1// "License": Public Domain 2// I, Mathias Panzenböck, place this file hereby into the public domain. Use it at your own risk for whatever you like. 3// In case there are jurisdictions that don't support putting things in the public domain you can also consider it to 4// be "dual licensed" under the BSD, MIT and Apache licenses, if you want to. This code is trivial anyway. Consider it 5// an example on how to get the endian conversion functions on different platforms. 6 7#ifndef PORTABLE_ENDIAN_H__ 8#define PORTABLE_ENDIAN_H__ 9 10#if (defined(_WIN16) || defined(_WIN32) || defined(_WIN64)) && !defined(__WINDOWS__) 11 12# define __WINDOWS__ 13 14#endif 15 16#if defined(__linux__) || defined(__CYGWIN__) 17 18# include <endian.h> 19 20#elif defined(__APPLE__) 21 22# include <libkern/OSByteOrder.h> 23 24# define htobe16(x) OSSwapHostToBigInt16(x) 25# define htole16(x) OSSwapHostToLittleInt16(x) 26# define be16toh(x) OSSwapBigToHostInt16(x) 27# define le16toh(x) OSSwapLittleToHostInt16(x) 28 29# define htobe32(x) OSSwapHostToBigInt32(x) 30# define htole32(x) OSSwapHostToLittleInt32(x) 31# define be32toh(x) OSSwapBigToHostInt32(x) 32# define le32toh(x) OSSwapLittleToHostInt32(x) 33 34# define htobe64(x) OSSwapHostToBigInt64(x) 35# define htole64(x) OSSwapHostToLittleInt64(x) 36# define be64toh(x) OSSwapBigToHostInt64(x) 37# define le64toh(x) OSSwapLittleToHostInt64(x) 38 39# define __BYTE_ORDER BYTE_ORDER 40# define __BIG_ENDIAN BIG_ENDIAN 41# define __LITTLE_ENDIAN LITTLE_ENDIAN 42# define __PDP_ENDIAN PDP_ENDIAN 43 44#elif defined(__OpenBSD__) 45 46# include <sys/endian.h> 47 48#elif defined(__NetBSD__) || defined(__FreeBSD__) || defined(__DragonFly__) 49 50# include <sys/endian.h> 51 52# define be16toh(x) betoh16(x) 53# define le16toh(x) letoh16(x) 54 55# define be32toh(x) betoh32(x) 56# define le32toh(x) letoh32(x) 57 58# define be64toh(x) betoh64(x) 59# define le64toh(x) letoh64(x) 60 61#elif defined(__WINDOWS__) 62 63# include <winsock2.h> 64# include <sys/param.h> 65 66# if BYTE_ORDER == LITTLE_ENDIAN 67 68# define htobe16(x) htons(x) 69# define htole16(x) (x) 70# define be16toh(x) ntohs(x) 71# define le16toh(x) (x) 72 73# define htobe32(x) htonl(x) 74# define htole32(x) (x) 75# define be32toh(x) ntohl(x) 76# define le32toh(x) (x) 77 78# define htobe64(x) htonll(x) 79# define htole64(x) (x) 80# define be64toh(x) ntohll(x) 81# define le64toh(x) (x) 82 83# elif BYTE_ORDER == BIG_ENDIAN 84 85 /* that would be xbox 360 */ 86# define htobe16(x) (x) 87# define htole16(x) __builtin_bswap16(x) 88# define be16toh(x) (x) 89# define le16toh(x) __builtin_bswap16(x) 90 91# define htobe32(x) (x) 92# define htole32(x) __builtin_bswap32(x) 93# define be32toh(x) (x) 94# define le32toh(x) __builtin_bswap32(x) 95 96# define htobe64(x) (x) 97# define htole64(x) __builtin_bswap64(x) 98# define be64toh(x) (x) 99# define le64toh(x) __builtin_bswap64(x) 100 101# else 102 103# error byte order not supported 104 105# endif 106 107# define __BYTE_ORDER BYTE_ORDER 108# define __BIG_ENDIAN BIG_ENDIAN 109# define __LITTLE_ENDIAN LITTLE_ENDIAN 110# define __PDP_ENDIAN PDP_ENDIAN 111 112#else 113 114# error platform not supported 115 116#endif 117 118#endif 119