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lines 921-970 of file: include/cppad/example/valvector/class.hpp
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   {xrst_begin valvector_condexp}
   {xrst_spell
      valvectors
   }

   The valvector Conditional Expressions
   #####################################
   Computes element-by-element :ref:`CondExp-name` values where
   the arguments are valvectors.

   Syntax
   ******
   *result* = ``CondExp`` *Rel* ( *left* , *right* , *if_true* , *if_false* )

   Discussion
   **********
   For each valid index *i* , this computes the result

   | |tab| ``if`` ( *left* [ *i* ] *op* *right* [ *i* ]  )
   | |tab| |tab| *result* [ *i* ] = *if_true* [ *i* ]
   | |tab| ``else``
   | |tab| |tab| *result* [ *i* ] = *if_false* [ *i* ]

   where the relational *Rel* and the operator *op*
   have the following correspondence:

   .. csv-table::

      *Rel* , ``Lt`` , ``Le`` , ``Eq`` , ``Ge`` , ``Gt``
      *op*  ,  <     , <=     , ==     , >=     , >

   Arguments
   *********
   All of the argument are ``const`` valvectors.

   result
   ******
   The result has size equal to the maximum of the size of
   *left* , *right* , *if_true* and *if_false* .
   The size of each argument must be one, or the same as the size of *result*.

   {xrst_toc_hidden
      example/valvector/condexp.cpp
   }
   Example
   =======
   The file :ref:`valvector_condexp.cpp-name` is an example and test of the
   valvector conditional expressions.

   {xrst_end valvector_condexp}