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Added a short explanation for Double.MAX_VALUE 

https://youtrack.jetbrains.com/issue/EDC-420
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Svetlana Isakova 2021-07-19 15:44:12 +02:00
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Programming Basics/Summary 1/Exercise 4/task.md
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@ -5,3 +5,16 @@ This exercise modifies `Overflow.kt` to test `Long` and `Double`. Implement
`testDouble()` display the `Double` maximum value incremented by `1`. Make
`testDouble2()` display the result of comparing `Double.MAX_VALUE` and
`Double.MAX_VALUE + 1`.
The `Double` type usually occupies 64 bits in memory.
Because of memory constraints, `Double` represents numbers with some
precision.
You can read more about its internal representation on
[Wikipedia](https://en.wikipedia.org/wiki/Double-precision_floating-point_format).
The `Double.MAX_VALUE` constant has a special meaning: it holds the largest
positive finite value of `Double`. You can't increase it; if you try to add
a positive number to it, it results in the same maximum value. It works somewhat
similarly to `Double.POSITIVE_INFINITY`: it's a constant with special treatment
holding the positive infinity value of `Double`. You can use these constants
for comparisons with regular `Double` values.