struct yac_interp_operator * yac_interp_operator_sum_mvp_at_tgt_new(struct yac_collection_selection const *collection_selection, Xt_redist *src_redists, size_t *tgt_pos, size_t tgt_count, size_t *num_src_per_tgt, double *weights, size_t *src_field_idx, size_t *src_idx, size_t num_src_fields, int with_frac_mask)
Create a sum (weighted or unweighted) interpolation operator computed on the target processes.