Squashed 'third_party/eigen/' content from commit 61d72f6
Change-Id: Iccc90fa0b55ab44037f018046d2fcffd90d9d025
git-subtree-dir: third_party/eigen
git-subtree-split: 61d72f6383cfa842868c53e30e087b0258177257
diff --git a/unsupported/doc/examples/MatrixSine.cpp b/unsupported/doc/examples/MatrixSine.cpp
new file mode 100644
index 0000000..9eea9a0
--- /dev/null
+++ b/unsupported/doc/examples/MatrixSine.cpp
@@ -0,0 +1,20 @@
+#include <unsupported/Eigen/MatrixFunctions>
+#include <iostream>
+
+using namespace Eigen;
+
+int main()
+{
+ MatrixXd A = MatrixXd::Random(3,3);
+ std::cout << "A = \n" << A << "\n\n";
+
+ MatrixXd sinA = A.sin();
+ std::cout << "sin(A) = \n" << sinA << "\n\n";
+
+ MatrixXd cosA = A.cos();
+ std::cout << "cos(A) = \n" << cosA << "\n\n";
+
+ // The matrix functions satisfy sin^2(A) + cos^2(A) = I,
+ // like the scalar functions.
+ std::cout << "sin^2(A) + cos^2(A) = \n" << sinA*sinA + cosA*cosA << "\n\n";
+}