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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/gamma.hpp> |
8 | #include <fstream> | |
9 | #include <boost/math/tools/test_data.hpp> | |
7c673cae FG |
10 | |
11 | using namespace boost::math::tools; | |
12 | using namespace std; | |
13 | ||
14 | boost::math::tuple<mp_t, mp_t> | |
15 | tgamma_ratio(const mp_t& a, const mp_t& delta) | |
16 | { | |
17 | if(delta > a) | |
18 | throw std::domain_error(""); | |
19 | mp_t tg = boost::math::tgamma(a); | |
20 | mp_t r1 = tg / boost::math::tgamma(a + delta); | |
21 | mp_t r2 = tg / boost::math::tgamma(a - delta); | |
22 | if((r1 > (std::numeric_limits<float>::max)()) || (r2 > (std::numeric_limits<float>::max)())) | |
23 | throw std::domain_error(""); | |
24 | ||
25 | return boost::math::make_tuple(r1, r2); | |
26 | } | |
27 | ||
28 | mp_t tgamma_ratio2(const mp_t& a, const mp_t& b) | |
29 | { | |
30 | return boost::math::tgamma(a) / boost::math::tgamma(b); | |
31 | } | |
32 | ||
33 | ||
34 | int main(int argc, char*argv []) | |
35 | { | |
36 | parameter_info<mp_t> arg1, arg2; | |
37 | test_data<mp_t> data; | |
38 | ||
39 | bool cont; | |
40 | std::string line; | |
41 | ||
42 | if((argc >= 2) && (strcmp(argv[1], "--ratio") == 0)) | |
43 | { | |
44 | std::cout << "Welcome.\n" | |
45 | "This program will generate spot tests for the function tgamma_ratio(a, b)\n\n"; | |
46 | ||
47 | do{ | |
48 | if(0 == get_user_parameter_info(arg1, "a")) | |
49 | return 1; | |
50 | if(0 == get_user_parameter_info(arg2, "b")) | |
51 | return 1; | |
52 | data.insert(&tgamma_ratio2, arg1, arg2); | |
53 | ||
54 | std::cout << "Any more data [y/n]?"; | |
55 | std::getline(std::cin, line); | |
56 | boost::algorithm::trim(line); | |
57 | cont = (line == "y"); | |
58 | }while(cont); | |
59 | } | |
60 | else | |
61 | { | |
62 | std::cout << "Welcome.\n" | |
63 | "This program will generate spot tests for the function tgamma_delta_ratio(a, delta)\n\n"; | |
64 | ||
65 | do{ | |
66 | if(0 == get_user_parameter_info(arg1, "a")) | |
67 | return 1; | |
68 | if(0 == get_user_parameter_info(arg2, "delta")) | |
69 | return 1; | |
70 | data.insert(&tgamma_ratio, arg1, arg2); | |
71 | ||
72 | std::cout << "Any more data [y/n]?"; | |
73 | std::getline(std::cin, line); | |
74 | boost::algorithm::trim(line); | |
75 | cont = (line == "y"); | |
76 | }while(cont); | |
77 | } | |
78 | ||
79 | std::cout << "Enter name of test data file [default=tgamma_ratio_data.ipp]"; | |
80 | std::getline(std::cin, line); | |
81 | boost::algorithm::trim(line); | |
82 | if(line == "") | |
83 | line = "tgamma_ratio_data.ipp"; | |
84 | std::ofstream ofs(line.c_str()); | |
85 | ofs << std::scientific << std::setprecision(40); | |
86 | write_code(ofs, data, "tgamma_ratio_data"); | |
87 | ||
88 | return 0; | |
89 | } | |
90 | ||
91 |