1.计算
5.75→01000000101110000000000000000000
转为二进制为101.11
小数点移位为1.0111*2^2
即S为0,E为129→10000001,M为01110000000000000000000
161.875→01000011001000011110000000000000
转为二进制为10100001.111
小数点移位为1.0100001111*2^7
即S为0,E为134→10000110,M为01000011110000000000000
-0.0234375→1111100110000000000000000000000
转为二进制为-0.0000011
小数点移位为-1.1*2^(-6)
即S为1,E为121→1111001,M为10000000000000000000000
2.