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How to check class double number for non-zero decimals in an if statement?

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I'm writing a GUI, and entries for specific edit text boxes are not supposed to contain decimals. I'm trying to use an if statement to tell whether or not a class double has non-zero numbers after the decimal point.
My goal is to give feedback with a 'msgbox' so that if a decimal is entered, the user is notified to enter an integer instead. Does anyone have any tips on how to properly define a condition to check for decimals in an if statement?
Thanks!

Accepted Answer

Star Strider
Star Strider on 16 Jun 2017
One approach would be to use the rem or mod functions:
x1 = 42.00;
y1 = rem(x1,1)
x2 = 42.42;
y2 = rem(x2,1)
y1 =
0
y2 =
0.42
Then test if the result is 0.

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