NAME

swab − swap bytes

SYNOPSIS

void swab (from, to, nbytes)
char ∗from, ∗to;
int 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 PDP-11s and other 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. 

Version 2.1  —  January 02, 1985