public function __construct( ParagonIE_Sodium_Core_Curve25519_Fe
$YplusX = null,
ParagonIE_Sodium_Core_Curve25519_Fe
$YminusX = null,
ParagonIE_Sodium_Core_Curve25519_Fe
$Z = null,
ParagonIE_Sodium_Core_Curve25519_Fe
$T2d = null
) { if ($YplusX === null
) { $YplusX =
new ParagonIE_Sodium_Core_Curve25519_Fe();
} $this->YplusX =
$YplusX;
if ($YminusX === null
) { $YminusX =
new ParagonIE_Sodium_Core_Curve25519_Fe();
} $this->YminusX =
$YminusX;
if ($Z === null
) { $Z =
new ParagonIE_Sodium_Core_Curve25519_Fe();
} $this->Z =
$Z;
if ($T2d === null
) {