Litipk\BigNumbers\DecimalConstants::silverRatio PHP Method

    public static function silverRatio()
    {
        if (self::$SilverRatio === null) {
            self::$SilverRatio = Decimal::fromString("2.41421356237309504880168872420970");
        }
        return self::$SilverRatio;
    }

 public function testFiniteAbs()
 {
     $this->assertTrue(DecimalConstants::pi()->equals(Decimal::fromString("3.14159265358979323846264338327950")));
     $this->assertTrue(DecimalConstants::eulerMascheroni()->equals(Decimal::fromString("0.57721566490153286060651209008240")));
     $this->assertTrue(DecimalConstants::goldenRatio()->equals(Decimal::fromString("1.61803398874989484820458683436564")));
     $this->assertTrue(DecimalConstants::silverRatio()->equals(Decimal::fromString("2.41421356237309504880168872420970")));
     $this->assertTrue(DecimalConstants::lightSpeed()->equals(Decimal::fromInteger(299792458)));
 }