The Very Fast Simulated Annealing acceptation function.
Level = accept_func_vfsa(F_current, F_neigh, T)
the current function value
the function value of the neighbour
the current temperature
the level of acceptation, in the interval [0,1].
The accept_func_vfsa
provides the Very Fast Simulated Annealing acceptation function.
If the level computed by the acceptation function is higher than the generated uniform random number in the interval [0,1], then the neighbour is accepted.
The formula used in the implementation is the following.