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<?php |
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namespace PhpOffice\PhpSpreadsheet\Calculation\MathTrig\Trig; |
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use PhpOffice\PhpSpreadsheet\Calculation\Exception; |
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use PhpOffice\PhpSpreadsheet\Calculation\Functions; |
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use PhpOffice\PhpSpreadsheet\Calculation\MathTrig\Helpers; |
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class Tangent |
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{ |
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/** |
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* TAN. |
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* |
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* Returns the result of builtin function tan after validating args. |
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* |
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* @param mixed $angle Should be numeric |
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* |
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* @return float|string tangent |
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*/ |
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public static function tan($angle) |
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{ |
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try { |
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$angle = Helpers::validateNumericNullBool($angle); |
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} catch (Exception $e) { |
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return $e->getMessage(); |
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} |
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return Helpers::verySmallDenominator(sin($angle), cos($angle)); |
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} |
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/** |
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* TANH. |
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* |
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* Returns the result of builtin function sinh after validating args. |
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* |
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* @param mixed $angle Should be numeric |
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* |
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* @return float|string hyperbolic tangent |
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*/ |
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public static function tanh($angle) |
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{ |
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try { |
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$angle = Helpers::validateNumericNullBool($angle); |
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} catch (Exception $e) { |
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return $e->getMessage(); |
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} |
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return tanh($angle); |
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} |
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/** |
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* ATAN. |
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* |
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* Returns the arctangent of a number. |
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* |
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* @param float $number Number |
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* |
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* @return float|string The arctangent of the number |
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*/ |
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public static function atan($number) |
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{ |
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try { |
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$number = Helpers::validateNumericNullBool($number); |
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} catch (Exception $e) { |
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return $e->getMessage(); |
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} |
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return Helpers::numberOrNan(atan($number)); |
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} |
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/** |
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* ATANH. |
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* |
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* Returns the inverse hyperbolic tangent of a number. |
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* |
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* @param float $number Number |
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* |
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* @return float|string The inverse hyperbolic tangent of the number |
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*/ |
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public static function atanh($number) |
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{ |
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try { |
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$number = Helpers::validateNumericNullBool($number); |
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} catch (Exception $e) { |
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return $e->getMessage(); |
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} |
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return Helpers::numberOrNan(atanh($number)); |
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} |
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/** |
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* ATAN2. |
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* |
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* This function calculates the arc tangent of the two variables x and y. It is similar to |
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* calculating the arc tangent of y ÷ x, except that the signs of both arguments are used |
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* to determine the quadrant of the result. |
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* The arctangent is the angle from the x-axis to a line containing the origin (0, 0) and a |
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* point with coordinates (xCoordinate, yCoordinate). The angle is given in radians between |
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* -pi and pi, excluding -pi. |
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* |
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* Note that the Excel ATAN2() function accepts its arguments in the reverse order to the standard |
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* PHP atan2() function, so we need to reverse them here before calling the PHP atan() function. |
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* |
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* Excel Function: |
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* ATAN2(xCoordinate,yCoordinate) |
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* |
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* @param mixed $xCoordinate should be float, the x-coordinate of the point |
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* @param mixed $yCoordinate should be float, the y-coordinate of the point |
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* |
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* @return float|string the inverse tangent of the specified x- and y-coordinates, or a string containing an error |
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*/ |
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public static function atan2($xCoordinate, $yCoordinate) |
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{ |
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try { |
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$xCoordinate = Helpers::validateNumericNullBool($xCoordinate); |
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$yCoordinate = Helpers::validateNumericNullBool($yCoordinate); |
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} catch (Exception $e) { |
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return $e->getMessage(); |
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} |
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if (($xCoordinate == 0) && ($yCoordinate == 0)) { |
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return Functions::DIV0(); |
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} |
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return atan2($yCoordinate, $xCoordinate); |
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} |
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} |
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PHPOffice /
PhpSpreadsheet
