public static function CDF($x, $μ, $σ)
{
Support::checkLimits(self::LIMITS, ['x' => $x, 'μ' => $μ, 'σ' => $σ]);
$π = \M_PI;
$⟮ln x − μ⟯ = log($x) - $μ;
$√2σ = sqrt(2) * $σ;
return 1 / 2 + 1 / 2 * Special::erf($⟮ln x − μ⟯ / $√2σ);
}