The result of 0.3+0.15==0.45 is true or false?

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Jiasen
Jiasen 2011-12-13
Hi, I have a problem. I ran this expression "0.3+0.15==0.45" in Matlab the result is "0", but I ran the same expression in Mathematica, the result is "True". Why is that? AND if a,b are both variables for floating-point numbers, is it acceptable if I use "a==b" as the condition in the "if function"? Could anybody help me out? Thanks a lot!

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Daniel Shub
Daniel Shub 2011-12-13
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Jan
Jan 2011-12-14
@Jiasen: It is a good idea to read the complete FAQ - why not takine advantage from the problems of others...

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