difference between .01 and 0.01 in matlab?
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Hi!
pls whats the difference between .01 and 0.01 in matlab?
thanks
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回答(4 个)
John D'Errico
2012-5-11
Um, zero. As far as MATLAB is concerned, the two are identical. To prove that, I'll do this:
>> hex = sprintf('%bx',0.01)
hex =
3f847ae147ae147b
>> hex = sprintf('%bx',.01)
hex =
3f847ae147ae147b
So the two numbers in hex form are identical. Or look at them using HPF.
DefaultNumberOfDigits 60
hpf(0.01)
ans =
0.0100000000000000002081668171172168513294309377670288085937500
hpf(.01)
ans =
0.0100000000000000002081668171172168513294309377670288085937500
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Image Analyst
2012-5-11
Just a leading zero but essentially they are the same - subtracting them will give a perfect zero (I tried/verified). Perhaps you're thinking of this: http://matlab.wikia.com/wiki/FAQ#Why_is_0.3_-_0.2_-_0.1_.28or_similar.29_not_equal_to_zero.3F
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Rapheal
2012-5-12
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Image Analyst
2012-5-12
Tried WHAT on two different computers? What was the error (make sure you copy and paste all the red error text)?
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