text: //  buffer_test.cpp  -------------------------------------------------------------------//
  
  //  Copyright Beman Dawes 2014
  
  //  Distributed under the Boost Software License, Version 1.0.
  //  See http://www.boost.org/LICENSE_1_0.txt
  
  //  See library home page at http://www.boost.org/libs/endian
  
  //--------------------------------------------------------------------------------------//
  
  #include <boost/endian/detail/disable_warnings.hpp>
  
  #include <boost/endian/buffers.hpp>
  #include <boost/core/lightweight_test.hpp>
  #include <boost/cstdint.hpp>
  #include <iostream>
  #include <sstream>
  #include <limits>
  
  using namespace boost::endian;
  using std::cout;
  using std::endl;
  
  namespace
  {
  
    //  check_size  ------------------------------------------------------------//
  
    void check_size()
    {
  
      BOOST_TEST_EQ(sizeof(big_int8_buf_t), 1u);
      BOOST_TEST_EQ(sizeof(big_int16_buf_t), 2u);
      BOOST_TEST_EQ(sizeof(big_int24_buf_t), 3u);
      BOOST_TEST_EQ(sizeof(big_int32_buf_t), 4u);
      BOOST_TEST_EQ(sizeof(big_int40_buf_t), 5u);
      BOOST_TEST_EQ(sizeof(big_int48_buf_t), 6u);
      BOOST_TEST_EQ(sizeof(big_int56_buf_t), 7u);
      BOOST_TEST_EQ(sizeof(big_int64_buf_t), 8u);
  
      BOOST_TEST_EQ(sizeof(big_uint8_buf_t), 1u);
      BOOST_TEST_EQ(sizeof(big_uint16_buf_t), 2u);
      BOOST_TEST_EQ(sizeof(big_uint24_buf_t), 3u);
      BOOST_TEST_EQ(sizeof(big_uint32_buf_t), 4u);
      BOOST_TEST_EQ(sizeof(big_uint40_buf_t), 5u);
      BOOST_TEST_EQ(sizeof(big_uint48_buf_t), 6u);
      BOOST_TEST_EQ(sizeof(big_uint56_buf_t), 7u);
      BOOST_TEST_EQ(sizeof(big_uint64_buf_t), 8u);
  
      BOOST_TEST_EQ(sizeof(big_float32_buf_t), 4u);
      BOOST_TEST_EQ(sizeof(big_float64_buf_t), 8u);
  
      BOOST_TEST_EQ(sizeof(little_int8_buf_t), 1u);
      BOOST_TEST_EQ(sizeof(little_int16_buf_t), 2u);
      BOOST_TEST_EQ(sizeof(little_int24_buf_t), 3u);
      BOOST_TEST_EQ(sizeof(little_int32_buf_t), 4u);
      BOOST_TEST_EQ(sizeof(little_int40_buf_t), 5u);
      BOOST_TEST_EQ(sizeof(little_int48_buf_t), 6u);
      BOOST_TEST_EQ(sizeof(little_int56_buf_t), 7u);
      BOOST_TEST_EQ(sizeof(little_int64_buf_t), 8u);
  
      BOOST_TEST_EQ(sizeof(little_uint8_buf_t), 1u);
      BOOST_TEST_EQ(sizeof(little_uint16_buf_t), 2u);
      BOOST_TEST_EQ(sizeof(little_uint24_buf_t), 3u);
      BOOST_TEST_EQ(sizeof(little_uint32_buf_t), 4u);
      BOOST_TEST_EQ(sizeof(little_uint40_buf_t), 5u);
      BOOST_TEST_EQ(sizeof(little_uint48_buf_t), 6u);
      BOOST_TEST_EQ(sizeof(little_uint56_buf_t), 7u);
      BOOST_TEST_EQ(sizeof(little_uint64_buf_t), 8u);
  
      BOOST_TEST_EQ(sizeof(little_float32_buf_t), 4u);
      BOOST_TEST_EQ(sizeof(little_float64_buf_t), 8u);
  
