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.TH SWAB 3C "Nov 1, 2003"
.SH NAME
swab \- swap bytes
.SH SYNOPSIS
.LP
.nf
#include <stdlib.h>

\fBvoid\fR \fBswab\fR(\fBconst char *\fR\fIsrc\fR, \fBchar *\fR\fIdest\fR, \fBssize_t\fR \fInbytes\fR);
.fi

.SS "XPG4, SUS, SUSv2, SUSv3"
.LP
.nf
#include <unistd.h>

\fBvoid\fR \fBswab\fR(\fBconst void *restrict\fR \fIsrc\fR, \fBvoid *restrict\fR \fIdest\fR, \fBssize_t\fR \fInbytes\fR);
.fi

.SH DESCRIPTION
.sp
.LP
The \fBswab()\fR function copies \fInbytes\fR bytes, which are pointed to by
\fIsrc\fR, to the object pointed to by \fIdest\fR, exchanging adjacent bytes.
The \fInbytes\fR argument should be even. If \fInbytes\fR is odd \fBswab()\fR
copies and exchanges \fInbytes\fR\(mi1 bytes and the disposition of the last
byte is unspecified. If copying takes place between objects that overlap, the
behavior is undefined. If \fInbytes\fR is negative, \fBswab()\fR does nothing.
.SH ERRORS
.sp
.LP
No errors are defined.
.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(7) for descriptions of the following attributes:
.sp

.sp
.TS
box;
c | c
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE
_
Interface Stability	Standard
_
MT-Level	MT-Safe
.TE

.SH SEE ALSO
.sp
.LP
.BR attributes (7),
.BR standards (7)