SWAB

NAME

swab - swap adjacent bytes

SYNOPSIS

#include <unistd.h>

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

DESCRIPTION

The fBswab()fP function copies fInfP bytes from the array pointed to by fIfromfP to the array pointed to by fItofP, exchanging adjacent even and odd bytes. This function is used to exchange data between machines that have different low/high byte ordering.

This function does nothing when fInfP is negative. When fInfP is positive and odd, it handles fInfP-1 bytes as above, and does something unspecified with the last byte. (In other words, fInfP should be even.)

RETURN VALUE

The fBswab()fP function returns no value.

CONFORMING TO

SVID 3, BSD 4.3, POSIX 1003.1-2001