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