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Forgot to 'hg add' example file in last commit.

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Jitse Niesen 2011-05-10 09:59:58 +01:00
parent d7e3c949be
commit 0c463a21c4
2 changed files with 17 additions and 1 deletions
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2
unsupported/Eigen/MatrixFunctions
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@ -310,7 +310,7 @@ cut.
The computation is the same as in the real case, except that the
complex Schur decomposition is used to reduce the matrix to a
triangular matrix. The theoretical cost is the same. Details are in:
Åke Björck and Scen Hammarling, "A Schur method for the
Åke Björck and Sven Hammarling, "A Schur method for the
square root of a matrix", <em>Linear Algebra Appl.</em>,
52/53:127&ndash;140, 1983.

16
unsupported/doc/examples/MatrixSquareRoot.cpp Normal file
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@ -0,0 +1,16 @@
#include <unsupported/Eigen/MatrixFunctions>
#include <iostream>
using namespace Eigen;
int main()
{
const double pi = std::acos(-1.0);
MatrixXd A(2,2);
A << cos(pi/3), -sin(pi/3),
sin(pi/3), cos(pi/3);
std::cout << "The matrix A is:\n" << A << "\n\n";
std::cout << "The matrix square root of A is:\n" << A.sqrt() << "\n\n";
std::cout << "The square of the last matrix is:\n" << A.sqrt() * A.sqrt() << "\n";
}