class_FixedVectorBlock.cpp
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00001 #include <Eigen/Core>
00002 #include <iostream>
00003 using namespace Eigen;
00004 using namespace std;
00005 
00006 template<typename Derived>
00007 Eigen::VectorBlock<Derived, 2>
00008 firstTwo(MatrixBase<Derived>& v)
00009 {
00010   return Eigen::VectorBlock<Derived, 2>(v.derived(), 0);
00011 }
00012 
00013 template<typename Derived>
00014 const Eigen::VectorBlock<const Derived, 2>
00015 firstTwo(const MatrixBase<Derived>& v)
00016 {
00017   return Eigen::VectorBlock<const Derived, 2>(v.derived(), 0);
00018 }
00019 
00020 int main(int, char**)
00021 {
00022   Matrix<int,1,6> v; v << 1,2,3,4,5,6;
00023   cout << firstTwo(4*v) << endl; // calls the const version
00024   firstTwo(v) *= 2;              // calls the non-const version
00025   cout << "Now the vector v is:" << endl << v << endl;
00026   return 0;
00027 }


libicr
Author(s): Robert Krug
autogenerated on Mon Jan 6 2014 11:32:34