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-rw-r--r--doc/tutorial.cpp12
1 files changed, 10 insertions, 2 deletions
diff --git a/doc/tutorial.cpp b/doc/tutorial.cpp
index 3b4489522..e37c245cc 100644
--- a/doc/tutorial.cpp
+++ b/doc/tutorial.cpp
@@ -5,18 +5,25 @@ using namespace Eigen;
int main(int, char **)
{
- Matrix<double,2,2> m; // 2x2 fixed-size matrix with uninitialized entries
+ Matrix<double,2,2> m, n; // 2x2 fixed-size matrix with uninitialized entries
m(0,0) = 1;
m(0,1) = 2;
m(1,0) = 3;
m(1,1) = 4;
+
+ n = m;
+ n = eval(n*n);
+ cout << n << endl;
+#if 0
cout << "Here is a 2x2 matrix m:" << endl << m << endl;
cout << "Let us now build a 4x4 matrix m2 by assembling together four 2x2 blocks." << endl;
- MatrixX<double> m2(4, 4); // dynamic matrix with initial size 4x4 and uninitialized entries
+ Matrix<double,4,4> m2; // dynamic matrix with initial size 4x4 and uninitialized entries
// notice how we are mixing fixed-size and dynamic-size types.
cout << "In the top-left block, we put the matrix m shown above." << endl;
m2.block(0,1,0,1) = m;
+ cout << "m2 is now " << endl << m2 << endl;
+ cout << "m2.block(0,1,0,1) has " << m2.block(0,1,0,1).rows() << " rows" << endl;
cout << "In the bottom-left block, we put the matrix m*m, which is:" << endl << m*m << endl;
m2.block(2,3,0,1) = m * m;
cout << "In the top-right block, we put the matrix m+m, which is:" << endl << m+m << endl;
@@ -47,5 +54,6 @@ int main(int, char **)
m = m_save;
m.alias() = m * m;
cout << "And m is now:" << endl << m << endl << "as was expected." << endl;
+#endif
return 0;
}