diff options
author | Gael Guennebaud <g.gael@free.fr> | 2008-03-03 10:52:44 +0000 |
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committer | Gael Guennebaud <g.gael@free.fr> | 2008-03-03 10:52:44 +0000 |
commit | 255689231d4267d8a254fef5b59162d92c3cab4d (patch) | |
tree | 6c25e2c7c104313b34d23cb5a8076c40eb834709 /doc/examples/class_CwiseBinaryOp.cpp | |
parent | ed20f64d6810158f9a75d4dfe5d59586f58ac563 (diff) |
* Added generic unary operators (replace Opposite and Conjugate)
* functor templates are not template template parameter anymore
(this allows to make templated functors !)
* Main page: extented compiler discussion
* A small hack to support gcc 3.4 and 4.0 (see the main page)
* Fix a cast type issue in Cast
* Various doxygen updates (mainly Cwise stuff and added doxygen groups
in MatrixBase to split the huge memeber list, still not perfect though)
* Updated Gael's email address
Diffstat (limited to 'doc/examples/class_CwiseBinaryOp.cpp')
-rw-r--r-- | doc/examples/class_CwiseBinaryOp.cpp | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/doc/examples/class_CwiseBinaryOp.cpp b/doc/examples/class_CwiseBinaryOp.cpp new file mode 100644 index 000000000..2a0f11a75 --- /dev/null +++ b/doc/examples/class_CwiseBinaryOp.cpp @@ -0,0 +1,27 @@ +#include <Eigen/Core> +USING_PART_OF_NAMESPACE_EIGEN +using namespace std; + +// define a custom template binary functor +struct CwiseMinOp { + template<typename Scalar> + static Scalar op(const Scalar& a, const Scalar& b) { return std::min(a,b); } +}; + +// define a custom binary operator between two matrices +template<typename Scalar, typename Derived1, typename Derived2> +const Eigen::CwiseBinaryOp<CwiseMinOp, Derived1, Derived2> +cwiseMin(const MatrixBase<Scalar, Derived1> &mat1, const MatrixBase<Scalar, Derived2> &mat2) +{ + return Eigen::CwiseBinaryOp<CwiseMinOp, Derived1, Derived2>(mat1.ref(), mat2.ref()); + // Note that the above is equivalent to: + // return mat1.template cwise<CwiseMinOp>(mat2); +} + +int main(int, char**) +{ + Matrix4d m1 = Matrix4d::random(), m2 = Matrix4d::random(); + cout << cwiseMin(m1,m2) << endl; // use our new global operator + cout << m1.cwise<CwiseMinOp>(m2) << endl; // directly use the generic expression member + return 0; +} |