ceph/src/boost/libs/endian/test/endian_reverse_test.cpp

   1 // Copyright 2019 Peter Dimov
   2 //
   3 // Distributed under the Boost Software License, Version 1.0.
   4 // http://www.boost.org/LICENSE_1_0.txt
   5
   6 #if defined(_MSC_VER)
   7 # pragma warning( disable: 4309 ) // static_cast: truncation of constant value
   8 #endif
   9
  10 #include <boost/endian/conversion.hpp>
  11 #include <boost/core/lightweight_test.hpp>
  12 #include <boost/config.hpp>
  13 #include <cstddef>
  14
  15 template<class T, std::size_t N = sizeof(T)> struct test_value
  16 {
  17 };
  18
  19 template<class T> struct test_value<T, 1>
  20 {
  21     static const T v1 = static_cast<T>( 0x1F );
  22     static const T w1 = static_cast<T>( 0x1F );
  23
  24     static const T v2 = static_cast<T>( 0xF1 );
  25     static const T w2 = static_cast<T>( 0xF1 );
  26 };
  27
  28 template<class T> T const test_value<T, 1>::v1;
  29 template<class T> T const test_value<T, 1>::w1;
  30 template<class T> T const test_value<T, 1>::v2;
  31 template<class T> T const test_value<T, 1>::w2;
  32
  33 template<class T> struct test_value<T, 2>
  34 {
  35     static const T v1 = static_cast<T>( 0x1F2E );
  36     static const T w1 = static_cast<T>( 0x2E1F );
  37
  38     static const T v2 = static_cast<T>( 0xF1E2 );
  39     static const T w2 = static_cast<T>( 0xE2F1 );
  40 };
  41
  42 template<class T> T const test_value<T, 2>::v1;
  43 template<class T> T const test_value<T, 2>::w1;
  44 template<class T> T const test_value<T, 2>::v2;
  45 template<class T> T const test_value<T, 2>::w2;
  46
  47 template<class T> struct test_value<T, 4>
  48 {
  49     static const T v1 = static_cast<T>( 0x1F2E3D4C );
  50     static const T w1 = static_cast<T>( 0x4C3D2E1F );
  51
  52     static const T v2 = static_cast<T>( 0xF1E2D3C4 );
  53     static const T w2 = static_cast<T>( 0xC4D3E2F1 );
  54 };
  55
  56 template<class T> T const test_value<T, 4>::v1;
  57 template<class T> T const test_value<T, 4>::w1;
  58 template<class T> T const test_value<T, 4>::v2;
  59 template<class T> T const test_value<T, 4>::w2;
  60
  61 template<class T> struct test_value<T, 8>
  62 {
  63     static const T v1 = static_cast<T>( 0x1F2E3D4C5B6A7988ull );
  64     static const T w1 = static_cast<T>( 0x88796A5B4C3D2E1Full );
  65
  66     static const T v2 = static_cast<T>( 0xF1E2D3C4B5A69788ull );
  67     static const T w2 = static_cast<T>( 0x8897A6B5C4D3E2F1ull );
  68 };
  69
  70 template<class T> T const test_value<T, 8>::v1;
  71 template<class T> T const test_value<T, 8>::w1;
  72 template<class T> T const test_value<T, 8>::v2;
  73 template<class T> T const test_value<T, 8>::w2;
  74
  75 #if defined(BOOST_HAS_INT128)
  76
  77 template<class T> struct test_value<T, 16>
  78 {
  79     static const T v1 = static_cast<T>( 0x1F2E3D4C5B6A7988ull ) << 64 | static_cast<T>( 0xF1E2D3C4B5A69780ull );
  80     static const T w1 = static_cast<T>( 0x8097A6B5C4D3E2F1ull ) << 64 | static_cast<T>( 0x88796A5B4C3D2E1Full );
  81
  82     static const T v2 = static_cast<T>( 0xF1E2D3C4B5A69788ull ) << 64 | static_cast<T>( 0x1F2E3D4C5B6A7980ull );
  83     static const T w2 = static_cast<T>( 0x80796A5B4C3D2E1Full ) << 64 | static_cast<T>( 0x8897A6B5C4D3E2F1ull );
  84 };
  85
  86 template<class T> T const test_value<T, 16>::v1;
  87 template<class T> T const test_value<T, 16>::w1;
