/// <reference types="bn.js" />
import { BigNumberish } from './number';
export interface Uint256 {
    low: BigNumberish;
    high: BigNumberish;
}
export declare function uint256ToBN(uint256: Uint256): import("bn.js");
export declare const UINT_128_MAX: import("bn.js");
export declare const UINT_256_MAX: import("bn.js");
export declare function isUint256(bn: BigNumberish): boolean;
export declare function bnToUint256(bignumber: BigNumberish): Uint256;