[−][src]Function argmin_testfunctions::sphere
pub fn sphere<T: Float + FromPrimitive + Sum>(param: &[T]) -> T
Sphere test function
Defined as
`f(x_1, x_2, ..., x_n) = \sum_{i=1}^n x_i^2
where x_i \in (-\infty, \infty)
and n > 0
.
The global minimum is at f(x_1, x_2, ..., x_n) = f(0, 0, ..., 0) = 0
.