Physical to Lattice time

[achodankar]

Hello Developers,
Can you explain why 0.5 is added while converting physical time to lattice time?
My understanding is lattice time = physical time/(conversion factor for time)

Here is the code snippet from the source code:

constexpr size_t getLatticeTime( T physTime ) const
{
return size_t(physTime / _conversionTime + 0.5);
}

Thank you.

Yours sincerely,

Abhijeet D. Chodankar

[mathias]

Its rounding to the next integer.

[achodankar]

Hello Mathias,
Thank you for your response. I used two ways to declare the values:
1) const T
2) size_t (as done in the code)

Why use size_t over const T declaration? I get the same values. I understand the rounding part as you suggested.

Here is the code snippet I tested with

cout<<“The physical simulation time is “<<maxPhysT<<endl;
size_t lattice_time = (maxPhysT/converter.getConversionFactorTime()+0.5);

OR

const T lattice_time = maxPhysT/converter.getConversionFactorTime();

cout<<“The Lattice time is “<<converter.getLatticeTime(maxPhysT)<<endl;
cout<<“The Lattice time is “<<lattice_time<<endl;

Thank you.

Yours sincerely,

Abhijeet D. Chodankar

[mathias]

Because lattice time is an integer value! It must be int, size_T or similar!

[achodankar]

Hello Mathias,
Thank you very much. I understand it well now.

Yours sincerely,

Abhijeet

[Author]

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