MathPHP\Probability\Distribution\Discrete\Bernoulli::CDF PHP Метод

    public static function CDF(int $k, float $p) : float
    {
        Support::checkLimits(self::LIMITS, ['p' => $p]);
        if ($k < 0) {
            return 0;
        }
        if ($k < 1) {
            return 1 - $p;
        }
        return 1;
    }