According to this java.sun page == is the equality comparison operator for floating point numbers in Java. However, when I type this code: if(sectionID == currentSectionID) into my editor and run static analysis, I get: “JAVA0078 Floating point values compared with ==” What is wrong with using == to compare floating point values? What is … Read more
The following code is obviously wrong. What’s the problem? i <- 0.1 i <- i + 0.05 i ## [1] 0.15 if(i==0.15) cat(“i equals 0.15”) else cat(“i does not equal 0.15”) ## i does not equal 0.15 6 Answers 6
I know UIKit uses CGFloat because of the resolution independent coordinate system. But every time I want to check if for example frame.origin.x is 0 it makes me feel sick: if (theView.frame.origin.x == 0) { // do important operation } Isn’t CGFloat vulnerable to false positives when comparing with ==, <=, >=, <, >? It … Read more
Consider the following code: 0.1 + 0.2 == 0.3 -> false 0.1 + 0.2 -> 0.30000000000000004 Why do these inaccuracies happen? 3 31
