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/* SPDX-FileCopyrightText: 2026 Project Tick
* SPDX-FileContributor: Project Tick
* SPDX-License-Identifier: GPL-3.0-or-later
*
* MeshMC - A Custom Launcher for Minecraft
* Copyright (C) 2026 Project Tick
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#pragma once
#include <stdint.h>
/**
* Swap bytes between big endian and local number representation
*/
namespace util
{
#ifdef MULTIMC_BIG_ENDIAN
inline uint64_t bigswap(uint64_t x)
{
return x;
}
inline uint32_t bigswap(uint32_t x)
{
return x;
}
inline uint16_t bigswap(uint16_t x)
{
return x;
}
#else
inline uint64_t bigswap(uint64_t x)
{
return (x >> 56) | ((x << 40) & 0x00FF000000000000) |
((x << 24) & 0x0000FF0000000000) |
((x << 8) & 0x000000FF00000000) |
((x >> 8) & 0x00000000FF000000) |
((x >> 24) & 0x0000000000FF0000) |
((x >> 40) & 0x000000000000FF00) | (x << 56);
}
inline uint32_t bigswap(uint32_t x)
{
return (x >> 24) | ((x << 8) & 0x00FF0000) | ((x >> 8) & 0x0000FF00) |
(x << 24);
}
inline uint16_t bigswap(uint16_t x)
{
return (x >> 8) | (x << 8);
}
#endif
inline int64_t bigswap(int64_t x)
{
return static_cast<int64_t>(bigswap(static_cast<uint64_t>(x)));
}
inline int32_t bigswap(int32_t x)
{
return static_cast<int32_t>(bigswap(static_cast<uint32_t>(x)));
}
inline int16_t bigswap(int16_t x)
{
return static_cast<int16_t>(bigswap(static_cast<uint16_t>(x)));
}
} // namespace util
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