addInt64 example

/** * @var ParagonIE_Sodium_Core32_Int64[] $f * @var ParagonIE_Sodium_Core32_Int64 $q */
        $f = array();

        for ($i = 0; $i < 10; ++$i) {
            $f[$i] = $h[$i]->toInt64();
        }

        $q = $f[9]->mulInt(19, 5)->addInt(1 << 14)->shiftRight(25)
            ->addInt64($f[0])->shiftRight(26)
            ->addInt64($f[1])->shiftRight(25)
            ->addInt64($f[2])->shiftRight(26)
            ->addInt64($f[3])->shiftRight(25)
            ->addInt64($f[4])->shiftRight(26)
            ->addInt64($f[5])->shiftRight(25)
            ->addInt64($f[6])->shiftRight(26)
            ->addInt64($f[7])->shiftRight(25)
            ->addInt64($f[8])->shiftRight(26)
            ->addInt64($f[9])->shiftRight(25);

        $f[0] = $f[0]->addInt64($q->mulInt(19, 5));

        

class ParagonIE_Sodium_Core32_SipHash extends ParagonIE_Sodium_Core32_Util
{
    /** * @internal You should not use this directly from another application * * @param array<int, ParagonIE_Sodium_Core32_Int64> $v * @return array<int, ParagonIE_Sodium_Core32_Int64> */
    public static function sipRound(array $v)
    {
        # v0 += v1;         $v[0] = $v[0]->addInt64($v[1]);

        # v1 = ROTL(v1, 13);         $v[1] = $v[1]->rotateLeft(13);

        # v1 ^= v0;         $v[1] = $v[1]->xorInt64($v[0]);

        # v0=ROTL(v0,32);         $v[0] = $v[0]->rotateLeft(32);

        # v2 += v3;

    public static function fe_mul121666(ParagonIE_Sodium_Core32_Curve25519_Fe $f)
    {
        /** @var array<int, ParagonIE_Sodium_Core32_Int64> $h */
        $h = array();
        for ($i = 0; $i < 10; ++$i) {
            $h[$i] = $f[$i]->toInt64()->mulInt(121666, 17);
        }

        $carry9 = $h[9]->addInt(1 << 24)->shiftRight(25);
        $h[0] = $h[0]->addInt64($carry9->mulInt(19, 5));
        $h[9] = $h[9]->subInt64($carry9->shiftLeft(25));

        $carry1 = $h[1]->addInt(1 << 24)->shiftRight(25);
        $h[2] = $h[2]->addInt64($carry1);
        $h[1] = $h[1]->subInt64($carry1->shiftLeft(25));

        $carry3 = $h[3]->addInt(1 << 24)->shiftRight(25);
        $h[4] = $h[4]->addInt64($carry3);
        $h[3] = $h[3]->subInt64($carry3->shiftLeft(25));

        $carry5 = $h[5]->addInt(1 << 24)->shiftRight(25);
        

    protected static function add64($x, $y)
    {
        return $x->addInt64($y);
    }

    /** * @internal You should not use this directly from another application * * @param ParagonIE_Sodium_Core32_Int64 $x * @param ParagonIE_Sodium_Core32_Int64 $y * @param ParagonIE_Sodium_Core32_Int64 $z * @return ParagonIE_Sodium_Core32_Int64 */
    public static function add364($x, $y, $z)
    {

->shiftRight(6)
                    ->mask(0x3ffffff)
            )->toInt64();
            $h4 = $h4->addInt32(
                ParagonIE_Sodium_Core32_Int32::fromReverseString(self::substr($message, 12, 4))
                    ->shiftRight(8)
                    ->orInt32($hibit)
            )->toInt64();

            /* h *= r */
            $d0 = $zero
                ->addInt64($h0->mulInt64($r0, 27))
                ->addInt64($s4->mulInt64($h1, 27))
                ->addInt64($s3->mulInt64($h2, 27))
                ->addInt64($s2->mulInt64($h3, 27))
                ->addInt64($s1->mulInt64($h4, 27));

            $d1 = $zero
                ->addInt64($h0->mulInt64($r1, 27))
                ->addInt64($h1->mulInt64($r0, 27))
                ->addInt64($s4->mulInt64($h2, 27))
                ->addInt64($s3->mulInt64($h3, 27))
                ->addInt64($s2->mulInt64($h4, 27));