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<?php
namespace PhpOffice\PhpSpreadsheet\Calculation\MathTrig;
use PhpOffice\PhpSpreadsheet\Calculation\Exception;
class Sign
{
/**
* SIGN.
*
* Determines the sign of a number. Returns 1 if the number is positive, zero (0)
* if the number is 0, and -1 if the number is negative.
*
* @param float $number Number to round
*
* @return int|string sign value, or a string containing an error
*/
public static function evaluate($number)
{
try {
$number = Helpers::validateNumericNullBool($number);
} catch (Exception $e) {
return $e->getMessage();
}
return Helpers::returnSign($number);
}
}