TYPEMAP
Bit_T             Bit_T
INTEGER_ARRAY_REF  INTEGER_ARRAY_REF

INPUT
Bit_T
	if (!SvROK($arg) || !sv_isobject($arg) || !sv_derived_from($arg, "Bit::Set"))
		croak("expected a Bit::Set object");
	{
		IV tmp = SvIV((SV*)SvRV($arg));
		$var = INT2PTR($type, tmp);
	}

INTEGER_ARRAY_REF
	if (!SvOK($arg) || !SvROK($arg))
		croak(UNDEF_NON_REF_ARRAY_ERROR);
	if (SvTYPE(SvRV($arg)) != SVt_PVAV)
		croak("indices should be an array reference");
	$var = $arg;


