XS(XS_Math__UInt64__eqn); /* prototype to pass -Wmissing-prototypes */
XS(XS_Math__UInt64__eqn)
{
#ifdef dVAR
    dVAR; dXSARGS;
#else
    dXSARGS;
#endif
    if (items < 2 || items > 3)
       croak_xs_usage(cv,  "self, other, rev = NULL");
    {
	SV *	self = ST(0);
	SV *	other = ST(1);
	SV *	rev;
    uint64_t selfu64;
    uint64_t otheru64;
	SV *	RETVAL;
    selfu64 = SvU64x(self);
    otheru64 = SvU64(aTHX_ other);
    RETVAL = (selfu64  == otheru64
               ? &PL_sv_yes
               : &PL_sv_no );
	ST(0) = RETVAL;
	sv_2mortal(ST(0));
    }
    XSRETURN(1);
}