.. py:module:: ethereum.constantinople.vm.instructions.log

Ethereum Virtual Machine (EVM) Logging Instructions
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

.. contents:: Table of Contents
    :backlinks: none
    :local:

Introduction
------------

Implementations of the EVM logging instructions.


.. only:: stage1

Module Contents
---------------


Functions
~~~~~~~~~

.. autoapisummary::
   :nosignatures:

   ethereum.constantinople.vm.instructions.log.log_n



Attributes
~~~~~~~~~~

.. autoapisummary::

   ethereum.constantinople.vm.instructions.log.log0
   ethereum.constantinople.vm.instructions.log.log1
   ethereum.constantinople.vm.instructions.log.log2
   ethereum.constantinople.vm.instructions.log.log3
   ethereum.constantinople.vm.instructions.log.log4


Module Details
---------------

log_n
~~~~~


.. function:: log_n(evm: ethereum.constantinople.vm.Evm, num_topics: ethereum.base_types.U256) -> None
   :noindexentry:

   Appends a log entry, having `num_topics` topics, to the evm logs.

   This will also expand the memory if the data (required by the log entry)
   corresponding to the memory is not accessible.

   :param evm: The current EVM frame.
   :param num_topics: The number of topics to be included in the log entry.




.. undocinclude:: /../src/ethereum/constantinople/vm/instructions/log.py
   :language: python
   :pyobject: log_n

log0
~~~~



.. py:data:: log0
   
   

.. undocinclude:: /../src/ethereum/constantinople/vm/instructions/log.py
   :language: python
   :lines: 84-84


log1
~~~~



.. py:data:: log1
   
   

.. undocinclude:: /../src/ethereum/constantinople/vm/instructions/log.py
   :language: python
   :lines: 85-85


log2
~~~~



.. py:data:: log2
   
   

.. undocinclude:: /../src/ethereum/constantinople/vm/instructions/log.py
   :language: python
   :lines: 86-86


log3
~~~~



.. py:data:: log3
   
   

.. undocinclude:: /../src/ethereum/constantinople/vm/instructions/log.py
   :language: python
   :lines: 87-87


log4
~~~~



.. py:data:: log4
   
   

.. undocinclude:: /../src/ethereum/constantinople/vm/instructions/log.py
   :language: python
   :lines: 88-88