0.1 + 0.2 == 0.3 -> false 0.1 + 0.2 -> 0.30000000000000004 Why does this happen?
The following code is obviously wrong. What's the problem? i <- 0.1 i <- i + 0.05 i ##  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
How do you explain floating point inaccuracy to fresh programmers and laymen who still think computers are infinitely wise and accurate? Do you have a favourite example or anecdote which seems to get ...
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...
$a = '35'; $b = '-34.99'; echo ($a + $b); Results in 0.009999999999998 What is up with that? I wondered why my program kept reporting odd results. Why doesn't PHP return the expected 0.01?
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 ...
I have a very annoying problem with long sums of floats or doubles in Java. Basically the idea is that if I execute: for ( float value = 0.0f; value < 1.0f; value += 0.1f ) System.out.println(...