import type { NumberArray } from 'cheminfo-types';
/**
 * This function xAdd the first array by the second array or a constant value to each element of the first array
 * @param array1 - the first array
 * @param array2 - the second array or number
 * @returns the result of the addition
 */
export declare function xAdd(array1: NumberArray, array2: NumberArray | number): Float64Array<ArrayBuffer>;
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