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1 | // (C) Copyright John Maddock 2006. |
2 | // Use, modification and distribution are subject to the | |
3 | // Boost Software License, Version 1.0. (See accompanying file | |
4 | // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
5 | ||
20effc67 | 6 | #include "mp_t.hpp" |
7c673cae FG |
7 | #include <boost/math/special_functions/beta.hpp> |
8 | #include <boost/math/constants/constants.hpp> | |
9 | #include <boost/lexical_cast.hpp> | |
10 | #include <fstream> | |
11 | #include <boost/math/tools/test_data.hpp> | |
12 | #include <boost/random.hpp> | |
7c673cae FG |
13 | |
14 | using namespace boost::math::tools; | |
15 | ||
16 | // | |
f67539c2 | 17 | // Force truncation to float precision of input values: |
7c673cae FG |
18 | // we must ensure that the input values are exactly representable |
19 | // in whatever type we are testing, or the output values will all | |
20 | // be thrown off: | |
21 | // | |
22 | float external_f; | |
23 | float force_truncate(const float* f) | |
24 | { | |
25 | external_f = *f; | |
26 | return external_f; | |
27 | } | |
28 | ||
29 | float truncate_to_float(mp_t r) | |
30 | { | |
31 | float f = boost::math::tools::real_cast<float>(r); | |
32 | return force_truncate(&f); | |
33 | } | |
34 | ||
35 | boost::mt19937 rnd; | |
36 | boost::uniform_real<float> ur_a(1.0F, 5.0F); | |
37 | boost::variate_generator<boost::mt19937, boost::uniform_real<float> > gen(rnd, ur_a); | |
38 | boost::uniform_real<float> ur_a2(0.0F, 100.0F); | |
39 | boost::variate_generator<boost::mt19937, boost::uniform_real<float> > gen2(rnd, ur_a2); | |
40 | ||
41 | struct ibeta_inv_data_generator | |
42 | { | |
43 | boost::math::tuple<mp_t, mp_t, mp_t, mp_t, mp_t, mp_t, mp_t> operator() | |
44 | (mp_t bp, mp_t x_, mp_t p_) | |
45 | { | |
46 | float b = truncate_to_float(real_cast<float>(gen() * pow(mp_t(10), bp))); | |
47 | float x = truncate_to_float(real_cast<float>(x_)); | |
48 | float p = truncate_to_float(real_cast<float>(p_)); | |
49 | std::cout << b << " " << x << " " << p << std::flush; | |
50 | mp_t inv = boost::math::ibeta_inva(mp_t(b), mp_t(x), mp_t(p)); | |
51 | std::cout << " " << inv << std::flush; | |
52 | mp_t invc = boost::math::ibetac_inva(mp_t(b), mp_t(x), mp_t(p)); | |
53 | std::cout << " " << invc << std::endl; | |
54 | mp_t invb = boost::math::ibeta_invb(mp_t(b), mp_t(x), mp_t(p)); | |
55 | std::cout << " " << invb << std::flush; | |
56 | mp_t invbc = boost::math::ibetac_invb(mp_t(b), mp_t(x), mp_t(p)); | |
57 | std::cout << " " << invbc << std::endl; | |
58 | return boost::math::make_tuple(b, x, p, inv, invc, invb, invbc); | |
59 | } | |
60 | }; | |
61 | ||
62 | int main(int argc, char*argv []) | |
63 | { | |
64 | bool cont; | |
65 | std::string line; | |
66 | ||
67 | parameter_info<mp_t> arg1, arg2, arg3; | |
68 | test_data<mp_t> data; | |
69 | ||
70 | std::cout << "Welcome.\n" | |
71 | "This program will generate spot tests for the inverse incomplete beta function:\n" | |
72 | " ibeta_inva(a, p) and ibetac_inva(a, q)\n\n"; | |
73 | ||
74 | arg1 = make_periodic_param(mp_t(-5), mp_t(6), 11); | |
75 | arg2 = make_random_param(mp_t(0.0001), mp_t(1), 10); | |
76 | arg3 = make_random_param(mp_t(0.0001), mp_t(1), 10); | |
77 | ||
78 | arg1.type |= dummy_param; | |
79 | arg2.type |= dummy_param; | |
80 | arg3.type |= dummy_param; | |
81 | ||
82 | data.insert(ibeta_inv_data_generator(), arg1, arg2, arg3); | |
83 | ||
84 | line = "ibeta_inva_data.ipp"; | |
85 | std::ofstream ofs(line.c_str()); | |
86 | ofs << std::scientific << std::setprecision(40); | |
87 | write_code(ofs, data, "ibeta_inva_data"); | |
88 | ||
89 | return 0; | |
90 | } | |
91 |