ParagonIE_Sodium_Core_Curve25519::ge_cmov8_cached( ParagonIE_Sodium_Core_Curve25519_Ge_Cached[] $cached, int $b ): ParagonIE_Sodium_Core_Curve25519_Ge_Cached

1594    public static function ge_cmov8_cached(array $cached, $b)1595    {1596        // const unsigned char bnegative = negative(b);1597        // const unsigned char babs      = b - (((-bnegative) & b) * ((signed char) 1 << 1));1598        $bnegative = self::negative($b);1599        $babs = $b - (((-$bnegative) & $b) << 1);1600 1601        // ge25519_cached_0(t);1602        $t = new ParagonIE_Sodium_Core_Curve25519_Ge_Cached(1603            self::fe_1(),1604            self::fe_1(),1605            self::fe_1(),1606            self::fe_0()1607        );1608 1609        // ge25519_cmov_cached(t, &cached[0], equal(babs, 1));1610        // ge25519_cmov_cached(t, &cached[1], equal(babs, 2));1611        // ge25519_cmov_cached(t, &cached[2], equal(babs, 3));1612        // ge25519_cmov_cached(t, &cached[3], equal(babs, 4));1613        // ge25519_cmov_cached(t, &cached[4], equal(babs, 5));1614        // ge25519_cmov_cached(t, &cached[5], equal(babs, 6));1615        // ge25519_cmov_cached(t, &cached[6], equal(babs, 7));1616        // ge25519_cmov_cached(t, &cached[7], equal(babs, 8));1617        for ($x = 0; $x < 8; ++$x) {1618            $t = self::ge_cmov_cached($t, $cached[$x], self::equal($babs, $x + 1));1619        }1620 1621        // fe25519_copy(minust.YplusX, t->YminusX);1622        // fe25519_copy(minust.YminusX, t->YplusX);1623        // fe25519_copy(minust.Z, t->Z);1624        // fe25519_neg(minust.T2d, t->T2d);1625        $minust = new ParagonIE_Sodium_Core_Curve25519_Ge_Cached(1626            self::fe_copy($t->YminusX),1627            self::fe_copy($t->YplusX),1628            self::fe_copy($t->Z),1629            self::fe_neg($t->T2d)1630        );1631        return self::ge_cmov_cached($t, $minust, $bnegative);1632    }