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.. summary::

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Description
-----------

This executes the natural logarithm operation on a :ref:`MDHistoWorkspace <MDHistoWorkspace>`.

The signal :math:`a` becomes :math:`f = log(a)`

The error :math:`da` becomes :math:`df^2 = a^2 / da^2`

This algorithm cannot be run on a
:ref:`MDEventWorkspace <MDWorkspace>`. Its equivalent on a
:ref:`MatrixWorkspace <MatrixWorkspace>` is called
:ref:`algm-Logarithm`.

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.. sourcelink::