ParagonIE_Sodium_Core32_Int32

10class ParagonIE_Sodium_Core32_Int3211{12    /**13     * @var array<int, int> - two 16-bit integers14     *15     * 0 is the higher 16 bits16     * 1 is the lower 16 bits17     */18    public $limbs = array(0, 0);19 20    /**21     * @var int22     */23    public $overflow = 0;24 25    /**26     * @var bool27     */28    public $unsignedInt = false;29 30    /**31     * ParagonIE_Sodium_Core32_Int32 constructor.32     * @param array $array33     * @param bool $unsignedInt34     */35    public function __construct($array = array(0, 0), $unsignedInt = false)36    {37        $this->limbs = array(38            (int) $array[0],39            (int) $array[1]40        );41        $this->overflow = 0;42        $this->unsignedInt = $unsignedInt;43    }44 45    /**46     * Adds two int32 objects47     *48     * @param ParagonIE_Sodium_Core32_Int32 $addend49     * @return ParagonIE_Sodium_Core32_Int3250     */51    public function addInt32(ParagonIE_Sodium_Core32_Int32 $addend)52    {53        $i0 = $this->limbs[0];54        $i1 = $this->limbs[1];55        $j0 = $addend->limbs[0];56        $j1 = $addend->limbs[1];57 58        $r1 = $i1 + ($j1 & 0xffff);59        $carry = $r1 >> 16;60 61        $r0 = $i0 + ($j0 & 0xffff) + $carry;62        $carry = $r0 >> 16;63 64        $r0 &= 0xffff;65        $r1 &= 0xffff;66 67        $return = new ParagonIE_Sodium_Core32_Int32(68            array($r0, $r1)69        );70        $return->overflow = $carry;71        $return->unsignedInt = $this->unsignedInt;72        return $return;73    }74 75    /**76     * Adds a normal integer to an int32 object77     *78     * @param int $int79     * @return ParagonIE_Sodium_Core32_Int3280     * @throws SodiumException81     * @throws TypeError82     */83    public function addInt($int)84    {85        ParagonIE_Sodium_Core32_Util::declareScalarType($int, 'int', 1);86        /** @var int $int */87        $int = (int) $int;88 89        $int = (int) $int;