hphp/util/htonll.h

   1 /*
   2    +----------------------------------------------------------------------+
   3    | HipHop for PHP                                                       |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 2010-present Facebook, Inc. (http://www.facebook.com)  |
   6    +----------------------------------------------------------------------+
   7    | This source file is subject to version 3.01 of the PHP license,      |
   8    | that is bundled with this package in the file LICENSE, and is        |
   9    | available through the world-wide-web at the following url:           |
  10    | http://www.php.net/license/3_01.txt                                  |
  11    | If you did not receive a copy of the PHP license and are unable to   |
  12    | obtain it through the world-wide-web, please send a note to          |
  13    | license@php.net so we can mail you a copy immediately.               |
  14    +----------------------------------------------------------------------+
  15 */
  16
  17 #pragma once
  18
  19 /*
  20  * Tries to find a suitable implementation of htonll/ntohll if it doesn't
  21  * already exist. This could go into portability.h, but seemed specific enough
  22  * to be worth pulling out.
  23  */
  24
  25 #include <folly/portability/Sockets.h>
  26 #if defined(__FreeBSD__)
  27 # include <sys/endian.h>
  28 #elif defined(__APPLE__)
  29 # include <machine/endian.h>
  30 # include <libkern/OSByteOrder.h>
  31 #elif defined(_MSC_VER)
  32 # include <stdlib.h>
  33 #else
  34 # include <byteswap.h>
  35 #endif
  36
  37 #if __BYTE_ORDER == __LITTLE_ENDIAN
  38 # define htolell(x) (x)
  39 # define letohll(x) (x)
  40 # if !defined(htonll) && !defined(ntohll)
  41 #  if defined(__FreeBSD__)
  42 #   define htonll(x) bswap64(x)
  43 #   define ntohll(x) bswap64(x)
  44 #  elif defined(__APPLE__)
  45 #   define htonll(x) OSSwapInt64(x)
  46 #   define ntohll(x) OSSwapInt64(x)
  47 #  elif defined(_MSC_VER)
  48 #   define htonll(x) _byteswap_uint64(x)
  49 #   define ntohll(x) _byteswap_uint64(x)
  50 #  else
  51 #   define htonll(x) bswap_64(x)
  52 #   define ntohll(x) bswap_64(x)
  53 #  endif
  54 # endif
  55 #else
  56 # if defined(__FreeBSD__)
  57 #  define htolell(x) bswap64(x)
  58 #  define letohll(x) bswap64(x)
  59 # elif defined(__APPLE__)
  60 #  define htolell(x) OSSwapInt64(x)
  61 #  define letohll(x) OSSwapInt64(x)
  62 # elif defined(_MSC_VER)
  63 #  define htolell(x) _byteswap_uint64(x)
  64 #  define letohll(x) _byteswap_uint64(x)
  65 # else
  66 #  define htolell(x) bswap_64(x)
  67 #  define letohll(x) bswap_64(x)
  68 # endif
  69 # if !defined(htonll) && !defined(ntohll)
  70 #  define htonll(x) (x)
  71 #  define ntohll(x) (x)
  72 # endif
  73 #endif
  74