.TH ZSWAP 3 libzahl
.SH NAME
zswap - Exchanges the value of two big integers
.SH SYNOPSIS
.nf
#include <zahl.h>

void zswap(z_t \fIa\fP, z_t \fIb\fP);
.fi
.SH DESCRIPTION
.B zswap
exchanges all information stored in
.I a
with the information stored in
.IR b .
.P
It is safe to call
.B zswap
with
.IR "(a==b)" .
.SH SEE ALSO
.BR zset (3)