example002_shl_shr.cpp

///////////////////////////////////////////////////////////////////
//  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 <examples/example_uintwide_t.h>
#include <math/wide_integer/uintwide_t.h>

#if defined(WIDE_INTEGER_NAMESPACE)
auto WIDE_INTEGER_NAMESPACE::math::wide_integer::example002_shl_shr() -> bool
#else
auto ::math::wide_integer::example002_shl_shr() -> bool
#endif
{
  #if defined(WIDE_INTEGER_NAMESPACE)
  using WIDE_INTEGER_NAMESPACE::math::wide_integer::uint256_t;
  #else
  using ::math::wide_integer::uint256_t;
  #endif

  constexpr uint256_t a("0xF4DF741DE58BCB2F37F18372026EF9CBCFC456CB80AF54D53BDEED78410065DE");

  constexpr uint256_t c = (a << 67); // NOLINT(cppcoreguidelines-avoid-magic-numbers,readability-magic-numbers)
  constexpr uint256_t d = (a >> 79); // NOLINT(cppcoreguidelines-avoid-magic-numbers,readability-magic-numbers)

  const auto result_is_ok = (   (c == "0xBF8C1B901377CE5E7E22B65C057AA6A9DEF76BC208032EF00000000000000000")
                             && (d == "0x1E9BEE83BCB17965E6FE306E404DDF3979F88AD97015E"));

  static_assert(result_is_ok, "Error: example002_shl_shr not OK!");

  return result_is_ok;
}

// Enable this if you would like to activate this main() as a standalone example.
#if defined(WIDE_INTEGER_STANDALONE_EXAMPLE002_SHL_SHR)

#include <iomanip>
#include <iostream>

auto main() -> int
{
  #if defined(WIDE_INTEGER_NAMESPACE)
  const auto result_is_ok = WIDE_INTEGER_NAMESPACE::math::wide_integer::example002_shl_shr();
  #else
  const auto result_is_ok = ::math::wide_integer::example002_shl_shr();
  #endif

  std::cout << "result_is_ok: " << std::boolalpha << result_is_ok << std::endl;

  return (result_is_ok ? 0 : -1);
}

#endif