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/*
* Copyright (c) 2011 Apple Inc. All rights reserved.
*
* @APPLE_APACHE_LICENSE_HEADER_START@
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @APPLE_APACHE_LICENSE_HEADER_END@
*/
//
// EndianPortable.c
//
// Copyright 2011 Apple Inc. All rights reserved.
//
#include "config.h"
#include "EndianPortable.h"
#define BSWAP16(x) (((x << 8) | ((x >> 8) & 0x00ff)))
#define BSWAP32(x) (((x << 24) | ((x << 8) & 0x00ff0000) | ((x >> 8) & 0x0000ff00) | ((x >> 24) & 0x000000ff)))
#define BSWAP64(x) ((((int64_t)x << 56) | (((int64_t)x << 40) & 0x00ff000000000000LL) | \
(((int64_t)x << 24) & 0x0000ff0000000000LL) | (((int64_t)x << 8) & 0x000000ff00000000LL) | \
(((int64_t)x >> 8) & 0x00000000ff000000LL) | (((int64_t)x >> 24) & 0x0000000000ff0000LL) | \
(((int64_t)x >> 40) & 0x000000000000ff00LL) | (((int64_t)x >> 56) & 0x00000000000000ffLL)))
#ifndef WORDS_BIGENDIAN
#define TARGET_RT_LITTLE_ENDIAN 1
#endif
uint16_t Swap16NtoB(uint16_t inUInt16)
{
#if TARGET_RT_LITTLE_ENDIAN
return BSWAP16(inUInt16);
#else
return inUInt16;
#endif
}
uint16_t Swap16BtoN(uint16_t inUInt16)
{
#if TARGET_RT_LITTLE_ENDIAN
return BSWAP16(inUInt16);
#else
return inUInt16;
#endif
}
uint32_t Swap32NtoB(uint32_t inUInt32)
{
#if TARGET_RT_LITTLE_ENDIAN
return BSWAP32(inUInt32);
#else
return inUInt32;
#endif
}
uint32_t Swap32BtoN(uint32_t inUInt32)
{
#if TARGET_RT_LITTLE_ENDIAN
return BSWAP32(inUInt32);
#else
return inUInt32;
#endif
}
uint64_t Swap64BtoN(uint64_t inUInt64)
{
#if TARGET_RT_LITTLE_ENDIAN
return BSWAP64(inUInt64);
#else
return inUInt64;
#endif
}
uint64_t Swap64NtoB(uint64_t inUInt64)
{
#if TARGET_RT_LITTLE_ENDIAN
return BSWAP64(inUInt64);
#else
return inUInt64;
#endif
}
float SwapFloat32BtoN(float in)
{
#if TARGET_RT_LITTLE_ENDIAN
union {
float f;
int32_t i;
} x;
x.f = in;
x.i = BSWAP32(x.i);
return x.f;
#else
return in;
#endif
}
float SwapFloat32NtoB(float in)
{
#if TARGET_RT_LITTLE_ENDIAN
union {
float f;
int32_t i;
} x;
x.f = in;
x.i = BSWAP32(x.i);
return x.f;
#else
return in;
#endif
}
double SwapFloat64BtoN(double in)
{
#if TARGET_RT_LITTLE_ENDIAN
union {
double f;
int64_t i;
} x;
x.f = in;
x.i = BSWAP64(x.i);
return x.f;
#else
return in;
#endif
}
double SwapFloat64NtoB(double in)
{
#if TARGET_RT_LITTLE_ENDIAN
union {
double f;
int64_t i;
} x;
x.f = in;
x.i = BSWAP64(x.i);
return x.f;
#else
return in;
#endif
}
void Swap16(uint16_t * inUInt16)
{
*inUInt16 = BSWAP16(*inUInt16);
}
void Swap24(uint8_t * inUInt24)
{
uint8_t tempVal = inUInt24[0];
inUInt24[0] = inUInt24[2];
inUInt24[2] = tempVal;
}
void Swap32(uint32_t * inUInt32)
{
*inUInt32 = BSWAP32(*inUInt32);
}
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