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xtensor

Multi-dimensional arrays with broadcasting and lazy computing.

Introduction

xtensor is a C++ library meant for numerical analysis with multi-dimensional array expressions.

xtensor provides

  • an extensible expression system enabling lazy broadcasting.
  • an API following the idioms of the C++ standard library.
  • tools to manipulate array expressions and build upon xtensor.

Containers of xtensor are inspired by NumPy, the Python array programming library. Adaptors for existing data structures to be plugged into the expression system can easily be written.

In fact, xtensor can be used to process numpy data structures in-place using Python's buffer protocol. For more details on the numpy bindings, check out the xtensor-python project. Language bindings for R and Julia are also available.

xtensor requires a modern C++ compiler supporting C++14. The following C++ compilers are supported:

  • On Windows platforms, Visual C++ 2015 Update 2, or more recent
  • On Unix platforms, gcc 4.9 or a recent version of Clang

Licensing

We use a shared copyright model that enables all contributors to maintain the copyright on their contributions.

This software is licensed under the BSD-3-Clause license. See the LICENSE file for details.

.. toctree::
   :caption: INSTALLATION
   :maxdepth: 1

   installation
   changelog


.. toctree::
   :caption: USAGE
   :maxdepth: 2

   getting_started
   expression
   container
   scalar
   adaptor
   operator
   view
   indices
   builder
   missing
   histogram
   random
   rank
   file_loading
   build-options
   pitfall


.. toctree::
   :caption: QUICK REFERENCE
   :maxdepth: 2

   quickref/basic
   quickref/builder
   quickref/operator
   quickref/math
   quickref/reducer
   view
   quickref/iterator
   quickref/manipulation
   quickref/chunked_arrays


.. toctree::
   :caption: API REFERENCE
   :maxdepth: 2

   api/expression_index
   api/container_index
   api/iterator_index
   api/function_index
   api/io_index
   api/xmath


.. toctree::
   :caption: DEVELOPER ZONE
   :maxdepth: 2

   compilers
   dev-build-options
   developer/xtensor_internals
   external-structures
   releasing


.. toctree::
   :caption: MISCELLANEOUS

   numpy
   numpy-differences
   closure-semantics
   related
   bindings