Parameter Not Rounding Correctly

[j_berry]

I'm getting unexpected results using "round( )" in the parameters table. File attached (Inventor 2014). Details below.

width = 35.125

end_result = round(width)

Nominal value for "end_result" is 35.039370. Why is this not rounding to exactly 35?

[cwhetten · Accepted solution]

It's probably a units problem.  For whatever reason, the round( ) function expects a unitless value, and returns a unitless value.  So, if width and end_result are in mm, you will have to write your function like this:

round( width / 1mm ) * 1mm

The ceil( ) and floor( ) functions suffer the same ailment.

Cameron Whetten
Inventor 2014

Please click "Accept as Solution" if this response answers your question.

[Curtis_Waguespack]

Hi  j_berry,

See this link for further information:

http://forums.autodesk.com/t5/Autodesk-Inventor/parameter-rounding-up-to-nearest-fractional-part-of-...

If that helps, you might give  cwhetten a couple of kudos for the well written explanation.

I hope this helps.
Best of luck to you in all of your Inventor pursuits,
Curtis
http://inventortrenches.blogspot.com

[brucejwheeler]

Is there a way to "round up" or "round down"? This would give a conditional number.

If I round()*1, I may get a decimal number (less than 1). My preference would be to rounddown to recieve a lwer whole number.

[mikejones]

You'll need to use FLOOR() or CEIL() to round up or down respectively

Mike

[brucejwheeler]

Thanks Mike this works!!