aboutsummaryrefslogtreecommitdiff
path: root/doc/snippets/TopicAliasing_cwise.cpp
diff options
context:
space:
mode:
authorJim Guggemos <jimg@google.com>2012-12-04 16:46:41 -0700
committerJim Guggemos <jimg@google.com>2012-12-04 17:08:38 -0700
commitb015e75e8c7ba1ab4ddb91e9372a57e76f3fd159 (patch)
tree54d1c7d66098154c1d7c5bd414394ef4cf255810 /doc/snippets/TopicAliasing_cwise.cpp
parent63f67d748682b46d58be31235a0a2d64d81b998c (diff)
parentc981c48f5bc9aefeffc0bcb0cc3934c2fae179dd (diff)
downloadeigen-b015e75e8c7ba1ab4ddb91e9372a57e76f3fd159.tar.gz
Change-Id: Ic9004531328145ea36ba513bb96a23595427f6a4
Diffstat (limited to 'doc/snippets/TopicAliasing_cwise.cpp')
-rw-r--r--doc/snippets/TopicAliasing_cwise.cpp20
1 files changed, 20 insertions, 0 deletions
diff --git a/doc/snippets/TopicAliasing_cwise.cpp b/doc/snippets/TopicAliasing_cwise.cpp
new file mode 100644
index 000000000..7049f6c56
--- /dev/null
+++ b/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;