在我的节目,我有一个数组25个值0.04 当我尝试在一个循环来总结这些价值观,我得到以下结果:奇怪的浮点行为
0.0 + 0.04 = 0.04
0.04 + 0.04 = 0.08
0.08 + 0.04 = 0.12
0.12 + 0.04 = 0.16
0.16 + 0.04 = 0.2
0.2 + 0.04 = 0.24000000000000002
0.24000000000000002 + 0.04 = 0.28
0.28 + 0.04 = 0.32
0.32 + 0.04 = 0.36
0.36 + 0.04 = 0.39999999999999997
0.39999999999999997 + 0.04 = 0.43999999999999995
0.43999999999999995 + 0.04 = 0.4799999999999999
0.4799999999999999 + 0.04 = 0.5199999999999999
0.5199999999999999 + 0.04 = 0.5599999999999999
0.5599999999999999 + 0.04 = 0.6
0.6 + 0.04 = 0.64
0.64 + 0.04 = 0.68
0.68 + 0.04 = 0.7200000000000001
0.7200000000000001 + 0.04 = 0.7600000000000001
0.7600000000000001 + 0.04 = 0.8000000000000002
0.8000000000000002 + 0.04 = 0.8400000000000002
0.8400000000000002 + 0.04 = 0.8800000000000002
0.8800000000000002 + 0.04 = 0.9200000000000003
0.9200000000000003 + 0.04 = 0.9600000000000003
为什么地球上会发生吗?!
有点相关的问题:http://stackoverflow.com/questions/327020/why-are-floating-point-values-so-prolific – CesarB 2008-11-29 14:36:51