+ if (!prev_cx || this_value > prev_value)
+ {
+ if (prev_cx)
+ update_k_values (prev_cx, prev_value, c_i, cc_i, os, n_os);
+ prev_value = this_value;
+ c_i = weight;
+ }
+ else
+ {
+ /* Data values must be sorted. */
+ assert (this_value == prev_value);
+
+ c_i += weight;
+ }