import { AbstractDecimal } from './AbstractDecimal';
import { RoundingMode } from '../RoundingMode';
/**
 * Round the given decimal number, optionally specifying the rounding mode to
 * use.
 *
 * @param a
 *   number to round
 * @param roundingMode
 *   the rounding mode to use, or HalfUp if not specified
 */
export declare function round<D extends AbstractDecimal<any>>(a: D, roundingMode?: RoundingMode): D;
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