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
|
// (C) Copyright John Maddock 2007.
// 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/expint.hpp>
#include <boost/math/constants/constants.hpp>
#include <fstream>
#include <boost/math/tools/test_data.hpp>
#include "mp_t.hpp"
using namespace boost::math::tools;
struct expint_data_generator
{
mp_t operator()(mp_t a, mp_t b)
{
unsigned n = boost::math::tools::real_cast<unsigned>(a);
std::cout << n << " " << b << " ";
mp_t result = boost::math::expint(n, b);
std::cout << result << std::endl;
return result;
}
};
int main()
{
boost::math::expint(1, 0.06227754056453704833984375);
std::cout << boost::math::expint(1, mp_t(0.5)) << std::endl;
parameter_info<mp_t> arg1, arg2;
test_data<mp_t> data;
std::cout << "Welcome.\n"
"This program will generate spot tests for the expint function:\n"
" expint(a, b)\n\n";
bool cont;
std::string line;
do{
get_user_parameter_info(arg1, "a");
get_user_parameter_info(arg2, "b");
data.insert(expint_data_generator(), arg1, arg2);
std::cout << "Any more data [y/n]?";
std::getline(std::cin, line);
boost::algorithm::trim(line);
cont = (line == "y");
}while(cont);
std::cout << "Enter name of test data file [default=expint_data.ipp]";
std::getline(std::cin, line);
boost::algorithm::trim(line);
if(line == "")
line = "expint_data.ipp";
std::ofstream ofs(line.c_str());
ofs << std::scientific << std::setprecision(40);
write_code(ofs, data, "expint_data");
return 0;
}
|
