WpOrg\Requests

IdnaEncoder::adapt │ protected static │ WP 1.0

Adapt the bias

Method of the class: IdnaEncoder{}

No Hooks.

Returns

Int|float. New bias

function adapt(delta,numpoints,firsttime):

Usage

$result = IdnaEncoder::adapt( $delta, $numpoints, $firsttime );

$delta(int) (required)

.

$numpoints(int) (required)

.

$firsttime(true|false) (required)

.

IdnaEncoder::adapt() IdnaEncoder::adapt code ^{WP 7.0}

protected static function adapt($delta, $numpoints, $firsttime) {
	// if firsttime then let delta = delta div damp
	if ($firsttime) {
		$delta = floor($delta / self::BOOTSTRAP_DAMP);
	} else {
		// else let delta = delta div 2
		$delta = floor($delta / 2);
	}

	// let delta = delta + (delta div numpoints)
	$delta += floor($delta / $numpoints);
	// let k = 0
	$k = 0;
	// while delta > ((base - tmin) * tmax) div 2 do begin
	$max = floor(((self::BOOTSTRAP_BASE - self::BOOTSTRAP_TMIN) * self::BOOTSTRAP_TMAX) / 2);
	while ($delta > $max) {
		// let delta = delta div (base - tmin)
		$delta = floor($delta / (self::BOOTSTRAP_BASE - self::BOOTSTRAP_TMIN));
		// let k = k + base
		$k += self::BOOTSTRAP_BASE;
	} // end
	// return k + (((base - tmin + 1) * delta) div (delta + skew))
	return $k + floor(((self::BOOTSTRAP_BASE - self::BOOTSTRAP_TMIN + 1) * $delta) / ($delta + self::BOOTSTRAP_SKEW));
}