export declare function equal(a: number, b: number, tolerance: number): boolean;
export declare function unequal(a: number, b: number, tolerance: number): boolean;
export declare function zero(a: number, tolerance: number): boolean;
export declare function nonzero(a: number, tolerance: number): boolean;
export declare function between(d1: number, dj: number, d2: number, tolerance: number): boolean;
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