.. _program_listing_file_SeQuant_domain_mbpt_utils.hpp:

Program Listing for File utils.hpp
==================================

|exhale_lsh| :ref:`Return to documentation for file <file_SeQuant_domain_mbpt_utils.hpp>` (``SeQuant/domain/mbpt/utils.hpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   //
   // Created by Ajay Melekamburath on 9/26/25.
   //
   
   #ifndef SEQUANT_DOMAIN_MBPT_UTILS_HPP
   #define SEQUANT_DOMAIN_MBPT_UTILS_HPP
   
   #include <SeQuant/core/expr.hpp>
   #include <SeQuant/core/rational.hpp>
   #include <SeQuant/core/runtime.hpp>
   
   #include <SeQuant/domain/mbpt/op.hpp>
   
   #include <range/v3/view.hpp>
   
   namespace sequant::mbpt {
   
   struct LSTOptions {
     bool unitary = false;
     bool use_commutators = false;
     bool skip_clone = false;
   };
   
   // clang-format off
   // clang-format on
   ExprPtr lst(ExprPtr A, ExprPtr B, size_t commutator_rank,
               const LSTOptions& options = {});
   
   ExprPtr screen_vac_av(ExprPtr expr, bool skip_clone = false);
   
   }  // namespace sequant::mbpt
   
   #endif  // SEQUANT_DOMAIN_MBPT_UTILS_HPP