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30-seconds-of-code/snippets/approximatelyEqual.md
30secondsofcode 9ce2497765 Travis build: 1671
2018-02-14 10:48:38 +00:00

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### approximatelyEqual
Checks if two numbers are approximately equal to each other.
Use `Math.abs()` to compare the absolute difference of the two values to `epsilon`.
Omit the third parameter, `epsilon`, to use a default value of `0.001`.
```js
const approximatelyEqual = (v1, v2, epsilon = 0.001) => Math.abs(v1 - v2) < epsilon;
```
```js
approximatelyEqual(Math.PI / 2.0, 1.5708); // true
```