@(@\newcommand{\W}[1]{ \; #1 \; }
\newcommand{\R}[1]{ {\rm #1} }
\newcommand{\B}[1]{ {\bf #1} }
\newcommand{\D}[2]{ \frac{\partial #1}{\partial #2} }
\newcommand{\DD}[3]{ \frac{\partial^2 #1}{\partial #2 \partial #3} }
\newcommand{\Dpow}[2]{ \frac{\partial^{#1}}{\partial {#2}^{#1}} }
\newcommand{\dpow}[2]{ \frac{ {\rm d}^{#1}}{{\rm d}\, {#2}^{#1}} }@)@
This is cppad-20221105 documentation. Here is a link to its
current documentation
.
AD Parameter and Variable Functions: Example and Test
# include <cppad/cppad.hpp>
bool con_dyn_var(void)
{ bool ok = true;
using CppAD::AD;
using CppAD::VecAD;
using CppAD::Parameter;
using CppAD::Variable;
// No recording activeCPPAD_TESTVECTOR(AD<double>) x(1), y(1), dynamic(1);
x[0] = 0.0;
y[0] = 1.0;
dynamic[0] = 2.0;
//
ok &= Constant(x[0]);
ok &= Parameter(x[0]);
ok &= ! Dynamic(x[0]);
ok &= ! Variable(x[0]);
//
ok &= Constant(y[0]);
ok &= Parameter(y[0]);
ok &= ! Dynamic(y[0]);
ok &= ! Variable(y[0]);
//
ok &= Constant(dynamic[0]);
ok &= Parameter(dynamic[0]);
ok &= ! Dynamic(dynamic[0]);
ok &= ! Variable(dynamic[0]);
// declare independent variables and start recording
CppAD::Independent(x, dynamic);
//
ok &= Variable(x[0]);
ok &= ! Constant(x[0]);
ok &= ! Dynamic(x[0]);
ok &= ! Parameter(x[0]);
//
ok &= Constant(y[0]);
ok &= Parameter(y[0]);
ok &= ! Dynamic(y[0]);
ok &= ! Variable(y[0]);
//
ok &= Dynamic(dynamic[0]);
ok &= Parameter(dynamic[0]);
ok &= ! Constant(dynamic[0]);
ok &= ! Variable(dynamic[0]);
// a dependent variable
y[0] = fabs(x[0]) * dynamic[0];
ok &= Variable(y[0]);
ok &= ! Constant(y[0]);
ok &= ! Dynamic(y[0]);
ok &= ! Parameter(y[0]);
// create f: x -> y and stop tape recording
CppAD::ADFun<double> f(x, y);
//
ok &= Constant(x[0]);
ok &= Parameter(x[0]);
ok &= ! Dynamic(x[0]);
ok &= ! Variable(x[0]);
//
ok &= Constant(y[0]);
ok &= Parameter(y[0]);
ok &= ! Dynamic(y[0]);
ok &= ! Variable(y[0]);
//
ok &= Constant(dynamic[0]);
ok &= Parameter(dynamic[0]);
ok &= ! Dynamic(dynamic[0]);
ok &= ! Variable(dynamic[0]);
return ok;
}
