Mis match in comparing the values

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Raghavendra 2012-9-11

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https://ww2.mathworks.cn/matlabcentral/answers/47876-mis-match-in-comparing-the-values

Hello all,

a=1.3;
b=0.1+0.2+0.2+0.3+0.3+0.1+0.1;

If I perform a==b, then I am getting the result 0(means both are not equal).

But actually they are equal(Both has a value of 1.3)

What's going wrong here? Plz let me know....

Best Regards,

Raghavendra

1 个评论
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Jan 2012-9-11

Dear Raghavendra, welcome to the world of floating point numbers on computers. Equivalent questions have been discussed such frequently, that this topic have been included in the FAQ. Follow Oleg's link and study the other problems also, because they occur frequently, as the name says already.

To all readers: If you have not done this already, read the FAQ also.

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