.TH ZEVEN 3 libzahl
.SH NAME
zeven - Check whether a big integer is even
.SH SYNOPSIS
.nf
#include <zahl.h>

int zeven(z_t \fIa\fP);
.fi
.SH DESCRIPTION
.B zeven
checks whether
.I a
is even.
.SH RETURN VALUE
.B zeven
returns 1 if
.I a
is even, and 0 otherwise.
.SH SEE ALSO
.BR zodd (3),
.BR zeven_nonzero (3),
.BR zzero (3),
.BR zsignum (3),
.BR zcmp (3)