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Workaround MSVC bug

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This commit is contained in:
Gael Guennebaud 2016-07-11 15:24:52 +02:00
parent 131ee4bb8e
commit 3e348fdcf9
1 changed files with 4 additions and 2 deletions
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6
Eigen/src/Eigenvalues/GeneralizedEigenSolver.h
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@ -310,6 +310,7 @@ GeneralizedEigenSolver<MatrixType>::compute(const MatrixType& A, const MatrixTyp
if (m_realQZ.info() == Success)
{
m_matS = m_realQZ.matrixS();
const MatrixType &matT = m_realQZ.matrixT();
if (computeEigenvectors)
m_eivec = m_realQZ.matrixZ().transpose();
@ -322,7 +323,7 @@ GeneralizedEigenSolver<MatrixType>::compute(const MatrixType& A, const MatrixTyp
if (i == A.cols() - 1 || m_matS.coeff(i+1, i) == Scalar(0))
{
m_alphas.coeffRef(i) = m_matS.coeff(i, i);
m_betas.coeffRef(i) = m_realQZ.matrixT().coeff(i,i);
m_betas.coeffRef(i) = matT.coeff(i,i);
++i;
}
else
@ -332,7 +333,8 @@ GeneralizedEigenSolver<MatrixType>::compute(const MatrixType& A, const MatrixTyp
// T = [a 0]
// [0 b]
RealScalar a = m_realQZ.matrixT().coeff(i, i), b = m_realQZ.matrixT().coeff(i+1, i+1);
RealScalar a = matT.coeff(i, i),
b = matT(i+1, i+1); // NOTE: using operator() instead of coeff() workarounds a MSVC bug.
Matrix<RealScalar,2,2> S2 = m_matS.template block<2,2>(i,i) * Matrix<Scalar,2,1>(b,a).asDiagonal();
Scalar p = Scalar(0.5) * (S2.coeff(0,0) - S2.coeff(1,1));