LabVIEW

cancel
Showing results for 
Search instead for 
Did you mean: 

Error while calculating (4.25 - 5.35 equals 4.44089E-126)

Greetings,

I have a rather unusual error. As you can see from the picture named "not_working.png", "x+y" should be zero, but instead it's "4.44089E-16". But, when I remove the "4.25 - 5.35" part of the calculation and do the math by hand (see "working.png") then everything works as it should. I simplified this .vi only to show you the mentioned problem. I am rather new to Labview, so I suppose the problem is in some minor detail, but I can't seem to find it.

Thank you in advance

Download All
0 Kudos
Message 1 of 2
(2,598 Views)

Any time I see someone asking about epsilon and doing math with computers, I have to post a link to this thread.

 

The readers digest version of the reply amounts to this.

 

In the same way we can't express teh number 1/3 in decimal, the number 1/10 can not be expressed in binary.

 

See those links above for previous discusions on comparing numbers.

 

Ben

Retired Senior Automation Systems Architect with Data Science Automation LabVIEW Champion Knight of NI and Prepper LinkedIn Profile YouTube Channel
Message 2 of 2
(2,577 Views)