It's a bug?
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Emiliano Rosso
il 29 Nov 2018
Modificato: madhan ravi
il 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
1 Commento
Bruno Luong
il 29 Nov 2018
Welcome to the club, you are one more person who confuses about finite precision floating point calculation.
Risposta accettata
madhan ravi
il 29 Nov 2018
Modificato: madhan ravi
il 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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