BYTEORDER(9) MidnightBSD Kernel Developer’s Manual BYTEORDER(9)

NAME

bswap16, bswap32, bswap64, be16toh, be32toh, be64toh, htobe16, htobe32, htobe64, htole16, htole32, htole64, le16toh, le32toh, le64toh, be16enc, be16dec, be32enc, be32dec, be64enc, be64dec, le16enc, le16dec, le32enc, le32dec, le64enc, le64dec — byte order operations

SYNOPSIS

#include <sys/endian.h>

uint16_t

bswap16(uint16_t int16);

uint32_t

bswap32(uint32_t int32);

uint64_t

bswap64(uint64_t int64);

uint16_t

be16toh(uint16_t big16);

uint32_t

be32toh(uint32_t big32);

uint64_t

be64toh(uint64_t big64);

uint16_t

htobe16(uint16_t host16);

uint32_t

htobe32(uint32_t host32);

uint64_t

htobe64(uint64_t host64);

uint16_t

htole16(uint16_t host16);

uint32_t

htole32(uint32_t host32);

uint64_t

htole64(uint64_t host64);

uint16_t

le16toh(uint16_t little16);

uint32_t

le32toh(uint32_t little32);

uint64_t

le64toh(uint64_t little64);

uint16_t

be16dec(const void *);

uint32_t

be32dec(const void *);

uint64_t

be64dec(const void *);

uint16_t

le16dec(const void *);

uint32_t

le32dec(const void *);

uint64_t

le64dec(const void *);

void

be16enc(void *, uint16_t);

void

be32enc(void *, uint32_t);

void

be64enc(void *, uint64_t);

void

le16enc(void *, uint16_t);

void

le32enc(void *, uint32_t);

void

le64enc(void *, uint64_t);

DESCRIPTION

The bswap16(), bswap32(), and bswap64() functions return a byte order swapped integer. On big endian systems, the number is converted to little endian byte order. On little endian systems, the number is converted to big endian byte order.

The be16toh(), be32toh(), and be64toh() functions return a big endian byte ordered integer converted to the system’s native byte order. The return value will be the same as the argument on big endian systems.

The le16toh(), le32toh(), and le64toh() functions return a little endian byte ordered integer converted to the system’s native byte order. The return value will be the same as the argument on little endian systems.

The htobe16(), htobe32(), and htobe64() functions return a integer in the system’s native byte order converted to big endian byte order. The return value will be the same as the argument on big endian systems.

The htole16(), htole32(), and htole64() functions return a integer in the system’s native byte order converted to little endian byte order. The return value will be the same as the argument on little endian systems.

The be16enc(), be16dec(), be32enc(), be32dec(), be64enc(), be64dec(), le16enc(), le16dec(), le32enc(), le32dec(), le64enc(), and le64dec() functions encode and decode integers to/from byte strings on any alignment in big/little endian format.

SEE ALSO

byteorder(3)

HISTORY

The hto*() and toh*() functions first appeared in FreeBSD 5.0, and were originally developed by the NetBSD project.

The encode/decode functions first appeared in FreeBSD 5.1.

MidnightBSD 0.3 April 29, 2002 MidnightBSD 0.3