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// conversion_test.cpp ---------------------------------------------------------------//
// Copyright Beman Dawes 2010
// Distributed under the Boost Software License, Version 1.0.
// See http://www.boost.org/LICENSE_1_0.txt
//--------------------------------------------------------------------------------------//
#include <boost/endian/detail/disable_warnings.hpp>
#include <boost/endian/conversion.hpp>
#include <boost/detail/lightweight_main.hpp>
#include <boost/core/lightweight_test.hpp>
#include <iostream>
#include <cstring>
#include <algorithm>
namespace be = boost::endian;
using std::cout;
using std::endl;
using boost::int8_t;
using boost::uint8_t;
using boost::int16_t;
using boost::uint16_t;
using boost::int32_t;
using boost::uint32_t;
using boost::int64_t;
using boost::uint64_t;
template <class T> inline T std_endian_reverse(T x) BOOST_NOEXCEPT
{
T tmp(x);
std::reverse( reinterpret_cast<unsigned char*>(&tmp), reinterpret_cast<unsigned char*>(&tmp) + sizeof(T) );
return tmp;
}
namespace
{
// values for tests
void native_value(int8_t& x) {x = static_cast<int8_t>(0xF0U);}
void native_value(uint8_t& x) {x = static_cast<uint8_t>(0xF0U);}
# if BOOST_ENDIAN_BIG_BYTE
void big_value(int8_t& x) {x = static_cast<int8_t>(0xF0U);}
void big_value(uint8_t& x) {x = static_cast<uint8_t>(0xF0U);}
void little_value(int8_t& x) {x = static_cast<int8_t>(0xF0U);}
void little_value(uint8_t& x) {x = static_cast<uint8_t>(0xF0U);}
# else
void big_value(int8_t& x) {x = static_cast<int8_t>(0xF0U);}
void big_value(uint8_t& x) {x = static_cast<uint8_t>(0xF0U);}
void little_value(int8_t& x) {x = static_cast<int8_t>(0xF0U);}
void little_value(uint8_t& x) {x = static_cast<uint8_t>(0xF0U);}
# endif
void native_value(int16_t& x) {x = static_cast<int16_t>(0xF102U);}
void native_value(uint16_t& x) {x = static_cast<uint16_t>(0xF102U);}
# if BOOST_ENDIAN_BIG_BYTE
void big_value(int16_t& x) {x = static_cast<int16_t>(0xF102U);}
void big_value(uint16_t& x) {x = static_cast<uint16_t>(0xF102U);}
void little_value(int16_t& x) {x = static_cast<int16_t>(0x02F1U);}
void little_value(uint16_t& x) {x = static_cast<uint16_t>(0x02F1U);}
# else
void big_value(int16_t& x) {x = static_cast<int16_t>(0x02F1U);}
void big_value(uint16_t& x) {x = static_cast<uint16_t>(0x02F1U);}
void little_value(int16_t& x) {x = static_cast<int16_t>(0xF102U);}
void little_value(uint16_t& x) {x = static_cast<uint16_t>(0xF102U);}
# endif
void native_value(int32_t& x) {x = static_cast<int32_t>(0xF1E21304UL);}
void native_value(uint32_t& x) {x = static_cast<uint32_t>(0xF1E21304UL);}
# if BOOST_ENDIAN_BIG_BYTE
void big_value(int32_t& x) {x = static_cast<int32_t>(0xF1E21304UL);}
void big_value(uint32_t& x) {x = static_cast<uint32_t>(0xF1E21304UL);}
void little_value(int32_t& x) {x = static_cast<int32_t>(0x0413E2F1UL);}
void little_value(uint32_t& x) {x = static_cast<uint32_t>(0x0413E2F1UL);}
# else
void big_value(int32_t& x) {x = static_cast<int32_t>(0x0413E2F1UL);}
void big_value(uint32_t& x) {x = static_cast<uint32_t>(0x0413E2F1UL);}
void little_value(int32_t& x) {x = static_cast<int32_t>(0xF1E21304UL);}
