/**
 * Computes number rounded down to precision.
 *
 * @param number The number to round down.
 * @param precision The precision to round down to.
 * @returns Returns the rounded down number.
 *
 * @example
 * floor(4.006); // => 4
 * floor(0.046, 2); // => 0.04
 * floor(4060, -2); // => 4000
 */
export declare function floor(number: number, precision?: number): number;