BSWAP(3) Library Functions Manual BSWAP(3)

bswap16, bswap32, bswap64
byte-order swapping functions

Standard C Library (libc, -lc)

#include <sys/types.h>
#include <machine/bswap.h>

uint16_t
bswap16(uint16_t);

uint32_t
bswap32(uint32_t);

uint64_t
bswap64(uint64_t);

The bswap16(), bswap32(), and bswap64() functions return the value of their argument with the bytes inverted. They can be used to convert 16, 32 or 64 bits integers from little to big endian, or vice-versa.

byteorder(3)
March 17, 1998 NetBSD 9.2