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///////////////////////////////////////////////////////////////////
// Copyright Christopher Kormanyos 2018 - 2024. //
// Distributed under 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 <cstdint>
#include <random>
#include <string>
#include <examples/example_uintwide_t.h>
#include <math/wide_integer/uintwide_t.h>
namespace local_random
{
template<typename LimbType,
typename AllocatorType = void>
auto generate() -> bool
{
using random_engine_type = std::mersenne_twister_engine<std::uint64_t,
static_cast<std::size_t>(UINT32_C( 64)),
static_cast<std::size_t>(UINT32_C(312)),
static_cast<std::size_t>(UINT32_C(156)),
static_cast<std::size_t>(UINT32_C( 31)),
UINT64_C(0xB5026F5AA96619E9),
static_cast<std::size_t>(UINT32_C( 29)),
UINT64_C(0x5555555555555555),
static_cast<std::size_t>(UINT32_C( 17)),
UINT64_C(0x71D67FFFEDA60000),
static_cast<std::size_t>(UINT32_C( 37)),
UINT64_C(0xFFF7EEE000000000),
static_cast<std::size_t>(UINT32_C( 43)),
UINT64_C(6364136223846793005)>;
#if defined(WIDE_INTEGER_NAMESPACE)
using wide_integer_type = WIDE_INTEGER_NAMESPACE::math::wide_integer::uintwide_t<static_cast<WIDE_INTEGER_NAMESPACE::math::wide_integer::size_t>(UINT32_C(256)), std::uint32_t, AllocatorType>;
using distribution_type = WIDE_INTEGER_NAMESPACE::math::wide_integer::uniform_int_distribution<wide_integer_type::my_width2, typename wide_integer_type::limb_type>;
#else
using wide_integer_type = ::math::wide_integer::uintwide_t<static_cast<math::wide_integer::size_t>(UINT32_C(256)), std::uint32_t, AllocatorType>;
using distribution_type = ::math::wide_integer::uniform_int_distribution<wide_integer_type::my_width2, typename wide_integer_type::limb_type>;
#endif
// Generate a random number with wide_integer_type having limbs of type LimbType.
// Purosely use the default seed.
random_engine_type generator; // NOLINT(cert-msc32-c,cert-msc51-cpp)
distribution_type distribution { };
const wide_integer_type n = distribution(generator);
const auto result_is_ok =
(n == wide_integer_type("0xF258D22D4DB91392B5EE8CB6ABE457F8401F7AC78BC80F1CC96D191CF6F6AEA6"));
return result_is_ok;
}
} // namespace local_random
#if defined(WIDE_INTEGER_NAMESPACE)
auto WIDE_INTEGER_NAMESPACE::math::wide_integer::example007_random_generator() -> bool
#else
auto ::math::wide_integer::example007_random_generator() -> bool
#endif
{
const bool result_08_is_ok = local_random::generate<std::uint8_t> ();
const bool result_16_is_ok = local_random::generate<std::uint16_t>();
const bool result_32_is_ok = local_random::generate<std::uint32_t>();
const auto result_is_ok = ( result_08_is_ok
&& result_16_is_ok
&& result_32_is_ok);
return result_is_ok;
}
// Enable this if you would like to activate this main() as a standalone example.
#if defined(WIDE_INTEGER_STANDALONE_EXAMPLE007_RANDOM_GENERATOR)
#include <iomanip>
#include <iostream>
auto main() -> int
{
#if defined(WIDE_INTEGER_NAMESPACE)
const auto result_is_ok = WIDE_INTEGER_NAMESPACE::math::wide_integer::example007_random_generator();
#else
const auto result_is_ok = ::math::wide_integer::example007_random_generator();
#endif
std::cout << "result_is_ok: " << std::boolalpha << result_is_ok << std::endl;
return (result_is_ok ? 0 : -1);
}
#endif
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