NAME

swab() − swap bytes

SYNOPSIS

#include <unistd.h>

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

DESCRIPTION

swab() copies nbytes bytes pointed to by from to the array pointed to by to, exchanging adjacent even and odd bytes. It is useful for carrying binary data between byte-swapped and non-byte-swapped machines. nbytes should be even and non-negative.  If nbytes is odd and positive swab() uses nbytes−1 instead. If nbytes is negative, swab() does nothing. 

STANDARDS CONFORMANCE

swab(): AES, SVID2, XPG2, XPG3, XPG4

Hewlett-Packard Company  —  HP-UX Release 9.0: August 1992