/**
 * Returns `true` if the number is negative (using `Math.sign`).
 *
 * @example
 * ```typescript
 * 1.95.isNegative(); // => false
 * -1.95.isNegative(); // => true
 * NaN.isNegative(); // => false
 * Infinity.isNegative(); // => false
 * -Infinity.isNegative(); // => true
 *  ```
 *
 * @see {@link Math.sign}
 */
declare const isNegative: (n: number) => boolean;
export default isNegative;
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