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SWAB

Linux Programmer's Manual (3)
2014-02-25
 

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

 

Multithreading (see pthreads(7))

The swab() function is thread-safe.  

CONFORMING TO

SVr4, 4.3BSD, POSIX.1-2001.  

SEE ALSO

bstring(3)  

COLOPHON

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Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ATTRIBUTES
Multithreading (see pthreads(7))
CONFORMING TO
SEE ALSO
COLOPHON

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Time: 21:43:03 GMT, July 12, 2014