From 44861dcbfeee041223c4aac1ee075e92fa4daa01 Mon Sep 17 00:00:00 2001 From: Stanislaw Halik Date: Sun, 18 Sep 2016 12:42:15 +0200 Subject: update --- eigen/doc/snippets/TopicAliasing_cwise.cpp | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 eigen/doc/snippets/TopicAliasing_cwise.cpp (limited to 'eigen/doc/snippets/TopicAliasing_cwise.cpp') diff --git a/eigen/doc/snippets/TopicAliasing_cwise.cpp b/eigen/doc/snippets/TopicAliasing_cwise.cpp new file mode 100644 index 0000000..7049f6c --- /dev/null +++ b/eigen/doc/snippets/TopicAliasing_cwise.cpp @@ -0,0 +1,20 @@ +MatrixXf mat(2,2); +mat << 1, 2, 4, 7; +cout << "Here is the matrix mat:\n" << mat << endl << endl; + +mat = 2 * mat; +cout << "After 'mat = 2 * mat', mat = \n" << mat << endl << endl; + + +mat = mat - MatrixXf::Identity(2,2); +cout << "After the subtraction, it becomes\n" << mat << endl << endl; + + +ArrayXXf arr = mat; +arr = arr.square(); +cout << "After squaring, it becomes\n" << arr << endl << endl; + +// Combining all operations in one statement: +mat << 1, 2, 4, 7; +mat = (2 * mat - MatrixXf::Identity(2,2)).array().square(); +cout << "Doing everything at once yields\n" << mat << endl << endl; -- cgit v1.2.3