int RTOp_apply_op_serial(RTOp_index_type full_dim, const int num_vecs, const RTOp_value_type *vec_ptrs[], const ptrdiff_t vec_strides[], const int num_targ_vecs, RTOp_value_type *targ_vec_ptrs[], const ptrdiff_t targ_vec_strides[], const RTOp_index_type first_ele, const RTOp_index_type sub_dim, const RTOp_index_type global_offset, const struct RTOp_RTOp *op, RTOp_ReductTarget reduct_obj)