diff options
Diffstat (limited to 'Eigen/src/Eigenvalues/ComplexSchur.h')
| -rw-r--r-- | Eigen/src/Eigenvalues/ComplexSchur.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/Eigen/src/Eigenvalues/ComplexSchur.h b/Eigen/src/Eigenvalues/ComplexSchur.h index 62cbbb14f..e5466132b 100644 --- a/Eigen/src/Eigenvalues/ComplexSchur.h +++ b/Eigen/src/Eigenvalues/ComplexSchur.h @@ -258,10 +258,11 @@ inline bool ComplexSchur<MatrixType>::subdiagonalEntryIsNeglegible(Index i) template<typename MatrixType> typename ComplexSchur<MatrixType>::ComplexScalar ComplexSchur<MatrixType>::computeShift(Index iu, Index iter) { + using std::abs; if (iter == 10 || iter == 20) { // exceptional shift, taken from http://www.netlib.org/eispack/comqr.f - return internal::abs(internal::real(m_matT.coeff(iu,iu-1))) + internal::abs(internal::real(m_matT.coeff(iu-1,iu-2))); + return abs(internal::real(m_matT.coeff(iu,iu-1))) + abs(internal::real(m_matT.coeff(iu-1,iu-2))); } // compute the shift as one of the eigenvalues of t, the 2x2 |