1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
// (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> operator()(mp_t ap, mp_t bp, mp_t x_)
{
float a = truncate_to_float(real_cast<float>(gen() * pow(mp_t(10), ap)));
float b = truncate_to_float(real_cast<float>(gen() * pow(mp_t(10), bp)));
float x = truncate_to_float(real_cast<float>(x_));
std::cout << a << " " << b << " " << x << std::flush;
mp_t inv = boost::math::ibeta_inv(mp_t(a), mp_t(b), mp_t(x));
std::cout << " " << inv << std::flush;
mp_t invc = boost::math::ibetac_inv(mp_t(a), mp_t(b), mp_t(x));
std::cout << " " << invc << std::endl;
return boost::math::make_tuple(a, b, x, inv, invc);
}
};
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_inv(a, p) and ibetac_inv(a, q)\n\n";
arg1 = make_periodic_param(mp_t(-5), mp_t(6), 11);
arg2 = make_periodic_param(mp_t(-5), mp_t(6), 11);
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_inv_data.ipp";
std::ofstream ofs(line.c_str());
ofs << std::scientific << std::setprecision(40);
write_code(ofs, data, "ibeta_inv_data");
return 0;
}
|
