AnimTestbed/3rdparty/ozz-animation/test/base/endianness_tests.cc

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2021-11-11 21:22:24 +01:00
//----------------------------------------------------------------------------//
// //
// ozz-animation is hosted at http://github.com/guillaumeblanc/ozz-animation //
// and distributed under the MIT License (MIT). //
// //
// Copyright (c) Guillaume Blanc //
// //
// Permission is hereby granted, free of charge, to any person obtaining a //
// copy of this software and associated documentation files (the "Software"), //
// to deal in the Software without restriction, including without limitation //
// the rights to use, copy, modify, merge, publish, distribute, sublicense, //
// and/or sell copies of the Software, and to permit persons to whom the //
// Software is furnished to do so, subject to the following conditions: //
// //
// The above copyright notice and this permission notice shall be included in //
// all copies or substantial portions of the Software. //
// //
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR //
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, //
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL //
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER //
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING //
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER //
// DEALINGS IN THE SOFTWARE. //
// //
//----------------------------------------------------------------------------//
#include "ozz/base/endianness.h"
#include "gtest/gtest.h"
TEST(NativeEndianness, Endianness) {
// Uses pre-defined macro to check know endianness.
// Endianness detection does not rely on this as this is not standard, but it
// helps with testing.
// x86 and x86-64 Little endian processors.
#if defined(i386) || defined(__i386__) || /*GNU C*/ \
defined(__X86__) || /*MinGW32*/ \
defined(__x86_64__) || /*Intel C/C++*/ \
defined(_M_IX86) || /*Visual Studio*/ \
defined(_M_X64) /*Visual Studio*/
EXPECT_EQ(ozz::GetNativeEndianness(), ozz::kLittleEndian);
#endif
// PowerPc Big endian processors.
#if defined(__POWERPC__) || defined(__ppc__) || \
defined(__powerpc__) || /*GNU C*/ \
defined(__IA64__) || defined(__ia64__) || \
defined(_M_PPC) /*Visual Studio*/
EXPECT_EQ(ozz::GetNativeEndianness(), ozz::kBigEndian);
#endif
// Itanium Big endian processors.
#if defined(_IA64) || /*GNU C*/ \
defined(_M_IA64) || /*Visual Studio*/ \
defined(_M_IA64) /*Intel C/C++*/
EXPECT_EQ(ozz::GetNativeEndianness(), ozz::kBigEndian);
#endif
}
TEST(Swap, Endianness) {
{ // 1 byte swapping.
uint8_t uo = 0x46;
EXPECT_EQ(ozz::EndianSwap(uo), 0x46);
}
{ // 1 byte array swapping.
uint8_t uo[] = {0x46, 0x58};
ozz::EndianSwap(uo, OZZ_ARRAY_SIZE(uo));
EXPECT_EQ(uo[0], 0x46);
EXPECT_EQ(uo[1], 0x58);
}
{ // 2 bytes swapping.
uint16_t uo = 0x4699;
EXPECT_EQ(ozz::EndianSwap(uo), 0x9946);
}
{ // 2 bytes array swapping.
uint16_t uo[] = {0x4699, 0x5814};
ozz::EndianSwap(uo, OZZ_ARRAY_SIZE(uo));
EXPECT_EQ(uo[0], 0x9946);
EXPECT_EQ(uo[1], 0x1458);
}
{ // 4 bytes swapping.
uint32_t uo = 0x46992715;
EXPECT_EQ(ozz::EndianSwap(uo), 0x15279946u);
}
{ // 2 bytes array swapping.
uint32_t uo[] = {0x46992715, 0x58142611};
ozz::EndianSwap(uo, OZZ_ARRAY_SIZE(uo));
EXPECT_EQ(uo[0], 0x15279946u);
EXPECT_EQ(uo[1], 0x11261458u);
}
{ // 8 bytes swapping.
uint64_t uo = 0x4699271511190417ull;
EXPECT_EQ(ozz::EndianSwap(uo), 0x1704191115279946ull);
}
{ // 8 bytes array swapping.
uint64_t uo[] = {0x4699271511190417ull, 0x5814264669080735ull};
ozz::EndianSwap(uo, OZZ_ARRAY_SIZE(uo));
EXPECT_EQ(uo[0], 0x1704191115279946ull);
EXPECT_EQ(uo[1], 0x3507086946261458ull);
}
}