下列是关于浮点数的说法：  

①浮点数编码方式不但扩大了数值的表示范围，而且也增加了数据表示的数量。  

②IEEE754是关于浮点数定义和规格化的工业标准，制定这一标准的目的是提高浮点数的运算速度和精度。  

③IEEE754标准中求移码的偏移量跟求普通移码所采用的偏移量相差1。  

④在完整的最终的编码中，若阶码总编码位数为R(包括阶码符号位)，尾数总编码位数为w(包括符号位)，那么IEEE754标准下的规格化浮点数的最大负数为。  

其中，正确的说法有(35)。

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