be16enc, be16dec,

library “libbsd”

#include <sys/endian.h> (See libbsd(7) for include usage.)
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);

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.

byteorder(3)

The encode/decode functions first appeared in FreeBSD 5.1.