.. index:: pair: struct; dnnl::softmax_backward::desc
.. _doxid-structdnnl_1_1softmax__backward_1_1desc:

struct dnnl::softmax_backward::desc
===================================

.. toctree::
	:hidden:

Overview
~~~~~~~~

Descriptor for a softmax backward propagation primitive. :ref:`More...<details-structdnnl_1_1softmax__backward_1_1desc>`


.. ref-code-block:: cpp
	:class: doxyrest-overview-code-block

	#include <dnnl.hpp>
	
	struct desc
	{
		// fields
	
		:ref:`dnnl_softmax_desc_t<doxid-structdnnl__softmax__desc__t>` :target:`data<doxid-structdnnl_1_1softmax__backward_1_1desc_1a6ca73b3bbfb161f2afb128eb85255ef5>`;

		// construction
	
		:ref:`desc<doxid-structdnnl_1_1softmax__backward_1_1desc_1a7f6c07b464156be2ad8946e2108fb0f8>`();
	
		:ref:`desc<doxid-structdnnl_1_1softmax__backward_1_1desc_1a7c3b01c94cfd34670dc1176c57de0bf9>`(
			const :ref:`memory::desc<doxid-structdnnl_1_1memory_1_1desc>`& diff_data_desc,
			const :ref:`memory::desc<doxid-structdnnl_1_1memory_1_1desc>`& data_desc,
			int softmax_axis
			);
	};
.. _details-structdnnl_1_1softmax__backward_1_1desc:

Detailed Documentation
~~~~~~~~~~~~~~~~~~~~~~

Descriptor for a softmax backward propagation primitive.

Construction
------------

.. index:: pair: function; desc
.. _doxid-structdnnl_1_1softmax__backward_1_1desc_1a7f6c07b464156be2ad8946e2108fb0f8:

.. ref-code-block:: cpp
	:class: doxyrest-title-code-block

	desc()

Default constructor. Produces an empty object.

.. index:: pair: function; desc
.. _doxid-structdnnl_1_1softmax__backward_1_1desc_1a7c3b01c94cfd34670dc1176c57de0bf9:

.. ref-code-block:: cpp
	:class: doxyrest-title-code-block

	desc(
		const :ref:`memory::desc<doxid-structdnnl_1_1memory_1_1desc>`& diff_data_desc,
		const :ref:`memory::desc<doxid-structdnnl_1_1memory_1_1desc>`& data_desc,
		int softmax_axis
		)

Constructs a descriptor for a softmax backward propagation primitive.



.. rubric:: Parameters:

.. list-table::
	:widths: 20 80

	*
		- diff_data_desc

		- Diff source and diff destination memory descriptor.

	*
		- data_desc

		- Destination memory descriptor.

	*
		- softmax_axis

		- Axis over which softmax is computed.