| // (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/beta.hpp> |
| #include <boost/math/constants/constants.hpp> |
| #include <boost/lexical_cast.hpp> |
| #include <fstream> |
| #include <boost/math/tools/test_data.hpp> |
| #include <boost/random.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); |
| } |
| |
| boost::mt19937 rnd; |
| boost::uniform_real<float> ur_a(1.0F, 5.0F); |
| boost::variate_generator<boost::mt19937, boost::uniform_real<float> > gen(rnd, ur_a); |
| boost::uniform_real<float> ur_a2(0.0F, 100.0F); |
| boost::variate_generator<boost::mt19937, boost::uniform_real<float> > gen2(rnd, ur_a2); |
| |
| struct ibeta_inv_data_generator |
| { |
| boost::math::tuple<mp_t, mp_t, mp_t, mp_t, mp_t, mp_t, mp_t> operator() |
| (mp_t bp, mp_t x_, mp_t p_) |
| { |
| float b = truncate_to_float(real_cast<float>(gen() * pow(mp_t(10), bp))); |
| float x = truncate_to_float(real_cast<float>(x_)); |
| float p = truncate_to_float(real_cast<float>(p_)); |
| std::cout << b << " " << x << " " << p << std::flush; |
| mp_t inv = boost::math::ibeta_inva(mp_t(b), mp_t(x), mp_t(p)); |
| std::cout << " " << inv << std::flush; |
| mp_t invc = boost::math::ibetac_inva(mp_t(b), mp_t(x), mp_t(p)); |
| std::cout << " " << invc << std::endl; |
| mp_t invb = boost::math::ibeta_invb(mp_t(b), mp_t(x), mp_t(p)); |
| std::cout << " " << invb << std::flush; |
| mp_t invbc = boost::math::ibetac_invb(mp_t(b), mp_t(x), mp_t(p)); |
| std::cout << " " << invbc << std::endl; |
| return boost::math::make_tuple(b, x, p, inv, invc, invb, invbc); |
| } |
| }; |
| |
| int main(int argc, char*argv []) |
| { |
| bool cont; |
| std::string line; |
| |
| parameter_info<mp_t> arg1, arg2, arg3; |
| test_data<mp_t> data; |
| |
| std::cout << "Welcome.\n" |
| "This program will generate spot tests for the inverse incomplete beta function:\n" |
| " ibeta_inva(a, p) and ibetac_inva(a, q)\n\n"; |
| |
| arg1 = make_periodic_param(mp_t(-5), mp_t(6), 11); |
| arg2 = make_random_param(mp_t(0.0001), mp_t(1), 10); |
| arg3 = make_random_param(mp_t(0.0001), mp_t(1), 10); |
| |
| arg1.type |= dummy_param; |
| arg2.type |= dummy_param; |
| arg3.type |= dummy_param; |
| |
| data.insert(ibeta_inv_data_generator(), arg1, arg2, arg3); |
| |
| line = "ibeta_inva_data.ipp"; |
| std::ofstream ofs(line.c_str()); |
| ofs << std::scientific << std::setprecision(40); |
| write_code(ofs, data, "ibeta_inva_data"); |
| |
| return 0; |
| } |
| |