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* Draft of a eigenvalues solver

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(does not support complex and does not re-use the QR decomposition)

* Rewrite the cache friendly product to have only one instance per scalar type !
  This significantly speeds up compilation time and reduces executable size.
  The current drawback is that some trivial expressions might be
  evaluated like conjugate or negate.

* Renamed "cache optimal" to "cache friendly"

* Added the ability to directly access matrix data of some expressions via:
  - the stride()/_stride() methods
  - DirectAccessBit flag (replace ReferencableBit)
This commit is contained in:
Gael Guennebaud
2008-05-12 10:23:09 +00:00
parent dca416cace
commit 45cda6704a
15 changed files with 1286 additions and 364 deletions
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6
Eigen/src/Core/util/Constants.h
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@@ -43,18 +43,18 @@ const unsigned int NullDiagBit = 0x40; ///< means all diagonal coefficients
const unsigned int UnitDiagBit = 0x80; ///< means all diagonal coefficients are equal to 1
const unsigned int NullLowerBit = 0x200; ///< means the strictly triangular lower part is 0
const unsigned int NullUpperBit = 0x400; ///< means the strictly triangular upper part is 0
const unsigned int ReferencableBit = 0x800; ///< means the expression is writable through MatrixBase::coeffRef(int,int)
const unsigned int DirectAccessBit = 0x800; ///< means the underlying matrix data can be direclty accessed
enum { Upper=NullLowerBit, Lower=NullUpperBit };
enum { Aligned=0, UnAligned=1 };
// list of flags that are lost by default
const unsigned int DefaultLostFlagMask = ~(VectorizableBit | Like1DArrayBit | ReferencableBit
const unsigned int DefaultLostFlagMask = ~(VectorizableBit | Like1DArrayBit | DirectAccessBit
| NullDiagBit | UnitDiagBit | NullLowerBit | NullUpperBit);
enum { ConditionalJumpCost = 5 };
enum CornerType { TopLeft, TopRight, BottomLeft, BottomRight };
enum DirectionType { Vertical, Horizontal };
enum ProductEvaluationMode { NormalProduct, CacheOptimalProduct, LazyProduct};
enum ProductEvaluationMode { NormalProduct, CacheFriendlyProduct, LazyProduct};
#endif // EIGEN_CONSTANTS_H