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Tridiagonalization::diagonal() and ::subDiagonal() did not work. Added unit-test

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This commit is contained in:
Christoph Hertzberg
2014-09-24 14:37:13 +02:00
parent 446001ef51
commit 27d6b4daf9
2 changed files with 14 additions and 8 deletions
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11
test/eigensolver_selfadjoint.cpp
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@@ -111,8 +111,17 @@ template<typename MatrixType> void selfadjointeigensolver(const MatrixType& m)
// test Tridiagonalization's methods
Tridiagonalization<MatrixType> tridiag(symmC);
// FIXME tridiag.matrixQ().adjoint() does not work
VERIFY_IS_APPROX(tridiag.diagonal(), tridiag.matrixT().template diagonal());
VERIFY_IS_APPROX(tridiag.subDiagonal(), tridiag.matrixT().template diagonal<-1>());
MatrixType T = tridiag.matrixT();
if(rows>1 && cols>1) {
// FIXME check that upper and lower part are 0:
//VERIFY(T.topRightCorner(rows-2, cols-2).template triangularView<Upper>().isZero());
}
VERIFY_IS_APPROX(tridiag.diagonal(), T.diagonal().real());
VERIFY_IS_APPROX(tridiag.subDiagonal(), T.template diagonal<1>().real());
VERIFY_IS_APPROX(MatrixType(symmC.template selfadjointView<Lower>()), tridiag.matrixQ() * tridiag.matrixT().eval() * MatrixType(tridiag.matrixQ()).adjoint());
VERIFY_IS_APPROX(MatrixType(symmC.template selfadjointView<Lower>()), tridiag.matrixQ() * tridiag.matrixT() * tridiag.matrixQ().adjoint());
// Test computation of eigenvalues from tridiagonal matrix
if(rows > 1)