export declare function dec2bin(dec: number): string;
export declare function bin2dec(bin: string): number;
export declare function dec2uint8array(n: number): Uint8Array;
export declare function uint8array2dec(bitmap: Uint8Array): number;
export declare function setBit(n: number, idx: number): number;
export declare function isSetBit(n: number, idx: number): boolean;