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Command: swab | Section: 3 | Source: OpenBSD | File: swab.3
SWAB(3) FreeBSD Library Functions Manual SWAB(3)
NAME
swab - swap adjacent bytes
SYNOPSIS
#include <unistd.h>
void
swab(const void *restrict src, void *restrict dst, ssize_t len);
DESCRIPTION
The swab() function copies len bytes from the location referenced by src
to the location referenced by dst, swapping adjacent bytes.
If len is zero or less, swab() does nothing. If it is odd, what happens
to the last byte is unspecified. If src and dst overlap, behaviour is
undefined.
SEE ALSO
bzero(3), memset(3)
STANDARDS
The swab() function is compliant with the X/Open System Interfaces option
of the IEEE Std 1003.1-2008 ("POSIX.1") specification.
HISTORY
The swab() function first appeared in Version 7 AT&T UNIX.
FreeBSD 14.1-RELEASE-p8 September 28, 2022 FreeBSD 14.1-RELEASE-p8