NAME

swab − swap bytes

SYNOPSIS

#include <stdlib.h>

void swab (const char ∗from, char ∗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. 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. 

  —  C Development Set