Function rgsl::sort::select::sort_largest

pub fn sort_largest(
    dest: &mut [f64], 
    k: usize, 
    src: &[f64], 
    stride: usize
) -> Value

This function copies the k largest elements of the array src, of size n and stride stride, in descending numerical order into the array dest. k must be less than or equal to n. The data src is not modified by this operation.