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lines 6-28 of file: example/multi_thread/harmonic.cpp
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{xrst_begin harmonic_common}

Common Variables Used by Multi-threading Sum of 1/i
###################################################

Purpose
*******
This source code defines the common
include files, defines, and variables that are used by
the summation that defines the harmonic series

.. math::

   1 + 1/2 + 1/3 + ... + 1/n

Source
******
{xrst_literal
   // BEGIN COMMON C++
   // END COMMON C++
}

{xrst_end harmonic_common}