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1 files changed, 20 insertions, 0 deletions

diff --git a/eigen/unsupported/doc/examples/MatrixSine.cpp b/eigen/unsupported/doc/examples/MatrixSine.cpp
new file mode 100644
index 0000000..9eea9a0
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+++ b/eigen/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";
+}