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Tag Archives: Math

Why Math.round(0.499999999999999917) rounds to 1 on Java 6


Overview There are two types of error representation error and arithmetic rounding error which are common in floating point calculations. These two error combine in this simple example, Math.round(0.499999999999999917) rounds to 1 in Java 6. Representation error Floating point is a base 2 format, which means all number are represented as a sum of powers of 2. e.g. 6.25 is ...

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