Moontoast\Math\BigNumberTest::testNegate PHP Метод

    public function testNegate()
    {
        $bn1 = new BigNumber(1234);
        $bn2 = new BigNumber('0.000000567', 9);
        $this->assertSame('-1234', $bn1->negate()->getValue());
        $this->assertSame('1234', $bn1->negate()->getValue());
        $bn2->setScale(7);
        $this->assertSame('-0.0000005', $bn2->negate()->getValue());
        $bn2->setScale(6);
        $this->assertSame('0.000000', $bn2->negate()->getValue());
    }