小数转二进制

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十进制转二进制

十进制二进制
00
0.2510
0.51
0.7511

乘二取整法

例一: 0.75的二进制是11

0.75取整
0.75 * 2 = 1.510.5
0.5 * 2 = 110

例二: 0.1的二进制是0001100110011...

0.1取整
0.1 * 2 = 0.200.2
0.2 * 2 = 0.400.4
0.4 * 2 = 0.800.8
0.8 * 2 = 1.610.6
0.6 * 2 = 1.210.2
0.2 * 2 = 0.400.4
0.4 * 2 = 0.800.8
0.8 * 2 = 1.610.6
0.6 * 2 = 1.210.2
无限循环0001100111....