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| author |  Gael Guennebaud <g.gael@free.fr> | 2012-09-27 09:37:05 +0200 |
|---|---|---|
| committer | Gael Guennebaud <g.gael@free.fr> | 2012-09-27 09:37:05 +0200 |
| commit | 8b83e66906d9e52047137c0e45fc81076f915e13 (patch) | |
| tree | 4e5b650050072d417d844697ba5ded7ff7418f08 /Eigen/src/Core/DiagonalMatrix.h | |
| parent | 1b004d579469e83d0af607e9083c680c55025694 (diff) | |
add scalar multiple to diagonal matrices
(transplanted from dc5b335f9fbc25b15a408d8b1458a0140c0a8248
)
Diffstat (limited to 'Eigen/src/Core/DiagonalMatrix.h')
| -rw-r--r-- | Eigen/src/Core/DiagonalMatrix.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Eigen/src/Core/DiagonalMatrix.h b/Eigen/src/Core/DiagonalMatrix.h index f27ab798a..da0264b0e 100644 --- a/Eigen/src/Core/DiagonalMatrix.h +++ b/Eigen/src/Core/DiagonalMatrix.h @@ -20,6 +20,7 @@ class DiagonalBase : public EigenBase<Derived> public: typedef typename internal::traits<Derived>::DiagonalVectorType DiagonalVectorType; typedef typename DiagonalVectorType::Scalar Scalar; + typedef typename DiagonalVectorType::RealScalar RealScalar; typedef typename internal::traits<Derived>::StorageKind StorageKind; typedef typename internal::traits<Derived>::Index Index; @@ -65,6 +66,17 @@ class DiagonalBase : public EigenBase<Derived> return diagonal().cwiseInverse(); } + inline const DiagonalWrapper<const CwiseUnaryOp<internal::scalar_multiple_op<Scalar>, const DiagonalVectorType> > + operator*(const Scalar& scalar) const + { + return diagonal() * scalar; + } + friend inline const DiagonalWrapper<const CwiseUnaryOp<internal::scalar_multiple_op<Scalar>, const DiagonalVectorType> > + operator*(const Scalar& scalar, const DiagonalBase& other) + { + return other.diagonal() * scalar; + } + #ifdef EIGEN2_SUPPORT template<typename OtherDerived> bool isApprox(const DiagonalBase<OtherDerived>& other, typename NumTraits<Scalar>::Real precision = NumTraits<Scalar>::dummy_precision()) const |