|
CppAD: A C++ Algorithmic Differentiation Package
20130102
|
| VectorSet ADFun< Base >::ForSparseJac | ( | size_t | q, |
| const VectorSet & | r | ||
| ) |
User API for Jacobian sparsity patterns using forward mode.
The C++ source code corresponding to this operation is
s = f.ForSparseJac(q, r)
| Base | is the base type for this recording. |
| VectorSet | is a simple vector with elements of type bool or std::set<size_t>. |
| q | is the number of columns in the matrix . |
| r | is a sparsity pattern for the matrix . |
VectorSet::value_type is bool, the return value s is a vector with size m*q where m is the number of dependent variables corresponding to the operation sequence stored in f. If VectorSet::value_type is std::set<size_t>, the return value s is a vector of sets with size m and with all its elements between zero and q - 1. The value of s is the sparsity pattern for the matrix
is the function corresponding to the operation sequence and x is any argument value.VectorSet::value_type is bool, the forward sparsity pattern for all of the variables on the tape is stored in for_jac_sparse_pack__. In this case for_jac_sparse_pack_.n_set() == total_num_var_ for_jac_sparse_pack_.end() == q for_jac_sparse_set_.n_set() == 0 for_jac_sparse_set_.end() == 0
VectorSet::value_type is std::set<size_t>, the forward sparsity pattern for all of the variables on the tape is stored in for_jac_sparse_set__. In this case for_jac_sparse_set_.n_set() == total_num_var_ for_jac_sparse_set_.end() == q for_jac_sparse_pack_.n_set() == 0 for_jac_sparse_pack_.end() == 0
Definition at line 586 of file for_sparse_jac.hpp.