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/*
This file is part of Warzone 2100.
Copyright (C) 1999-2004 Eidos Interactive
Copyright (C) 2005-2020 Warzone 2100 Project
Warzone 2100 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 2 of the License, or
(at your option) any later version.
Warzone 2100 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 Warzone 2100; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* Endianness functions
*/
#ifndef ENDIAN_HACK_H
#define ENDIAN_HACK_H
#include <string.h>
static inline void endian_uword(UWORD *p)
{
STATIC_ASSERT(sizeof(*p) == 2);
uint8_t bytes[sizeof(*p)];
memcpy(bytes, p, sizeof(*p));
*p = bytes[1] << 8 | bytes[0];
}
static inline void endian_sword(SWORD *p)
{
STATIC_ASSERT(sizeof(*p) == 2);
uint8_t bytes[sizeof(*p)];
memcpy(bytes, p, sizeof(*p));
*p = bytes[1] << 8 | bytes[0];
}
static inline void endian_udword(UDWORD *p)
{
STATIC_ASSERT(sizeof(*p) == 4);
uint8_t bytes[sizeof(*p)];
memcpy(bytes, p, sizeof(*p));
*p = bytes[3] << 24 | bytes[2] << 16 | bytes[1] << 8 | bytes[0];
}
static inline void endian_sdword(SDWORD *p)
{
STATIC_ASSERT(sizeof(*p) == 4);
uint8_t bytes[sizeof(*p)];
memcpy(bytes, p, sizeof(*p));
*p = bytes[3] << 24 | bytes[2] << 16 | bytes[1] << 8 | bytes[0];
}
template <typename ENUM>
static inline void endian_enum(ENUM *p)
{
STATIC_ASSERT(sizeof(*p) == 4);
uint8_t bytes[sizeof(*p)];
memcpy(bytes, p, sizeof(*p));
*p = ENUM(bytes[3] << 24 | bytes[2] << 16 | bytes[1] << 8 | bytes[0]);
}
#endif // ENDIAN_HACK_H
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