Moontoast\Math\BigNumberTest::testNegativeZero PHP Method

BigNumberTest Class Documentation Datei anzeigen Open project: moontoast/math

testNegativeZero() public method

The sign of -0 is still a negative sign. This is ultimately calculated by bccomp(), according to which, when -0.000 is compared to 0.000, it will return a -1, meaning -0.000 is less than 0.000, but -0 compared to 0 will return a 0, meaning the two are equal. This is odd, but it is the expected behavior.

public testNegativeZero ( )

    public function testNegativeZero()
    {
        $bn = new BigNumber('-0.0000005', 3);
        $this->assertSame('-0.000', $bn->getValue());
        $this->assertEquals(-1, $bn->signum());
        $this->assertTrue($bn->isNegative());
    }

BigNumberTest

setUp

testAbs

testAdd

testBaseConvert

testCeil

testCompareTo

testConstruct

testConvertFromBase10

testConvertFromBase10ExceptionBaseGreaterThan36

testConvertFromBase10ExceptionBaseLessThan2

testConvertFromBase10NegativeNumbers