Function thermal_equilibration 

pub fn thermal_equilibration(
    solver: &GpuThermalSolver,
    old: &[f64],
    tol: f64,
) -> bool

Check whether the temperature field has reached thermal equilibrium.

Returns true when the maximum absolute change between old and the current field is below tol.

Arguments

• solver - The thermal solver (current state).
• old - Temperature field from the previous iteration.
• tol - Convergence tolerance (K or simulation units).