export type TMixed = number | null;
/**
 * - check if the parameter is an array of numbers or null values
 * @param {number[]} arr - array to be checked
 * @param {string} parameName - name of the parameter
 */
export declare function checkArrayOfNumbers(arr: number[], parameName: string): void;
/**
 * - check if the parameter is a number between min and max
 * @param {number} num - number to be checked
 * @param {number} min - minimum value
 * @param {number} max - maximum value
 * @param {string} parameName - name of the parameter
 * @param {string} maxName - name of the array
 */
export declare function checkNumber(num: number, min: number, max: TMixed[] | number, parameName: string, maxName: string): void;
/**
 * - Sum of n-period moving averages (SUM)
 * @param {TMixed[]} arr - closing prices of the stock
 * @param {number} n - number of periods to calculate the SUM, must be greater than 1 and less than the length of the CLOSE array
 */
export declare function funMS(arr: TMixed[], n: number): TMixed[];
/**
 * - Moving Average (MA)
 * @param {TMixed[]} arr - - closing prices of the stock
 * @param {number} n - - number of periods to calculate the moving average, must be between 2 and the length of the CLOSE array
 * @returns { TMixed[] } } - array of moving average values
 */
export declare function funMA(arr: TMixed[], n: number): TMixed[];
/**
 * SMA (Simple Moving Average)
 * @param {TMixed[]} arr - An array of the closing price of the stock
 * @param {number} n - The number of periods to calculate the SMA for. Must be between 2 and the length of the CLOSE array.
 * @param {number} m - The number of periods to calculate the SMA for. Must be between 0 and N-1.
 * @returns {{ SMA: TMixed[] }} - The SMA values for the given data and parameters
 */
export declare function funSMA(arr: TMixed[], n: number, m: number): TMixed[];
/**
 * - Exponential Moving Average (EMA)
 * @param {TMixed[]} arr - closing prices of the stock
 * @param {number} n - number of periods to calculate the EMA，must be greater than 1 and less than the length of the CLOSE array
 * @param {number} m - number of periods to calculate the initial EMA, default is 1，must be less than N
 * @returns {{ EMA: TMixed[] }} - object with the EMA values
 */
export declare function funEMA(arr: TMixed[], n: number, m?: number): TMixed[];
/**
 * WMA - Weighted Moving Average
 * @param {TMixed[]} arr should be an array of numbers or null values
 * @param {number} n should be a number between 2 and the length of the data array
 * @returns {TMixed[]} WMA values
 */
export declare function funWMA(arr: TMixed[], n: number): TMixed[];
/**
 * - Standard Deviation (STD)
 * @param {TMixed[]} arr - closing prices of the stock
 * @param {number} n - number of periods to calculate the STD, must be greater than 1 and less than the length of the CLOSE array
 * @returns { TMixed[] } - array of standard deviation values
 */
export declare function funSTD(arr: TMixed[], n: number): TMixed[];
/**
 * - Average Variance Enhanced (AVEDEV)
 * @param {TMixed[]} arr - closing prices of the stock
 * @param {number} n - number of periods to calculate the AVEDEV, must be greater than 1 and less than the length of the CLOSE array
 * @returns { TMixed[] } - array of average variance enhanced values
 */
export declare function funAVEDEV(arr: TMixed[], n: number): TMixed[];
/**
 * - subtract two arrays element by element
 * @param {TMixed[]} subtractor - array to be subtracted from
 * @param {TMixed[]} minuend - array to be subtracted
 * @returns {TMixed[]} - array of subtracted values
 */
export declare function funArrSub(subtractor: TMixed[], minuend: TMixed[]): TMixed[];
/**
 * - add two or more arrays element by element
 * @param {TMixed[]}...args - arrays to be added
 * @returns {TMixed[]} - array of added values
 */
export declare function funArrAdd(...args: TMixed[][]): TMixed[];
/**
 * - divide two arrays element by element
 * @param {TMixed[]} divisor - array to be divided
 * @param {TMixed[]} dividend - array to divide by
 * @returns {TMixed[]}- array of divided values
 */
export declare function funArrDiv(divisor: TMixed[], dividend: TMixed[]): TMixed[];
/**
 * - multiply two arrays element by element
 * @param {TMixed[]} arr1 - first array to be multiplied
 * @param {TMixed[]} arr2 - second array to be multiplied
 * @returns {TMixed[]} - array of multiplied values
 */
export declare function funArrMul(arr1: TMixed[], arr2: TMixed[]): TMixed[];
/**
 * - absolute value of an array
 * @param {TMixed[]} arr - array to be absolute value of
 * @returns {TMixed[]} - array of absolute values
 */
export declare function funArrAbs(arr: TMixed[]): TMixed[];
/**
 * - rounded to n decimal places
 * @param {number} num - number to be rounded
 * @param {number} n - number of decimal places to round to
 * @returns {number} - rounded number
 */
export declare function funRound(num: TMixed, n: number): TMixed;
/**
 * - check if a is greater than b with a given precision
 * @param {number} a - first number
 * @param {number} b - second number
 * @param {number} precision - precision to compare the numbers
 * @returns {boolean} - true if a is greater than b, false otherwise
 */
export declare function aGtB(a: number, b: number, precision?: number): boolean;
/**
 * - check if a is less than b with a given precision
 * @param {number} a - first number
 * @param {number} b - second number
 * @param {number} precision - precision to compare the numbers
 * @returns {boolean} - true if a is less than b, false otherwise
 */
export declare function aLtB(a: number, b: number, precision?: number): boolean;
/**
 * - check if a is equal to b with a given precision
 * @param {number} a - first number
 * @param {number} b - second number
 * @param {number} precision - precision to compare the numbers
 * @returns {boolean} - true if a is equal to b, false otherwise
 */
export declare function aEqB(a: number, b: number, precision?: number): boolean;
/**
 * - check if a is not equal to b with a given precision
 * @param {number} a - first number
 * @param {number} b - second number
 * @param {number} precision - precision to compare the numbers
 * @returns {boolean} - true if a is not equal to b, false otherwise
 */
export declare function aNeqB(a: number, b: number, precision?: number): boolean;