for testing and deploying your application
for finding and fixing issues
for empowering human code reviews
<?php
namespace PhpOffice\PhpSpreadsheet\Calculation\MathTrig\Trig;
use PhpOffice\PhpSpreadsheet\Calculation\Exception;
use PhpOffice\PhpSpreadsheet\Calculation\MathTrig\Helpers;
class Cosine
{
/**
* COS.
*
* Returns the result of builtin function cos after validating args.
* @param mixed $number Should be numeric
* @return float|string cosine
*/
public static function cos($number)
try {
$number = Helpers::validateNumericNullBool($number);
} catch (Exception $e) {
return $e->getMessage();
}
return cos($number);
* COSH.
* Returns the result of builtin function cosh after validating args.
* @return float|string hyperbolic cosine
public static function cosh($number)
return cosh($number);
* ACOS.
* Returns the arccosine of a number.
* @param float $number Number
* @return float|string The arccosine of the number
public static function acos($number)
return Helpers::numberOrNan(acos($number));
* ACOSH.
* Returns the arc inverse hyperbolic cosine of a number.
* @return float|string The inverse hyperbolic cosine of the number, or an error string
public static function acosh($number)
return Helpers::numberOrNan(acosh($number));