public function setBoost($boost)
	{
		$boost = (float) $boost;

		if ($boost > 0.0)
		{
			$this->_documentBoost = $boost;
		}
		else
		{
			$this->_documentBoost = false;
		}
	}
public function setBoost($boost)
	{
		$boost = (float) $boost;

		if ($boost > 0.0)
		{
			$this->_documentBoost = $boost;
		}
		else
		{
			$this->_documentBoost = false;
		}
	}
public function setBoost ( $ boost ) { $ boost = ( float ) $ boost ; if ( $ boost > 0.0 ) { $ this -> _documentBoost = $ boost ; } else { $ this -> _documentBoost = false ; } }
Set document boost factor

@param mixed $boost Use false for default boost, else cast to float that should be > 0 or will be treated as false
Set document boost factor