Dear forum,

I've been looking around but couldn't find an answer to this weird issue I'm having.

number
|
[t f f]
| |
| [int]
| /
[ - ]
|
number

When I subtract in this way 10 from 10.4 I get 0.4, as it seems logical.

But when I subtract a higher number, e.g. 180 from 180.4 I get 0.399994 instead of 0.4

Why is that?

Thanks!
Martin

This is computer imprecision caused by floating point numbers. The greater the float, the more likely it is to get these type of errors. If you think about it, 0.399994 is veeery close to 4, but not entirely. This is because your computer (and every computer) fails to represent great floats with perfect precision.
Maybe this can clarify some things...

Cool, thanks!

Martin