void little_value(uint32_t& x) {x = static_cast<uint32_t>(0xF1E21304UL);}
# endif
void native_value(int64_t& x) {x = static_cast<int64_t>(0xF1E2D3C444231201ULL);}
void native_value(uint64_t& x) {x = static_cast<uint64_t>(0xF1E2D3C444231201ULL);}
# if BOOST_ENDIAN_BIG_BYTE
void big_value(int64_t& x) {x = static_cast<int64_t>(0xF1E2D3C444231201ULL);}
void big_value(uint64_t& x) {x = static_cast<uint64_t>(0xF1E2D3C444231201ULL);}
void little_value(int64_t& x) {x = static_cast<int64_t>(0x01122344C4D3E2F1ULL);}
void little_value(uint64_t& x) {x = static_cast<uint64_t>(0x01122344C4D3E2F1ULL);}
# else
void big_value(int64_t& x) {x = static_cast<int64_t>(0x01122344C4D3E2F1ULL);}
void big_value(uint64_t& x) {x = static_cast<uint64_t>(0x01122344C4D3E2F1ULL);}
void little_value(int64_t& x) {x = static_cast<int64_t>(0xF1E2D3C444231201ULL);}
void little_value(uint64_t& x) {x = static_cast<uint64_t>(0xF1E2D3C444231201ULL);}
# endif
template <class T>
void test()
{
T native;
T big;
T little;
native_value(native);
big_value(big);
little_value(little);
// validate the values used by the tests below
# if BOOST_ENDIAN_BIG_BYTE
BOOST_TEST_EQ(native, big);
BOOST_TEST_EQ(::std_endian_reverse(native), little);
# else
BOOST_TEST_EQ(::std_endian_reverse(native), big);
BOOST_TEST_EQ(native, little);
# endif
// value-by-value tests
// unconditional reverse
BOOST_TEST_EQ(be::endian_reverse(big), little);
BOOST_TEST_EQ(be::endian_reverse(little), big);
// conditional reverse
BOOST_TEST_EQ(be::native_to_big(native), big);
BOOST_TEST_EQ(be::native_to_little(native), little);
BOOST_TEST_EQ(be::big_to_native(big), native);
BOOST_TEST_EQ(be::little_to_native(little), native);
// generic conditional reverse
BOOST_TEST_EQ((be::conditional_reverse<be::order::big, be::order::big>(big)), big);
BOOST_TEST_EQ((be::conditional_reverse<be::order::little,
be::order::little>(little)), little);
BOOST_TEST_EQ((be::conditional_reverse<be::order::native,
be::order::native>(native)), native);
BOOST_TEST_EQ((be::conditional_reverse<be::order::big,
be::order::little>(big)), little);
BOOST_TEST_EQ((be::conditional_reverse<be::order::big,
be::order::native>(big)), native);
BOOST_TEST_EQ((be::conditional_reverse<be::order::little,
be::order::big>(little)), big);
BOOST_TEST_EQ((be::conditional_reverse<be::order::little,
be::order::native>(little)), native);
BOOST_TEST_EQ((be::conditional_reverse<be::order::native,
be::order::big>(native)), big);
BOOST_TEST_EQ((be::conditional_reverse<be::order::native,
be::order::little>(native)), little);
// runtime conditional reverse
BOOST_TEST_EQ((be::conditional_reverse(big, be::order::big, be::order::big)),
big);
BOOST_TEST_EQ((be::conditional_reverse(little, be::order::little,
be::order::little)), little);
BOOST_TEST_EQ((be::conditional_reverse(native, be::order::native,
be::order::native)), native);
BOOST_TEST_EQ((be::conditional_reverse(big, be::order::big,
be::order::little)), little);
BOOST_TEST_EQ((be::conditional_reverse(big, be::order::big,
be::order::native)), native);
BOOST_TEST_EQ((be::conditional_reverse(little, be::order::little,
be::order::big)), big);
