swab(3)swab(3)NAMEswab - Swap bytes
SYNOPSIS
#include <unistd.h>
void swab(
const void *src,
void *dest,
ssize_t nbytes );
The following definition of the swab() function does not conform to
current standards and is supported only for System V compatibility:
void swab(
const char *from,
char *to,
int nbytes );
LIBRARY
Standard C Library (libc)
STANDARDS
Interfaces documented on this reference page conform to industry stan‐
dards as follows:
swab(): XPG4, XPG4-UNIX
Refer to the standards(5) reference page for more information about
industry standards and associated tags.
PARAMETERS
Points to the location of the string to copy. Points to the location
to which the resulting string is copied. Specifies the number of bytes
to be copied. The nbytes parameter should have an even value. When the
nbytes parameter is odd, the swab() function uses nbytes-1 instead. For
the System V version of the swab() function, nbytes must also be non-
negative. If nbytes is negative, nothing is done.
DESCRIPTION
The swab() function copies the number of bytes specified by the nbytes
parameter from the location pointed to by the src parameter to the
array pointed to by the dest parameter, exchanging adjacent bytes. If
copying takes place between objects that overlap, the behavior is unde‐
fined.
SEE ALSO
Standards: standards(5)swab(3)