      BOOST_TEST_EQ(sizeof(native_int8_buf_t), 1u);
      BOOST_TEST_EQ(sizeof(native_int16_buf_t), 2u);
      BOOST_TEST_EQ(sizeof(native_int24_buf_t), 3u);
      BOOST_TEST_EQ(sizeof(native_int32_buf_t), 4u);
      BOOST_TEST_EQ(sizeof(native_int40_buf_t), 5u);
      BOOST_TEST_EQ(sizeof(native_int48_buf_t), 6u);
      BOOST_TEST_EQ(sizeof(native_int56_buf_t), 7u);
      BOOST_TEST_EQ(sizeof(native_int64_buf_t), 8u);
  
      BOOST_TEST_EQ(sizeof(native_uint8_buf_t), 1u);
      BOOST_TEST_EQ(sizeof(native_uint16_buf_t), 2u);
      BOOST_TEST_EQ(sizeof(native_uint24_buf_t), 3u);
      BOOST_TEST_EQ(sizeof(native_uint32_buf_t), 4u);
      BOOST_TEST_EQ(sizeof(native_uint40_buf_t), 5u);
      BOOST_TEST_EQ(sizeof(native_uint48_buf_t), 6u);
      BOOST_TEST_EQ(sizeof(native_uint56_buf_t), 7u);
      BOOST_TEST_EQ(sizeof(native_uint64_buf_t), 8u);
  
      BOOST_TEST_EQ(sizeof(native_float32_buf_t), 4u);
      BOOST_TEST_EQ(sizeof(native_float64_buf_t), 8u);
  
      BOOST_TEST_EQ(sizeof(big_int8_buf_at), 1u);
      BOOST_TEST_EQ(sizeof(big_int16_buf_at), 2u);
      BOOST_TEST_EQ(sizeof(big_int32_buf_at), 4u);
      BOOST_TEST_EQ(sizeof(big_int64_buf_at), 8u);
  
      BOOST_TEST_EQ(sizeof(big_uint8_buf_at), 1u);
      BOOST_TEST_EQ(sizeof(big_uint16_buf_at), 2u);
      BOOST_TEST_EQ(sizeof(big_uint32_buf_at), 4u);
      BOOST_TEST_EQ(sizeof(big_uint64_buf_at), 8u);
  
      BOOST_TEST_EQ(sizeof(big_float32_buf_at), 4u);
      BOOST_TEST_EQ(sizeof(big_float64_buf_at), 8u);
  
      BOOST_TEST_EQ(sizeof(little_int8_buf_at), 1u);
      BOOST_TEST_EQ(sizeof(little_int16_buf_at), 2u);
      BOOST_TEST_EQ(sizeof(little_int32_buf_at), 4u);
      BOOST_TEST_EQ(sizeof(little_int64_buf_at), 8u);
  
      BOOST_TEST_EQ(sizeof(little_uint8_buf_at), 1u);
      BOOST_TEST_EQ(sizeof(little_uint16_buf_at), 2u);
      BOOST_TEST_EQ(sizeof(little_uint32_buf_at), 4u);
      BOOST_TEST_EQ(sizeof(little_uint64_buf_at), 8u);
  
      BOOST_TEST_EQ(sizeof(little_float32_buf_at), 4u);
      BOOST_TEST_EQ(sizeof(little_float64_buf_at), 8u);
  
    } // check_size
  
    //  test_inserter_and_extractor  -----------------------------------------------------//
  
    void test_inserter_and_extractor()
    {
      std::cout << "test inserter and extractor..." << std::endl;
  
      big_uint64_buf_t bu64(0x010203040506070ULL);
      little_uint64_buf_t lu64(0x010203040506070ULL);
  
      boost::uint64_t x;
  
      std::stringstream ss;
  
      ss << bu64;
      ss >> x;
      BOOST_TEST_EQ(x, 0x010203040506070ULL);
  
      ss.clear();
      ss << lu64;
      ss >> x;
      BOOST_TEST_EQ(x, 0x010203040506070ULL);
  
      ss.clear();
      ss << 0x010203040506070ULL;
      big_uint64_buf_t bu64z(0);
      ss >> bu64z;
      BOOST_TEST_EQ(bu64z.value(), bu64.value());
  
      ss.clear();
      ss << 0x010203040506070ULL;
      little_uint64_buf_t lu64z(0);
      ss >> lu64z;
      BOOST_TEST_EQ(lu64z.value(), lu64.value());
  
      std::cout << "test inserter and extractor complete" << std::endl;
  
