@(@\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 Output Operator: Example and Test
# include <cppad/cppad.hpp>
# include <sstream> // std::ostringstream# include <string> // std::string# include <iomanip> // std::setprecision, setw, setfill, rightnamespace {
template <class S>
void set_ostream(S &os)
{ os
<< std::setprecision(4) // 4 digits of precision
<< std::setw(6) // 6 characters per field
<< std::setfill(' ') // fill with spaces
<< std::right; // adjust value to the right
}
}
bool ad_output(void)
{ bool ok = true;
// This output stream is an ostringstream for testing purposes.// You can use << with other types of streams; i.e., std::cout.
std::ostringstream stream;
// ouput an AD<double> object
CppAD::AD<double> pi = 4. * atan(1.); // 3.1415926536set_ostream(stream);
stream << pi;
// ouput a VecAD<double>::reference object
CppAD::VecAD<double> v(1);
CppAD::AD<double> zero(0);
v[zero] = exp(1.); // 2.7182818285set_ostream(stream);
stream << v[zero];
// convert output from stream to string
std::string str = stream.str();
// check the output
ok &= (str == " 3.142 2.718");
return ok;
}
