/**
* @large
*/
public function testSingleBit()
{
$this->assertTrue(BitWise::isSingleBit(1));
$this->assertTrue(BitWise::isSingleBit("1"));
$this->assertTrue(BitWise::isSingleBit(2));
$this->assertTrue(BitWise::isSingleBit("2"));
$this->assertTrue(BitWise::isSingleBit(4));
$fails = [3, 5, 6, 7, 9, 10, 11, 13, 14, 15];
foreach ($fails as $checkBit) {
$this->assertFalse(BitWise::isSingleBit($checkBit));
}
$checkBit = 4;
for ($i = 0; $i < 10000; $i++) {
$checkBit = bcmul($checkBit, 2);
$this->assertTrue(BitWise::isSingleBit($checkBit));
$this->assertFalse(BitWise::isSingleBit(bcsub($checkBit, 3)));
}
}
/**
* Check to see if an integer is a single bit, or a combination
*
* @param int $bit Bit to check
*
* @return bool
*
* @deprecated
*/
function is_single_bit($bit)
{
return \Packaged\Helpers\BitWise::isSingleBit($bit);
}