    }
  
    template<class T> struct unaligned
    {
      char x;
      T y;
    };
  
    template<class T> void test_buffer_type( typename T::value_type v1, typename T::value_type v2 )
    {
      T buffer( v1 );
      BOOST_TEST_EQ( buffer.value(), v1 );
  
      buffer = v2;
      BOOST_TEST_EQ( buffer.value(), v2 );
  
      unaligned<T> buffer2 = { 0, T( v1 ) };
      BOOST_TEST_EQ( buffer2.y.value(), v1 );
  
      buffer2.y = v2;
      BOOST_TEST_EQ( buffer2.y.value(), v2 );
    }
  
    void test_construction_and_assignment()
    {
      std::cout << "test construction and assignment..." << std::endl;
  
      test_buffer_type< big_int8_buf_at>( 0x01, -0x01 );
      test_buffer_type<big_int16_buf_at>( 0x0102, -0x0102 );
      test_buffer_type<big_int32_buf_at>( 0x01020304, -0x01020304 );
      test_buffer_type<big_int64_buf_at>( 0x0102030405060708LL, -0x0102030405060708LL );
  
      test_buffer_type< big_uint8_buf_at>( 0x01, 0xFE );
      test_buffer_type<big_uint16_buf_at>( 0x0102, 0xFE02 );
      test_buffer_type<big_uint32_buf_at>( 0x01020304, 0xFE020304 );
      test_buffer_type<big_uint64_buf_at>( 0x0102030405060708ULL, 0xFE02030405060708ULL );
  
      test_buffer_type<big_float32_buf_at>( +1.5f, -3.14f );
      test_buffer_type<big_float64_buf_at>( +1.5, -3.14 );
  
      test_buffer_type< little_int8_buf_at>( 0x01, -0x01 );
      test_buffer_type<little_int16_buf_at>( 0x0102, -0x0102 );
      test_buffer_type<little_int32_buf_at>( 0x01020304, -0x01020304 );
      test_buffer_type<little_int64_buf_at>( 0x0102030405060708LL, -0x0102030405060708LL );
  
      test_buffer_type< little_uint8_buf_at>( 0x01, 0xFE );
      test_buffer_type<little_uint16_buf_at>( 0x0102, 0xFE02 );
      test_buffer_type<little_uint32_buf_at>( 0x01020304, 0xFE020304 );
      test_buffer_type<little_uint64_buf_at>( 0x0102030405060708ULL, 0xFE02030405060708ULL );
  
      test_buffer_type<little_float32_buf_at>( +1.5f, -3.14f );
      test_buffer_type<little_float64_buf_at>( +1.5, -3.14 );
  
      test_buffer_type< big_int8_buf_t>( 0x01, -0x01 );
      test_buffer_type<big_int16_buf_t>( 0x0102, -0x0102 );
      test_buffer_type<big_int24_buf_t>( 0x010203, -0x010203 );
      test_buffer_type<big_int32_buf_t>( 0x01020304, -0x01020304 );
      test_buffer_type<big_int40_buf_t>( 0x0102030405LL, -0x0102030405LL );
      test_buffer_type<big_int48_buf_t>( 0x010203040506LL, -0x010203040506LL );
      test_buffer_type<big_int56_buf_t>( 0x01020304050607LL, -0x01020304050607LL );
      test_buffer_type<big_int64_buf_t>( 0x0102030405060708LL, -0x0102030405060708LL );
  
      test_buffer_type<big_float32_buf_t>( +1.5f, -3.14f );
      test_buffer_type<big_float64_buf_t>( +1.5, -3.14 );
  
