/**
* A fast method to retrieve one row of data from the matrix as a BitArray.
*
* @param integer $y
* @param BitArray $row
* @return BitArray
*/
public function getRow($y, BitArray $row = null)
{
if ($row === null || $row->getSize() < $this->width) {
$row = new BitArray($this->width);
}
$offset = $y * $this->rowSize;
for ($x = 0; $x < $this->rowSize; $x++) {
$row->setBulk($x << 5, $this->bits[$offset + $x]);
}
return $row;
}
public function testSetBulk()
{
$array = new BitArray(64);
$array->setBulk(32, 0xffff0000);
for ($i = 0; $i < 48; $i++) {
$this->assertFalse($array->get($i));
}
for ($i = 48; $i < 64; $i++) {
$this->assertTrue($array->get($i));
}
}