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CLA中浮点运算的问题



为什么在CLA浮点运算时,2的值为0x40000000,4代表的是0x40800000,0.5代表的是0x3f000000,在进行浮点运算的时候他的数值范围是多少呢?(2的16次方?)小数点的有效位是多少?