      test_buffer_type< little_uint8_buf_t>( 0x01, 0xFE );
      test_buffer_type<little_uint16_buf_t>( 0x0102, 0xFE02 );
      test_buffer_type<little_uint24_buf_t>( 0x010203, 0xFE0203 );
      test_buffer_type<little_uint32_buf_t>( 0x01020304, 0xFE020304 );
      test_buffer_type<little_uint40_buf_t>( 0x0102030405ULL, 0xFE02030405ULL );
      test_buffer_type<little_uint48_buf_t>( 0x010203040506ULL, 0xFE0203040506ULL );
      test_buffer_type<little_uint56_buf_t>( 0x01020304050607ULL, 0xFE020304050607ULL );
      test_buffer_type<little_uint64_buf_t>( 0x0102030405060708ULL, 0xFE02030405060708ULL );
  
      test_buffer_type<little_float32_buf_t>( +1.5f, -3.14f );
      test_buffer_type<little_float64_buf_t>( +1.5, -3.14 );
  
      std::cout << "test construction and assignment complete" << std::endl;
    }
  
    template <typename T>
    void test_boundary_values_()
    {
      test_buffer_type< endian_buffer<order::big,    T, sizeof(T) * CHAR_BIT, align::no > >( std::numeric_limits<T>::min(), std::numeric_limits<T>::max() );
      test_buffer_type< endian_buffer<order::little, T, sizeof(T) * CHAR_BIT, align::no > >( std::numeric_limits<T>::min(), std::numeric_limits<T>::max() );
      test_buffer_type< endian_buffer<order::big,    T, sizeof(T) * CHAR_BIT, align::yes> >( std::numeric_limits<T>::min(), std::numeric_limits<T>::max() );
      test_buffer_type< endian_buffer<order::little, T, sizeof(T) * CHAR_BIT, align::yes> >( std::numeric_limits<T>::min(), std::numeric_limits<T>::max() );
    }
  
    void test_boundary_values()
    {
      std::cout << "test boundary values..." << std::endl;
  
      // integer types
  
      test_boundary_values_<signed char>();
      test_boundary_values_<unsigned char>();
      test_boundary_values_<signed short>();
      test_boundary_values_<unsigned short>();
      test_boundary_values_<signed int>();
      test_boundary_values_<unsigned int>();
      test_boundary_values_<signed long>();
      test_boundary_values_<unsigned long>();
      test_boundary_values_<signed long long>();
      test_boundary_values_<unsigned long long>();
  
      // character types
  
      test_boundary_values_<char>();
  
  #if !defined(BOOST_NO_CXX11_CHAR16_T)
      test_boundary_values_<char16_t>();
  #endif
  
  #if !defined(BOOST_NO_CXX11_CHAR32_T)
      test_boundary_values_<char32_t>();
  #endif
  
      // floating-point types
  
      test_boundary_values_<float>();
      test_boundary_values_<double>();
  
      std::cout << "test boundary values complete" << std::endl;
    }
  
  }  // unnamed namespace
  
  //--------------------------------------------------------------------------------------//
  
  int cpp_main(int, char *[])
  {
    cout << "byte swap intrinsics: " BOOST_ENDIAN_INTRINSIC_MSG << endl;
  
    cout << "  construct big endian aligned" << endl;
    big_int32_buf_at x(1122334455);
  
    cout << "  assign to buffer from built-in integer" << endl;
    x = 1234567890;
  
    cout << "  operator==(buffer.value(), built-in)" << endl;
    bool b1(x.value() == 1234567890);
    BOOST_TEST(b1);
  
    cout << "  construct little endian unaligned" << endl;
    little_int32_buf_t x2(1122334455);
  
    cout << "  assign to buffer from built-in integer" << endl;
    x2 = 1234567890;
  
    cout << "  operator==(buffer.value(), built-in)" << endl;
    bool b2(x2.value() == 1234567890);
    BOOST_TEST(b2);
  
    check_size();
    test_inserter_and_extractor();
    test_construction_and_assignment();
    test_boundary_values();
  
    cout << "  done" << endl;
  
    return ::boost::report_errors();
  }
  
  int main( int argc, char* argv[] )
  {
      try
      {
          return cpp_main( argc, argv );
      }
      catch( std::exception const & x )
      {
          BOOST_ERROR( x.what() );
          return boost::report_errors();
      }
  }
  
  #include <boost/endian/detail/disable_warnings_pop.hpp>
  