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__) || defined(__OpenBSD__) 49 50 # include <sys/endian.h> 51 52 #elif defined(__WINDOWS__) 53 54 # include <winsock2.h> 55 # include <sys/param.h> 56 57 # if BYTE_ORDER == LITTLE_ENDIAN 58 59 # define htobe16(x) htons(x) 60 # define htole16(x) (x) 61 # define be16toh(x) ntohs(x) 62 # define le16toh(x) (x) 63 64 # define htobe32(x) htonl(x) 65 # define htole32(x) (x) 66 # define be32toh(x) ntohl(x) 67 # define le32toh(x) (x) 68 69 # ifndef htonll htonll(uint64_t n)70static inline uint64_t htonll(uint64_t n) 71 { 72 return (((uint64_t)htonl(n)) << 32) + htonl(n >> 32); 73 } 74 # endif 75 76 # ifndef ntohll 77 # define ntohll htonll 78 # endif 79 80 # define htobe64(x) htonll(x) 81 # define htole64(x) (x) 82 # define be64toh(x) ntohll(x) 83 # define le64toh(x) (x) 84 85 # elif BYTE_ORDER == BIG_ENDIAN 86 87 /* that would be xbox 360 */ 88 # define htobe16(x) (x) 89 # define htole16(x) __builtin_bswap16(x) 90 # define be16toh(x) (x) 91 # define le16toh(x) __builtin_bswap16(x) 92 93 # define htobe32(x) (x) 94 # define htole32(x) __builtin_bswap32(x) 95 # define be32toh(x) (x) 96 # define le32toh(x) __builtin_bswap32(x) 97 98 # define htobe64(x) (x) 99 # define htole64(x) __builtin_bswap64(x) 100 # define be64toh(x) (x) 101 # define le64toh(x) __builtin_bswap64(x) 102 103 # else 104 105 # error byte order not supported 106 107 # endif 108 109 # define __BYTE_ORDER BYTE_ORDER 110 # define __BIG_ENDIAN BIG_ENDIAN 111 # define __LITTLE_ENDIAN LITTLE_ENDIAN 112 # define __PDP_ENDIAN PDP_ENDIAN 113 114 #else 115 116 # error platform not supported 117 118 #endif 119 120 #endif 121