NAME¶

swab - swap adjacent bytes

SYNOPSIS¶

#define _XOPEN_SOURCE
#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.

CONFORMING TO¶

SVr4, 4.3BSD, POSIX.1-2001.

SEE ALSO¶

bstring(3), feature_test_macros(7)

COLOPHON¶

This page is part of release 3.22 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.