ParagonIE_Sodium_Core_Curve25519::ge_tobytes( ParagonIE_Sodium_Core_Curve25519_Ge_P2 $h ): string

1736    public static function ge_tobytes(ParagonIE_Sodium_Core_Curve25519_Ge_P2 $h)1737    {1738        $recip = self::fe_invert($h->Z);1739        $x = self::fe_mul($h->X, $recip);1740        $y = self::fe_mul($h->Y, $recip);1741        $s = self::fe_tobytes($y);1742        $s[31] = self::intToChr(1743            self::chrToInt($s[31]) ^ (self::fe_isnegative($x) << 7)1744        );1745        return $s;1746    }