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endian_helper.h
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/*
From https://gist.github.com/panzi/6856583
// "License": Public Domain
// I, Mathias Panzenböck, place this file hereby into the public domain. Use it at your own risk for whatever you like.
// In case there are jurisdictions that don't support putting things in the public domain you can also consider it to
// be "dual licensed" under the BSD, MIT and Apache licenses, if you want to. This code is trivial anyway. Consider it
// an example on how to get the endian conversion functions on different platforms.
*/
/* Mac OS */
#if defined(EXTUNIX_USE_OSBYTEORDER_H)
# define htobe16(x) OSSwapHostToBigInt16(x)
# define htole16(x) OSSwapHostToLittleInt16(x)
# define be16toh(x) OSSwapBigToHostInt16(x)
# define le16toh(x) OSSwapLittleToHostInt16(x)
# define htobe32(x) OSSwapHostToBigInt32(x)
# define htole32(x) OSSwapHostToLittleInt32(x)
# define be32toh(x) OSSwapBigToHostInt32(x)
# define le32toh(x) OSSwapLittleToHostInt32(x)
# define htobe64(x) OSSwapHostToBigInt64(x)
# define htole64(x) OSSwapHostToLittleInt64(x)
# define be64toh(x) OSSwapBigToHostInt64(x)
# define le64toh(x) OSSwapLittleToHostInt64(x)
#endif
/* Windows */
#if defined(EXTUNIX_USE_WINSOCK2_H)
# if BYTE_ORDER == LITTLE_ENDIAN
# define htobe16(x) htons(x)
# define htole16(x) (x)
# define be16toh(x) ntohs(x)
# define le16toh(x) (x)
# define htobe32(x) htonl(x)
# define htole32(x) (x)
# define be32toh(x) ntohl(x)
# define le32toh(x) (x)
# if defined(__MINGW32__)
# define htobe64(x) __builtin_bswap64(x)
# define be64toh(x) __builtin_bswap64(x)
# else
# define htobe64(x) htonll(x)
# define be64toh(x) ntohll(x)
# endif
# define htole64(x) (x)
# define le64toh(x) (x)
# elif BYTE_ORDER == BIG_ENDIAN
/* that would be xbox 360 */
# define htobe16(x) (x)
# define htole16(x) __builtin_bswap16(x)
# define be16toh(x) (x)
# define le16toh(x) __builtin_bswap16(x)
# define htobe32(x) (x)
# define htole32(x) __builtin_bswap32(x)
# define be32toh(x) (x)
# define le32toh(x) __builtin_bswap32(x)
# define htobe64(x) (x)
# define htole64(x) __builtin_bswap64(x)
# define be64toh(x) (x)
# define le64toh(x) __builtin_bswap64(x)
# else
# error byte order not supported
# endif
#endif
/* various BSD */
#ifndef be16toh
# define be16toh(x) betoh16(x)
#endif
#ifndef le16toh
# define le16toh(x) letoh16(x)
#endif
#ifndef be32toh
# define be32toh(x) betoh32(x)
#endif
#ifndef le32toh
# define le32toh(x) letoh32(x)
#endif
#ifndef be64toh
# define be64toh(x) betoh64(x)
#endif
#ifndef le64toh
# define le64toh(x) letoh64(x)
#endif