.. _program_listing_file_src_navtk_tensors.hpp:

Program Listing for File tensors.hpp
====================================

|exhale_lsh| :ref:`Return to documentation for file <file_src_navtk_tensors.hpp>` (``src/navtk/tensors.hpp``)

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

.. code-block:: cpp

   #pragma once
   
   #include <initializer_list>
   #include <string>
   #include <utility>
   
   
   #ifndef NAVTK_SCALAR
   #   define NAVTK_SCALAR double
   #endif
   namespace navtk {
   typedef NAVTK_SCALAR Scalar;
   }  // namespace navtk
   
   #ifdef NAVTK_PYTHON_TENSOR
   #   include <xtensor-python/pytensor.hpp>
   namespace navtk {
   template <std::size_t Dims, typename T = Scalar>
   using Tensor = xt::pytensor<T, Dims>;
   // xtensor-python doesn't have a `_fixed` equivalent
   template <int R, int C, typename T = Scalar>
   using MatrixN = xt::pytensor<T, 2>;
   template <int N, typename T = Scalar>
   using VectorN = xt::pytensor<T, 1>;
   }  // namespace navtk
   #else
   #   include <xtensor/containers/xfixed.hpp>
   #   include <xtensor/containers/xtensor.hpp>
   namespace navtk {
   template <std::size_t Dims, typename T = Scalar>
   using Tensor = xt::xtensor<T, Dims>;
   template <int R, int C, typename T = Scalar>
   using MatrixN = xt::xtensor_fixed<T, xt::xshape<R, C> >;
   template <int N, typename T = Scalar>
   using VectorN = xt::xtensor_fixed<T, xt::xshape<N> >;
   }  // namespace navtk
   #endif
   
   #include <xtensor/views/xview.hpp>
   
   namespace navtk {
   
   typedef Tensor<2> Matrix;
   template <typename T>
   using MatrixT = Tensor<2, T>;
   typedef Tensor<1> Vector;
   typedef MatrixN<3, 3> Matrix3;
   typedef VectorN<3> Vector3;
   typedef VectorN<4> Vector4;
   
   template <typename T>
   using VectorT = Tensor<1, T>;
   
   using namespace xt::placeholders;  // required for `_` to work
   using Size = Matrix::size_type;
   
   }  // namespace navtk