public function testDiv()
{
$a = 1234;
$b = '1234123412341234123412341234123412412341234213412421341342342';
$c = '0x1234123412341234123412341234123412412341234213412421341342342';
$d = 256;
$math = new BcEngine();
$this->assertEquals('4', $math->div($a, $d));
$this->assertEquals('4820794579457945794579457945794579735707946146142270864618', $math->div($b, $d));
$this->assertEquals('1', $math->div($c, $c));
$this->assertEquals('7852204281936437567576644496702144163191560620375095076137729968387107', $math->div($c, $d));
$this->assertEquals(1, $math->div(1, 1));
}