import { Numeric, Signum, OutputMode } from './00_Declarations';
export declare class Frac implements Numeric {
    readonly num: number;
    readonly den: number;
    private sig;
    outMode: OutputMode;
    constructor(num?: number, den?: number, sig?: Signum, outMode?: OutputMode);
    equals(_other: Numeric): boolean;
    add(_other: Numeric): Frac;
    sub(_other: Numeric): Frac;
    negate(): Frac;
    mul(_other: Numeric): Frac;
    sign(): Signum;
    inv(): Frac;
    div(_other: Numeric): Frac;
    abs(): Frac;
    isZero(): boolean;
    toTeX(): string;
}