| Brian Silverman | 72890c2 | 2015-09-19 14:37:37 -0400 | [diff] [blame^] | 1 | #include <unsupported/Eigen/MatrixFunctions> |
| 2 | #include <iostream> |
| 3 | |
| 4 | using namespace Eigen; |
| 5 | |
| 6 | std::complex<double> expfn(std::complex<double> x, int) |
| 7 | { |
| 8 | return std::exp(x); |
| 9 | } |
| 10 | |
| 11 | int main() |
| 12 | { |
| 13 | const double pi = std::acos(-1.0); |
| 14 | |
| 15 | MatrixXd A(3,3); |
| 16 | A << 0, -pi/4, 0, |
| 17 | pi/4, 0, 0, |
| 18 | 0, 0, 0; |
| 19 | |
| 20 | std::cout << "The matrix A is:\n" << A << "\n\n"; |
| 21 | std::cout << "The matrix exponential of A is:\n" |
| 22 | << A.matrixFunction(expfn) << "\n\n"; |
| 23 | } |