import type { NumberArray } from 'cheminfo-types';
export interface XPaddingOptions {
    /**
     * padding size before first element and after last element
     * @default 0
     */
    size?: number;
    /**
     * value to use for padding (if algorithm='value')
     * @default 0
     */
    value?: number;
    algorithm?: 'value' | 'duplicate' | 'circular';
}
/**
 * This function pads an array
 *s
 * @param array - the array that will be padded
 * @param options - options
 */
export declare function xPadding(array: NumberArray, options?: XPaddingOptions): Float64Array<ArrayBuffer>;
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