/*

 * librdkafka - Apache Kafka C library

 *

 * Copyright (c) 2012-2015 Magnus Edenhill

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *

 * 1. Redistributions of source code must retain the above copyright notice,

 *    this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright notice,

 *    this list of conditions and the following disclaimer in the documentation

 *    and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE

 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 */

#ifndef _RDENDIAN_H_

#define _RDENDIAN_H_

/**

 * Provides portable endian-swapping macros/functions.

 *

 *   be64toh()

 *   htobe64()

 *   be32toh()

 *   htobe32()

 *   be16toh()

 *   htobe16()

 *   le64toh()

 */

#ifdef __FreeBSD__

  #include <sys/endian.h>

#elif defined __GLIBC__

  #include <endian.h>

 #ifndef be64toh

   /* Support older glibc (<2.9) which lack be64toh */

  #include <byteswap.h>

  #if __BYTE_ORDER == __BIG_ENDIAN

   #define be16toh(x) (x)

   #define be32toh(x) (x)

   #define be64toh(x) (x)

   #define le64toh(x) __bswap_64 (x)

   #define le32toh(x) __bswap_32 (x)

  #else

   #define be16toh(x) __bswap_16 (x)

   #define be32toh(x) __bswap_32 (x)

   #define be64toh(x) __bswap_64 (x)

   #define le64toh(x) (x)

   #define le32toh(x) (x)

  #endif

 #endif

#elif defined __CYGWIN__

 #include <endian.h>

#elif defined __BSD__

  #include <sys/endian.h>

#elif defined sun

  #include <sys/byteorder.h>

  #include <sys/isa_defs.h>

#define __LITTLE_ENDIAN 1234

#define __BIG_ENDIAN 4321

#ifdef _BIG_ENDIAN

#define __BYTE_ORDER __BIG_ENDIAN

#define be64toh(x) (x)

#define be32toh(x) (x)

#define be16toh(x) (x)

#define le16toh(x) ((uint16_t)BSWAP_16(x))

#define le32toh(x) BSWAP_32(x)

#define le64toh(x) BSWAP_64(x)

# else

#define __BYTE_ORDER __LITTLE_ENDIAN

#define be64toh(x) BSWAP_64(x)

#define be32toh(x) ntohl(x)

#define be16toh(x) ntohs(x)

#define le16toh(x) (x)

#define le32toh(x) (x)

#define le64toh(x) (x)

#define htole16(x) (x)

#define htole64(x) (x)

#endif /* sun */

#elif defined __APPLE__

  #include <machine/endian.h>

  #include <libkern/OSByteOrder.h>

#if __DARWIN_BYTE_ORDER == __DARWIN_BIG_ENDIAN

#define be64toh(x) (x)

#define be32toh(x) (x)

#define be16toh(x) (x)

#define le16toh(x) OSSwapInt16(x)

#define le32toh(x) OSSwapInt32(x)

#define le64toh(x) OSSwapInt64(x)

#else

#define be64toh(x) OSSwapInt64(x)

#define be32toh(x) OSSwapInt32(x)

#define be16toh(x) OSSwapInt16(x)

#define le16toh(x) (x)

#define le32toh(x) (x)

#define le64toh(x) (x)

#endif

#elif defined(_MSC_VER)

#include <intrin.h>

#define be64toh(x) _byteswap_uint64(x)

#define be32toh(x) _byteswap_ulong(x)

#define be16toh(x) _byteswap_ushort(x)

#define le16toh(x) (x)

#define le32toh(x) (x)

#define le64toh(x) (x)

#elif defined _AIX      /* AIX is always big endian */

#define be64toh(x) (x)

#define be32toh(x) (x)

#define be16toh(x) (x)

#define le32toh(x)                              \

        ((((x) & 0xff) << 24) |                 \

         (((x) & 0xff00) << 8) |                \

         (((x) & 0xff0000) >> 8) |              \

         (((x) & 0xff000000) >> 24))

#else

 #include <endian.h>

#endif

/*

 * On Solaris, be64toh is a function, not a macro, so there's no need to error

 * if it's not defined.

 */

#if !defined(__sun) && !defined(be64toh)

#error Missing definition for be64toh

#endif

#ifndef be32toh

#define be32toh(x) ntohl(x)

#endif

#ifndef be16toh

#define be16toh(x) ntohs(x)

#endif

#ifndef htobe64

#define htobe64(x) be64toh(x)

#endif

#ifndef htobe32

#define htobe32(x) be32toh(x)

#endif

#ifndef htobe16

#define htobe16(x) be16toh(x)

#endif

#ifndef htole32

#define htole32(x) le32toh(x)

#endif

#endif /* _RDENDIAN_H_ */