.. index:: pair: struct; dnnl::logsoftmax_backward::desc
.. _doxid-structdnnl_1_1logsoftmax__backward_1_1desc:

struct dnnl::logsoftmax_backward::desc
======================================

.. toctree::
	:hidden:

Overview
~~~~~~~~

Descriptor for a logsoftmax backward propagation primitive. :ref:`More...<details-structdnnl_1_1logsoftmax__backward_1_1desc>`


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

	#include <dnnl.hpp>
	
	struct desc
	{
		// fields
	
		:ref:`dnnl_logsoftmax_desc_t<doxid-group__dnnl__api__logsoftmax_1ga312b4653a7712a595c96e23cddd7b8d8>` :target:`data<doxid-structdnnl_1_1logsoftmax__backward_1_1desc_1abf2797265c6c209b9c59f5c24c62ea71>`;

		// construction
	
		:ref:`desc<doxid-structdnnl_1_1logsoftmax__backward_1_1desc_1a08c7a60efa0c72ef3f5b2e06ade71558>`();
	
		:ref:`desc<doxid-structdnnl_1_1logsoftmax__backward_1_1desc_1a6818afe6a767ad7af4b5c286d533be66>`(
			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 logsoftmax_axis
			);
	};
.. _details-structdnnl_1_1logsoftmax__backward_1_1desc:

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

Descriptor for a logsoftmax backward propagation primitive.

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

.. index:: pair: function; desc
.. _doxid-structdnnl_1_1logsoftmax__backward_1_1desc_1a08c7a60efa0c72ef3f5b2e06ade71558:

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

	desc()

Default constructor. Produces an empty object.

.. index:: pair: function; desc
.. _doxid-structdnnl_1_1logsoftmax__backward_1_1desc_1a6818afe6a767ad7af4b5c286d533be66:

.. 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 logsoftmax_axis
		)

Constructs a descriptor for a logsoftmax backward propagation primitive.



.. rubric:: Parameters:

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

	*
		- diff_data_desc

		- Diff source and diff destination memory descriptors.

	*
		- data_desc

		- Destination memory descriptor.

	*
		- logsoftmax_axis

		- Axis over which softmax is computed.