NAME

swab − swap bytes

SYNOPSIS

swab(from, to, nbytes)
char ∗from, ∗to;

DESCRIPTION

Swab copies nbytes bytes pointed to by from to the position pointed to by to, exchanging adjacent even and odd bytes.  It is useful for carrying binary data between high-ender machines (IBM 360’s, MC68000’s, etc) and low-ender machines (PDP-11’s and VAX’es). 

Nbytes should be even. 

The from and to addresses should not overlap in portable programs. 

Sun Release 3.2  —  Last change: 20 March 1984