BOOST_TEST_EQ((be::conditional_reverse(little, be::order::little,
be::order::native)), native);
BOOST_TEST_EQ((be::conditional_reverse(native, be::order::native,
be::order::big)), big);
BOOST_TEST_EQ((be::conditional_reverse(native, be::order::native,
be::order::little)), little);
// modify-in-place tests
T x;
// unconditional reverse
x = big; be::endian_reverse_inplace(x); BOOST_TEST_EQ(x, little);
x = little; be::endian_reverse_inplace(x); BOOST_TEST_EQ(x, big);
// conditional reverse
x = native; be::native_to_big_inplace(x); BOOST_TEST_EQ(x, big);
x = native; be::native_to_little_inplace(x); BOOST_TEST_EQ(x, little);
x = big; be::big_to_native_inplace(x); BOOST_TEST_EQ(x, native);
x = little; be::little_to_native_inplace(x); BOOST_TEST_EQ(x, native);
// generic conditional reverse
x = big; be::conditional_reverse_inplace<be::order::big, be::order::big>(x);
BOOST_TEST_EQ(x, big);
x = little; be::conditional_reverse_inplace<be::order::little, be::order::little>(x);
BOOST_TEST_EQ(x, little);
x = native; be::conditional_reverse_inplace<be::order::native, be::order::native>(x);
BOOST_TEST_EQ(x, native);
x = big; be::conditional_reverse_inplace<be::order::big, be::order::little>(x);
BOOST_TEST_EQ(x, little);
x = big; be::conditional_reverse_inplace<be::order::big, be::order::native>(x);
BOOST_TEST_EQ(x, native);
x = little; be::conditional_reverse_inplace<be::order::little, be::order::big>(x);
BOOST_TEST_EQ(x, big);
x = little; be::conditional_reverse_inplace<be::order::little, be::order::native>(x);
BOOST_TEST_EQ(x, native);
x = native; be::conditional_reverse_inplace<be::order::native, be::order::big>(x);
BOOST_TEST_EQ(x, big);
x = native; be::conditional_reverse_inplace<be::order::native, be::order::little>(x);
BOOST_TEST_EQ(x, little);
// runtime conditional reverse
x = big;
be::conditional_reverse_inplace(x, be::order::big, be::order::big);
BOOST_TEST_EQ(x, big);
x = little;
be::conditional_reverse_inplace(x, be::order::little, be::order::little);
BOOST_TEST_EQ(x, little);
x = native;
be::conditional_reverse_inplace(x, be::order::native, be::order::native);
BOOST_TEST_EQ(x, native);
x = big;
be::conditional_reverse_inplace(x, be::order::big, be::order::little);
BOOST_TEST_EQ(x, little);
x = big;
be::conditional_reverse_inplace(x, be::order::big, be::order::native);
BOOST_TEST_EQ(x, native);
x = little;
be::conditional_reverse_inplace(x, be::order::little, be::order::big);
BOOST_TEST_EQ(x, big);
x = little;
be::conditional_reverse_inplace(x, be::order::little, be::order::native);
BOOST_TEST_EQ(x, native);
x = native;
be::conditional_reverse_inplace(x, be::order::native, be::order::big);
BOOST_TEST_EQ(x, big);
x = native;
be::conditional_reverse_inplace(x, be::order::native, be::order::little);
BOOST_TEST_EQ(x, little);
}
//--------------------------------------------------------------------------------------//
template <class UDT>
void udt_test()
{
UDT udt, tmp;
int64_t big;
int64_t little;
int64_t native;
big_value(big);
little_value(little);
native_value(native);
udt.member1 = big;
udt.member2 = little;
udt.member3 = native;
tmp = be::conditional_reverse<be::order::big, be::order::little>(udt);
