[Interest] JS numbers to qint64

[Thiago Macieira]

On quarta-feira, 12 de julho de 2017 02:53:39 PDT Shantanu Tushar wrote:
> qml: Opening 5762702576189441
> Opening 5762702576189442
> 
> As you can see the number changes. What am I doing wrong?

Expecting JS numbers to be precise.

Remember that in JavaScript, numbers are actually double-precision floating 
point. They are lossy.

They can represent with fidelity only in the range ±2^53. Yours is inside the 
range (only just!) but a simple manipulation of it could throw it outside for 
a while.

I recommend staying well away from the limits. Like limiting to 32 bits.

-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center