.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
.\"
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Permission is granted to copy and distribute modified versions of this
.\" manual under the conditions for verbatim copying, provided that the
.\" entire resulting derived work is distributed under the terms of a
.\" permission notice identical to this one
.\" 
.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date.  The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
.\" the use of the information contained herein.  The author(s) may not
.\" have taken the same level of care in the production of this manual,
.\" which is licensed free of charge, as they might when working
.\" professionally.
.\" 
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.\" References consulted:
.\"     Linux libc source code
.\"     Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
.\"     386BSD man pages
.\" Modified Sat Jul 24 17:52:15 1993 by Rik Faith (faith@cs.unc.edu)
.\" Modified 2001-12-15, aeb
.\" Translated into Spanish Wed Mar 11 17:32:47 CET 1998 by Gerardo
.\" Aburruzaga García <gerardo.aburruzaga@uca.es>
.\" Traducción revisada por Miguel Pérez Ibars <mpi79470@alu.um.es> el 21-enero-2005
.\"
.TH SWAB 3  "15 diciembre 2001" "GNU" "Manual del Programador de Linux"
.SH NOMBRE
swab \- intercambia bytes adyacentes
.SH SINOPSIS
.nf
.B #include <unistd.h>
.sp
.BI "void swab(const void *" from ", void *" to ", ssize_t " n );
.fi
.SH DESCRIPCIÓN
La función \fBswab()\fP copia \fIn\fP bytes desde el vector apuntado por
\fIdesde\fP hacia el vector apuntado por \fIhacia\fP, cambiando los
bytes adyacentes pares y nones. Esta función se emplea para
intercambiar datos entre máquinas que tienen diferentes ordenaciones
de bytes bajos/altos.
.LP
Esta función no hace nada cuando \fIn\fP es negativo.
Cuando \fIn\fP es positivo e impar, la función trata \fIn\fP-1 bytes
como arriba, y hace algo indefinido con el último byte.
(En otras palabras, \fIn\fP debería ser par.)
.SH "VALOR DEVUELTO"
La función \fBswab()\fP no devuelve nada.
.SH "CONFORME A"
SVID 3, BSD 4.3, POSIX 1003.1-2001
.SH "VÉASE TAMBIÉN"
.BR bstring (3)