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<?php
namespace Phperf\Pipeline\Vector;
class MovingAverage implements VectorProcessor
{
private $size;
private $values = [];
public function __construct($size)
$this->size = $size;
}
/**
* @param $value
* @return int
* @todo optimize for fixed size array
*/
public function value($value)
$result = $value;
$cnt = 1;
foreach ($this->values as $prev) {
$result += $prev;
++$cnt;
if ($cnt > 1) {
$result /= $cnt;
if (count($this->values) >= $this->size) {
array_shift($this->values);
$this->values[] = $value;
return $result;
phperf /
pipeline
