reginaldojunior / winners

	 * @param	boolean				A logical value specifying whether to force the intersect to equal 0.

	 * @return	array of float

	 */

	public static function GROWTH($yValues,$xValues=array(),$newValues=array(),$const=True) {

		$yValues = PHPExcel_Calculation_Functions::flattenArray($yValues);

		$xValues = PHPExcel_Calculation_Functions::flattenArray($xValues);

		$newValues = PHPExcel_Calculation_Functions::flattenArray($newValues);

		$const	= (is_null($const))	? True :	(boolean) PHPExcel_Calculation_Functions::flattenSingleValue($const);

		$bestFitExponential = trendClass::calculate(trendClass::TREND_EXPONENTIAL,$yValues,$xValues,$const);

		if (empty($newValues)) {

			$newValues = $bestFitExponential->getXValues();

		}

		$returnArray = array();

		foreach($newValues as $xValue) {

			$returnArray[0][] = $bestFitExponential->getValueOfYForX($xValue);

		}

		return $returnArray;

	}	//	function GROWTH()

	/**

	 * @param	boolean				A logical value specifying whether to force the intersect to equal 0.

	 * @return	array of float

	 */

	public static function TREND($yValues,$xValues=array(),$newValues=array(),$const=True) {

		$yValues = PHPExcel_Calculation_Functions::flattenArray($yValues);

		$xValues = PHPExcel_Calculation_Functions::flattenArray($xValues);

		$newValues = PHPExcel_Calculation_Functions::flattenArray($newValues);

		$const	= (is_null($const))	? True :	(boolean) PHPExcel_Calculation_Functions::flattenSingleValue($const);

		$bestFitLinear = trendClass::calculate(trendClass::TREND_LINEAR,$yValues,$xValues,$const);

		if (empty($newValues)) {

			$newValues = $bestFitLinear->getXValues();

		}

		$returnArray = array();

		foreach($newValues as $xValue) {

			$returnArray[0][] = $bestFitLinear->getValueOfYForX($xValue);

		}

		return $returnArray;

	}	//	function TREND()

	/**