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Including Eigen Examples, Tests, and sparse2eigen

http://eigen.tuxfamily.org

Examples and Tests
CppAD can include the following examples and tests that use the linear algebra package Eigen:
 cppad_eigen.hpp Enable Use of Eigen Linear Algebra Package with CppAD eigen_array.cpp Using Eigen Arrays: Example and Test eigen_det.cpp Using Eigen To Compute Determinant: Example and Test sparse2eigen.cpp Converting CppAD Sparse Matrix to Eigen Format: Example and Test atomic_two_eigen_cholesky.hpp atomic_two Eigen Cholesky Factorization Class atomic_two_eigen_mat_inv.hpp atomic_two Eigen Matrix Inversion Class atomic_two_eigen_mat_mul.hpp atomic_two Eigen Matrix Multiply Class

sparse2eigen
The sparse2eigen utility will only be available if include_eigen is specified on the cmake command line.

include_eigen
If Eigen is installed on your system, you can specify include_eigen=true on the cmake command line. The value of PKG_CONFIG_PATH must be such that the command      pkg-config eigen3 --path --print-errors  finds the location of the file eigen3.pc.

eigen_prefix
With Eigen it is possible to use -D eigen_prefix=eigen_prefix on the cmake command line. In this case, the sub-directory Eigen must exist in a directory      eigen_prefix/includedir  where include_dir is one of the directories in the cmake_install_includedirs list of directories.

Examples
If you specify include_eigencmakeinclude_eigen on the cmake command line, you will be able to run the Eigen examples list above by executing the following commands starting in the distribution directory :      cd build/example     make check_example  If you do this, you will see an indication that the examples eigen_array and eigen_det have passed their correctness check.

Test Vector
If you have specified eigen_prefix you can choose      -D cppad_testvector=eigen  on the cmake command line. This we set the CppAD testvector to use Eigen vectors.

get_eigen
If you are using Unix, you can download and install a copy of Eigen using get_eigen.sh . The corresponding install prefix is build/prefix.
Input File: omh/install/eigen.omh