text: // Copyright 2019-2021 Cambridge Quantum Computing
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  //     http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  
  #pragma once
  
  #include "Utils/MatrixAnalysis.hpp"
  
  namespace tket {
  class PauliExpBox;
  namespace tket_sim {
  namespace internal {
  
  /** Returns the triplets which make up the sparse unitary matrix
   *  of the given box, in ILO-BE convention.
   */
  std::vector<TripletCd> get_triplets(const PauliExpBox& box);
  
  }  // namespace internal
  }  // namespace tket_sim
  }  // namespace tket
  