\(\newcommand{\W}[1]{ \; #1 \; }\) \(\newcommand{\R}[1]{ {\rm #1} }\) \(\newcommand{\B}[1]{ {\bf #1} }\) \(\newcommand{\D}[2]{ \frac{\partial #1}{\partial #2} }\) \(\newcommand{\DD}[3]{ \frac{\partial^2 #1}{\partial #2 \partial #3} }\) \(\newcommand{\Dpow}[2]{ \frac{\partial^{#1}}{\partial {#2}^{#1}} }\) \(\newcommand{\dpow}[2]{ \frac{ {\rm d}^{#1}}{{\rm d}\, {#2}^{#1}} }\)
atomic_four_vector_rev_depend.hpp¶
View page sourceAtomic Vector Forward Type Calculation: Example Implementation¶
Purpose¶
The rev_depend
routine overrides the virtual functions
used by the atomic_four base class for Jacobian sparsity calculations; see
rev_depend .
Example¶
The file atomic_four_vector_rev_depend.cpp contains an example and test that uses this member function.
Source¶
# include <cppad/example/atomic_four/vector/vector.hpp>
namespace CppAD { // BEGIN_CPPAD_NAMESPACE
//
// rev_depend override
template <class Base>
bool atomic_vector<Base>::rev_depend(
size_t call_id ,
const CppAD::vector<bool>& ident_zero_x,
CppAD::vector<bool>& depend_x ,
const CppAD::vector<bool>& depend_y )
{
// n, m
size_t n = depend_x.size();
size_t m = depend_y.size();
//
// type_y
if( n == m )
{ // unary operator
for(size_t i = 0; i < m; ++i)
depend_x[i] = depend_y[i];
}
else
{ // binary operator
for(size_t i = 0; i < m; ++i)
{ depend_x[i] = depend_y[i];
depend_x[m + i] = depend_y[i];
}
}
return true;
}
} // END_CPPAD_NAMESPACE