docs/cpp/source/notes/versioning.rst

Library Versioning
==================

We provide version number macros for identifying the version of LibTorch in use.
Example usage:

.. code-block:: cpp

  #include <torch/torch.h>
  #include <iostream>

  int main() {
    std::cout << "PyTorch version from parts: "
      << TORCH_VERSION_MAJOR << "."
      << TORCH_VERSION_MINOR << "."
      << TORCH_VERSION_PATCH << std::endl;
    std::cout << "PyTorch version: " << TORCH_VERSION << std::endl;
  }

This will output something like:

.. code-block:: text

  PyTorch version from parts: 1.8.0
  PyTorch version: 1.8.0

.. note::

  These macros are only available in PyTorch >= 1.8.0.