Function left

left(x, n): number
Bitwise left shift operator (x << n) for large unsigned integers.
Parameters
- x: number
  The integer.
- n: number
  The number of bytes to shift to the left.
Returns number
Example
```
left(0x11_22_33_44, 24)
// ⮕ 0x11_22_33_44_00_00_00
```