0.1+0.2-0.3=?

Hello,

Apologies if I'm doing something stupid, but could someone please explain why 0.1+0.2-0.3 apparently equals 5.5511e-017?

If this is confirmed, I find it quite worrying, so are there other such "features" that may be quietly affecting my results without me being aware of them?

Many thanks, Jon.

Answer 1

[Sean de Wolski]

stupid, no; common, yes.

FAQ6.1

In fact this is the most frequently asked question on here and CSSM.

[Jon]

Many thanks, I missed previous mentions of this. Glad it's not just me!

[Sean de Wolski]

You're welcome; welcome to MATLAB Answers!