It's a bug?
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Emiliano Rosso
le 29 Nov 2018
Modifié(e) : madhan ravi
le 29 Nov 2018
I discovered a potential bug and I want to report it:
Matlab R2018a windows 10
alfa=-0.0052+(61-1)*0.0001;
reasoning this is 0.0060-0.0052=0.0008=8e-04
so:
alfa2=8e-04;
isequal(alfa,alfa2)
ans
0
if you open alfa variable you can see:
8.000000000000004e-04
in fact if you round alfa:
alfa3=round(alfa,10);
isequal(alfa2,alfa3)
ans
1
That's all Thanks
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Bruno Luong
le 29 Nov 2018
Welcome to the club, you are one more person who confuses about finite precision floating point calculation.
Réponse acceptée
madhan ravi
le 29 Nov 2018
Modifié(e) : madhan ravi
le 29 Nov 2018
It‘s called floating point comparison just search with the tag floating-point in this forum you will find lot of reasons
abs(alfa-alfa2)<1e-04
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