/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
 * 
 *  Libmemcached library
 *
 *  Copyright (C) 2011 Data Differential, http://datadifferential.com/
 *  Copyright (C) 2006-2009 Brian Aker All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are
 *  met:
 *
 *      * Redistributions of source code must retain the above copyright
 *  notice, this list of conditions and the following disclaimer.
 *
 *      * 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.
 *
 *      * The names of its contributors may not be used to endorse or
 *  promote products derived from this software without specific prior
 *  written permission.
 *
 *  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.
 *
 */

#include "mem_config.h"
#include "libmemcached/byteorder.h"

#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif

/* Byte swap a 64-bit number. */
#ifndef swap64
static inline uint64_t swap64(uint64_t in)
{
#ifndef WORDS_BIGENDIAN
  /* Little endian, flip the bytes around until someone makes a faster/better
   * way to do this. */
  uint64_t rv= 0;
  for (uint8_t x= 0; x < 8; ++x)
  {
    rv= (rv << 8) | (in & 0xff);
    in >>= 8;
  }
  return rv;
#else
  /* big-endian machines don't need byte swapping */
  return in;
#endif // WORDS_BIGENDIAN
}
#endif


uint64_t memcached_ntohll(uint64_t value)
{
#ifdef HAVE_HTONLL
  return ntohll(value);
#else
  return swap64(value);
#endif
}

uint64_t memcached_htonll(uint64_t value)
{
#ifdef HAVE_HTONLL
  return htonll(value);
#else
  return swap64(value);
#endif
}