Hello, I can't figure out what I'm doing wrong with the formula node. I tried this on both LabView 2011 and Labview 2013 version and got the same results. Basically I want to past any numbers with a decimal to the formula node. If the number is more negative than -1 then set the value to -1 and if the number is more positive than 1 then set the number to +1. Anything else just return the input to the output. This arithmetic works correctly when I use the LabView discrete "Select" function. In the formula node I have this code: if(Xin < -1.0) Xout = -1; else Xout = Xin; if(Xin > 1.0) Xout = 1; else Xout = Xin;Where Xin is the input node and Xout is the output node. It works well for anything over +1. If you pass 1.5, you get 1. If you pass 0.5 you get 0.5. It even works for negative number greater than -1. So passing -0.5 you get -0.5 etc. The problem shows up when passing anything more negative than -1. If I pass -1.5, I get -1.5 as the answer. The Labview discrete select function method gives me the correct answer as -1 when passing -1.5. I even tried to make sure that the input is casted to float just in case it got mixed up as an integer. But the results are the same. So either I don't understand the formula node syntax or there's something else going on. float32 X = Xin; if(X < -1.0) Xout = -1; else Xout = Xin; if(X > 1.0) Xout = 1; else Xout = Xin;

Consider the X in= -1.5 case. The first test sets Xout to -1. Then the second test runs and sets Xout to Xin = -1.5. Last test wins. In LabVIEW primitives using the In Range & Coerce function might simplify things a bit and it would be very clear what you were trying to do. Lynn