lines 10-86 of file: include/cppad/core/con_dyn_var.hpp

{xrst_begin con_dyn_var}

Constant, Dynamic, Parameter, and Variable
##########################################

Syntax
******

| *b* = ``Constant`` ( *x* )
| *b* = ``Dynamic`` ( *x* )
| *b* = ``Parameter`` ( *x* )
| *b* = ``Variable`` ( *x* )

x
*
The argument *x* has prototype

| |tab| ``const AD`` < *Base* >    & *x*
| |tab| ``const VecAD`` < *Base* > & *x*

b
*
The return value *b* has prototype

   ``bool`` *b*

Constant
********
The return value for ``Constant`` is true
is true if and only if *x* is
a :ref:`glossary@Parameter@Constant` parameter.
A :ref:`VecAD\<Base><VecAD-name>` object is a constant parameter
if no element of the vector depends on the independent variables.

Dynamic
*******
The return value for ``Dynamic`` is true
is true if and only if *x* is
a :ref:`glossary@Parameter@Dynamic` parameter.
No element of a :ref:`VecAD\<Base><VecAD-name>` object
can depend on the dynamic parameters and this function returns false
for these objects.

Parameter
*********
The return value for ``Parameter`` is true
is true if and only if *x* is
a :ref:`glossary@Parameter` .
A :ref:`VecAD\<Base><VecAD-name>` object is a parameter
if no element of the vector depends on the independent variables.

Variable
********
The return value for ``Variable`` is true
is true if and only if *x* is
a :ref:`glossary@Variable` .
A :ref:`VecAD\<Base><VecAD-name>` object is a variable
if any element of the vector depends on the independent variables.

Operation Sequence
******************
The result of this operation is not an
:ref:`glossary@AD of Base` object.
Thus it will not be recorded as part of an
AD of *Base*
:ref:`operation sequence<glossary@Operation@Sequence>` .

Example
*******
{xrst_toc_hidden
   example/general/con_dyn_var.cpp
}
The file
:ref:`con_dyn_var.cpp-name`
contains an example and test of these functions.

{xrst_end con_dyn_var}