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
|
///////////////////////////////////////////////////////////////
// Copyright 2012 John Maddock. Distributed under the Boost
// Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt
//
// Compare arithmetic results using fixed_int to GMP results.
//
#ifdef _MSC_VER
# define _SCL_SECURE_NO_WARNINGS
#endif
//[mixed_eg
#include <boost/multiprecision/cpp_int.hpp>
int main()
{
using namespace boost::multiprecision;
std::uint64_t i = (std::numeric_limits<std::uint64_t>::max)();
std::uint64_t j = 1;
uint128_t ui128;
uint256_t ui256;
//
// Start by performing arithmetic on 64-bit integers to yield 128-bit results:
//
std::cout << std::hex << std::showbase << i << std::endl;
std::cout << std::hex << std::showbase << add(ui128, i, j) << std::endl;
std::cout << std::hex << std::showbase << multiply(ui128, i, i) << std::endl;
//
// The try squaring a 128-bit integer to yield a 256-bit result:
//
ui128 = (std::numeric_limits<uint128_t>::max)();
std::cout << std::hex << std::showbase << multiply(ui256, ui128, ui128) << std::endl;
return 0;
}
//]
/*
Program output:
//[mixed_output
0xffffffffffffffff
0x10000000000000000
0xFFFFFFFFFFFFFFFE0000000000000001
0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFE00000000000000000000000000000001
//]
*/
|
