I have this piece of javascript code that I am trying to understand

```
return ( n >>> 0 ) * 2.34e10;
```

So what does >>> mean?

And thanks in advance ... this is my first question on SO

It's a zero-fill right shift. This won't do anything to positive whole numbers or 0, but it does funny things on negative numbers (because the most significant bit changes to zero).

```
2 >>> 0 === 2
1 >>> 0 === 1
0 >>> 0 === 0
-1 >>> 0 === 4294967295
-2 >>> 0 === 4294967294
-3 >>> 0 === 4294967293
```

It should be noted (thanks Andy!) that bit shifting in JavaScript converts the arguments to signed 32-bit integers before doing the shifting. Therefore `>>> 0`

essentially does a `Math.floor`

on positive numbers:

```
1.1 >>> 0 === 1
1.9 >>> 0 === 1
```

It's a bitwise operator. It means shift n by 0 bits. Not sure what it's trying to do in the instance you show.

```
a >>> b // shift a by b bits to the right, padding with zeros
```

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