How to use inches in expression function

[bananaphone]

The ceil function isn't working as expected for me. It seems to have something to do with the unit.

For example, this expression
=ceil(40.1) correctly resolves to 41

However this resolves to some weird value:
=ceil(40.1 in) incorrectly resolves to 40.12 in

Ultimately I'm trying to round an expression up to the nearest 1/8th of an inch. Normally I could do that like this:
=ceil( someValue / (1/8) ) * (1/8)

But if someValue is in inches, it doesn't work correctly.

What am I missing here? Thanks in advance!

[GeneFC]

It is clear that the ceiling is being calculated on the metric equivalent of the entry value.

Probably could be considered a bug, or at least a missing function.

FreeCAD does all internal calculations in metric, so a special function would be needed to calculate floor and ceiling for dimensions in other units.

Most linear and analytic functions work correctly in any units, but floor and ceiling are not linear nor analytic.

Gene

[chrisb]

You may need something like

Code: Select all

ceil(someValue*2.54 / (1/8)) * (1/8)

[openBrain]

You may need something like

Code: Select all

ceil(someValue*2.54 / (1/8) * (1/8))

One of the closing parentheses is misplaced.

[chrisb]

One of the closing parentheses is misplaced.

Thanks for the hint. I have corrected my post above.