// -*- mode: c++ -*-

// Copyright 2010 Google LLC
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// Original author: Jim Blandy <jim@mozilla.com> <jimb@red-bean.com>

// byteswap.h: Overloaded functions for conveniently byteswapping values.

#ifndef COMMON_MAC_BYTESWAP_H_
#define COMMON_MAC_BYTESWAP_H_

#ifdef __APPLE__
#include <libkern/OSByteOrder.h>

static inline uint16_t ByteSwap(uint16_t v) { return OSSwapInt16(v); }
static inline uint32_t ByteSwap(uint32_t v) { return OSSwapInt32(v); }
static inline uint64_t ByteSwap(uint64_t v) { return OSSwapInt64(v); }
static inline int16_t  ByteSwap(int16_t  v) { return OSSwapInt16(v); }
static inline int32_t  ByteSwap(int32_t  v) { return OSSwapInt32(v); }
static inline int64_t  ByteSwap(int64_t  v) { return OSSwapInt64(v); }

#elif defined(__linux__)
// For NXByteOrder
#include <architecture/byte_order.h>
#include <stdint.h>
#include <endian.h>
#include_next <byteswap.h>

static inline uint16_t ByteSwap(uint16_t v) { return bswap_16(v); }
static inline uint32_t ByteSwap(uint32_t v) { return bswap_32(v); }
static inline uint64_t ByteSwap(uint64_t v) { return bswap_64(v); }
static inline int16_t  ByteSwap(int16_t  v) { return bswap_16(v); }
static inline int32_t  ByteSwap(int32_t  v) { return bswap_32(v); }
static inline int64_t  ByteSwap(int64_t  v) { return bswap_64(v); }

static inline NXByteOrder NXHostByteOrder() {
#ifdef __LITTLE_ENDIAN
  return NX_LittleEndian;
#else
  return NX_BigEndian;
#endif
}

#endif  // __APPLE__

#endif  // COMMON_MAC_BYTESWAP_H_