/** Return `true` if `|a - b| <= epsilon`.
 *
 *  Uses an absolute epsilon, appropriate for values near zero. For magnitudes
 *  much larger than 1, use `approxEqualRelative`. Defaults to the SDK `EPSILON`.
 */
export declare function approxEqual(a: number, b: number, epsilon?: number): boolean;
/** Return `true` if `a` and `b` agree to within a relative tolerance.
 *
 *  Uses `|a - b| <= relativeEpsilon * max(|a|, |b|)`, which scales with
 *  magnitude and is appropriate for large numbers where absolute epsilon
 *  comparisons fail. For values near zero, falls back to `EPSILON`
 *  (absolute). Defaults to `EPSILON` for `relativeEpsilon`.
 */
export declare function approxEqualRelative(a: number, b: number, relativeEpsilon?: number): boolean;
/** Return `true` if `|value| <= epsilon`. */
export declare function approxZero(value: number, epsilon?: number): boolean;
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