_a(), arg1, arg2);
-
- line = "igamma_inva_data.ipp";
- std::ofstream ofs(line.c_str());
- ofs << std::scientific << std::setprecision(40);
- write_code(ofs, data, "igamma_inva_data");
-
- return 0;
- }
|