Encog.MathUtil.LIBSVM.Cache.get_data C# (CSharp) Method

        internal virtual int get_data(int index, float[][] data, int len)
        {
            head_t h = head[index];
            if (h.len > 0)
                lru_delete(h);
            int more = len - h.len;

            if (more > 0)
            {
                // free old space
                while (size < more)
                {
                    head_t old = lru_head.next;
                    lru_delete(old);
                    size += old.len;
                    old.data = null;
                    old.len = 0;
                }

                // allocate new space
                var new_data = new float[len];
                if (h.data != null)
                    Array.Copy(h.data, 0, new_data, 0, h.len);
                h.data = new_data;
                size -= more;
                do
                {
                    int _ = h.len;
                    h.len = len;
                    len = _;
                } while (false);
            }

            lru_insert(h);
            data[0] = h.data;
            return len;
        }