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SWAB

Section: Linux Programmer's Manual (3)
Updated: 2015-03-02
Index Return to Main Contents
 

NAME

swab - swap adjacent bytes  

SYNOPSIS

#define _XOPEN_SOURCE       /* See feature_test_macros(7) */
#include <unistd.h>

void swab(const void *from, void *to, ssize_t n);
 

DESCRIPTION

The swab() function copies n bytes from the array pointed to by from to the array pointed to by to, exchanging adjacent even and odd bytes. This function is used to exchange data between machines that have different low/high byte ordering.

This function does nothing when n is negative. When n is positive and odd, it handles n-1 bytes as above, and does something unspecified with the last byte. (In other words, n should be even.)  

RETURN VALUE

The swab() function returns no value.  

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).
InterfaceAttributeValue
swab() Thread safetyMT-Safe
 

CONFORMING TO

SVr4, 4.3BSD, POSIX.1-2001.  

SEE ALSO

bstring(3)  

COLOPHON

This page is part of release 3.81 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at http://www.kernel.org/doc/man-pages/.


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ATTRIBUTES
CONFORMING TO
SEE ALSO
COLOPHON


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