Implementation of n-dimensional Styblinski-Tang function.
styblinski_tang_func(x)The value of the function.
numeric or complex vector.
On an n-dimensional domain it is defined by
f(x) = 12 _i=1^n ( x_i^4 - 16x_i^2 + 5x_i ),f(x) = 1/2 sum_1^n ( x_i^4 -16x_i^2 +5x_i ), and is usually evaluated on x_i [ -5, 5 ]x_i in [-5, 5], for all i=1,...,ni=1,...,n. The function has one global minimum at f(x) = -39.16599nf(x) = -39.16599n for x_i=-2.903534x_i=-2.903534 for all i=1,...,ni=1,...,n.
Styblinski1990EmiR