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
|
// 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)
//[special_data_example
#include <boost/multiprecision/cpp_dec_float.hpp>
#include <boost/math/tools/test_data.hpp>
#include <boost/test/included/prg_exec_monitor.hpp>
#include <fstream>
using namespace boost::math::tools;
using namespace boost::math;
using namespace std;
using namespace boost::multiprecision;
template <class T>
T my_special(T a, T b)
{
// Implementation of my_special here...
return a + b;
}
int cpp_main(int argc, char*argv [])
{
//
// We'll use so many digits of precision that any
// calculation errors will still leave us with
// 40-50 good digits. We'll only run this program
// once so it doesn't matter too much how long this takes!
//
typedef number<cpp_dec_float<500> > bignum;
parameter_info<bignum> arg1, arg2;
test_data<bignum> data;
bool cont;
std::string line;
if(argc < 1)
return 1;
do{
//
// User interface which prompts for
// range of input parameters:
//
if(0 == get_user_parameter_info(arg1, "a"))
return 1;
if(0 == get_user_parameter_info(arg2, "b"))
return 1;
//
// Get a pointer to the function and call
// test_data::insert to actually generate
// the values.
//
bignum (*fp)(bignum, bignum) = &my_special;
data.insert(fp, arg2, arg1);
std::cout << "Any more data [y/n]?";
std::getline(std::cin, line);
boost::algorithm::trim(line);
cont = (line == "y");
}while(cont);
//
// Just need to write the results to a file:
//
std::cout << "Enter name of test data file [default=my_special.ipp]";
std::getline(std::cin, line);
boost::algorithm::trim(line);
if(line == "")
line = "my_special.ipp";
std::ofstream ofs(line.c_str());
line.erase(line.find('.'));
ofs << std::scientific << std::setprecision(50);
write_code(ofs, data, line.c_str());
return 0;
}
//]
|
