How to restrict user to enter decimals

Summary

One customer want to restrict the users to enter decimals on forms, is this possible?

Content

Hello everyone,

We have a customer that want to enter whole numbers as part of their budget and they want to restrict user to enter decimals on forms, is this possible?  We use in the forms, the precision minimum and maximum to be 0, but this is a mask.  If the user enter 1.5, the form allow it and shows 2 on the cell.

Thanks for your advises.