{"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"sym::ctlz"}]}
            sym::ctlz | sym::ctlz_nonzero => u128::from(bits.leading_zeros()) - extra,
            }
            sym::cttz | sym::cttz_nonzero => u128::from((bits << extra).trailing_zeros()) - extra,