  88 template<class T> T const test_value<T, 16>::v2;
  89 template<class T> T const test_value<T, 16>::w2;
  90
  91 #endif // #if defined(BOOST_HAS_INT128)
  92
  93 template<class T> void test()
  94 {
  95     using boost::endian::endian_reverse;
  96     using boost::endian::endian_reverse_inplace;
  97
  98     {
  99         T t1 = test_value<T>::v1;
 100
 101         T t2 = endian_reverse( t1 );
 102         BOOST_TEST_EQ( t2, test_value<T>::w1 );
 103
 104         T t3 = endian_reverse( t2 );
 105         BOOST_TEST_EQ( t3, t1 );
 106
 107         T t4 = t1;
 108
 109         endian_reverse_inplace( t4 );
 110         BOOST_TEST_EQ( t4, test_value<T>::w1 );
 111
 112         endian_reverse_inplace( t4 );
 113         BOOST_TEST_EQ( t4, t1 );
 114     }
 115
 116     {
 117         T t1 = test_value<T>::v2;
 118
 119         T t2 = endian_reverse( t1 );
 120         BOOST_TEST_EQ( t2, test_value<T>::w2 );
 121
 122         T t3 = endian_reverse( t2 );
 123         BOOST_TEST_EQ( t3, t1 );
 124
 125         T t4 = t1;
 126
 127         endian_reverse_inplace( t4 );
 128         BOOST_TEST_EQ( t4, test_value<T>::w2 );
 129
 130         endian_reverse_inplace( t4 );
 131         BOOST_TEST_EQ( t4, t1 );
 132     }
 133 }
 134
 135 template<class T> void test_np()
 136 {
 137     using boost::endian::endian_reverse;
 138     using boost::endian::endian_reverse_inplace;
 139
 140     {
 141         T t1 = test_value<T>::v1;
 142
 143         T t2 = endian_reverse( t1 );
 144         BOOST_TEST( t2 == test_value<T>::w1 );
 145
 146         T t3 = endian_reverse( t2 );
 147         BOOST_TEST( t3 == t1 );
 148
 149         T t4 = t1;
 150
 151         endian_reverse_inplace( t4 );
 152         BOOST_TEST( t4 == test_value<T>::w1 );
 153
 154         endian_reverse_inplace( t4 );
 155         BOOST_TEST( t4 == t1 );
 156     }
 157
 158     {
 159         T t1 = test_value<T>::v2;
 160
 161         T t2 = endian_reverse( t1 );
 162         BOOST_TEST( t2 == test_value<T>::w2 );
 163
 164         T t3 = endian_reverse( t2 );
 165         BOOST_TEST( t3 == t1 );
 166
 167         T t4 = t1;
 168
 169         endian_reverse_inplace( t4 );
 170         BOOST_TEST( t4 == test_value<T>::w2 );
 171
 172         endian_reverse_inplace( t4 );
 173         BOOST_TEST( t4 == t1 );
 174     }
 175 }
 176
 177 int main()
 178 {
 179     test<boost::int8_t>();
 180     test<boost::uint8_t>();
 181
 182     test<boost::int16_t>();
 183     test<boost::uint16_t>();
 184
 185     test<boost::int32_t>();
 186     test<boost::uint32_t>();
 187
 188     test<boost::int64_t>();
 189     test<boost::uint64_t>();
 190
 191     test<char>();
 192     test<unsigned char>();
 193     test<signed char>();
 194
 195     test<short>();
 196     test<unsigned short>();
 197
 198     test<int>();
 199     test<unsigned int>();
 200
 201     test<long>();
 202     test<unsigned long>();
 203
 204     test<long long>();
 205     test<unsigned long long>();
 206
 207 #if !defined(BOOST_NO_CXX11_CHAR16_T)
 208     test<char16_t>();
 209 #endif
 210
 211 #if !defined(BOOST_NO_CXX11_CHAR32_T)
 212     test<char32_t>();
 213 #endif
 214
 215 #if defined(BOOST_HAS_INT128)
 216
 217     test_np<boost::int128_type>();
 218     test_np<boost::uint128_type>();
 219
 220 #endif
 221
 222     return boost::report_errors();
 223 }