BOOST_TEST_EQ(tmp.member1, be::endian_reverse(big));
BOOST_TEST_EQ(tmp.member2, be::endian_reverse(little));
BOOST_TEST_EQ(tmp.member3, be::endian_reverse(native));
be::conditional_reverse_inplace<be::order::big, be::order::little>(udt);
BOOST_TEST_EQ(udt.member1, be::endian_reverse(big));
BOOST_TEST_EQ(udt.member2, be::endian_reverse(little));
BOOST_TEST_EQ(udt.member3, be::endian_reverse(native));
udt.member1 = big;
udt.member2 = little;
udt.member3 = native;
tmp.member1 = tmp.member2 = tmp.member3 = 0;
tmp = be::conditional_reverse<be::order::big, be::order::big>(udt);
BOOST_TEST_EQ(tmp.member1, big);
BOOST_TEST_EQ(tmp.member2, little);
BOOST_TEST_EQ(tmp.member3, native);
be::conditional_reverse_inplace<be::order::big, be::order::big>(udt);
BOOST_TEST_EQ(udt.member1, big);
BOOST_TEST_EQ(udt.member2, little);
BOOST_TEST_EQ(udt.member3, native);
}
} // unnamed namespace
//--------------------------------------------------------------------------------------//
// User-defined types
namespace user
{
// UDT1 supplies both endian_reverse and endian_reverse_inplace
struct UDT1
{
int64_t member1;
int64_t member2;
int64_t member3;
};
UDT1 endian_reverse(const UDT1& udt) BOOST_NOEXCEPT
{
UDT1 tmp;
tmp.member1 = boost::endian::endian_reverse(udt.member1);
tmp.member2 = boost::endian::endian_reverse(udt.member2);
tmp.member3 = boost::endian::endian_reverse(udt.member3);
return tmp;
}
void endian_reverse_inplace(UDT1& udt) BOOST_NOEXCEPT
{
boost::endian::endian_reverse_inplace(udt.member1);
boost::endian::endian_reverse_inplace(udt.member2);
boost::endian::endian_reverse_inplace(udt.member3);
}
// UDT2 supplies only endian_reverse
struct UDT2
{
int64_t member1;
int64_t member2;
int64_t member3;
};
UDT2 endian_reverse(const UDT2& udt) BOOST_NOEXCEPT
{
UDT2 tmp;
tmp.member1 = boost::endian::endian_reverse(udt.member1);
tmp.member2 = boost::endian::endian_reverse(udt.member2);
tmp.member3 = boost::endian::endian_reverse(udt.member3);
return tmp;
}
// UDT3 supplies neither endian_reverse nor endian_reverse_inplace,
// so udt_test<UDT3>() should fail to compile
struct UDT3
{
int64_t member1;
int64_t member2;
int64_t member3;
};
} // namespace user
//--------------------------------------------------------------------------------------//
int cpp_main(int, char * [])
{
cout << "byte swap intrinsics: " BOOST_ENDIAN_INTRINSIC_MSG << endl;
//std::cerr << std::hex;
cout << "int8_t" << endl;
test<int8_t>();
cout << "uint8_t" << endl;
test<uint8_t>();
cout << "int16_t" << endl;
test<int16_t>();
cout << "uint16_t" << endl;
test<uint16_t>();
cout << "int32_t" << endl;
test<int32_t>();
cout << "uint32_t" << endl;
test<uint32_t>();
cout << "int64_t" << endl;
test<int64_t>();
cout << "uint64_t" << endl;
test<uint64_t>();
cout << "UDT 1" << endl;
udt_test<user::UDT1>();
cout << "UDT 2" << endl;
udt_test<user::UDT2>();
#ifdef BOOST_ENDIAN_COMPILE_FAIL
cout << "UDT 3" << endl;
udt_test<user::UDT3>(); // should fail to compile since has not endian_reverse()
#endif
return ::boost::report_errors();
}
#include <boost/endian/detail/disable_warnings_pop.hpp>
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