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constant Diagonal ---> DiagonalBits

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introduce ei_is_diagonal to check for it
DiagonalCoeffs ---> Diagonal and allow Index to by Dynamic
-> add MatrixBase::diagonal(int) with unittest and doc
This commit is contained in:
Benoit Jacob
2009-05-10 16:24:39 +00:00
parent eac79b6d2e
commit 9afd1324fd
20 changed files with 256 additions and 203 deletions
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21
Eigen/src/Core/util/Constants.h
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@@ -140,7 +140,7 @@ const unsigned int LinearAccessBit = 0x10;
* First, references to the coefficients must be available through coeffRef(int, int). This rules out read-only
* expressions whose coefficients are computed on demand by coeff(int, int). Second, the memory layout of the
* array of coefficients must be exactly the natural one suggested by rows(), cols(), stride(), and the RowMajorBit.
* This rules out expressions such as DiagonalCoeffs, whose coefficients, though referencable, do not have
* This rules out expressions such as Diagonal, whose coefficients, though referencable, do not have
* such a regular memory layout.
*/
const unsigned int DirectAccessBit = 0x20;
@@ -186,17 +186,24 @@ const unsigned int HereditaryBits = RowMajorBit
| EvalBeforeAssigningBit
| SparseBit;
// Possible values for the Mode parameter of part() and of extract()
// diagonal means both upper and lower triangular
const unsigned DiagonalBits = UpperTriangularBit | LowerTriangularBit;
// Possible values for the Mode parameter of part()
const unsigned int UpperTriangular = UpperTriangularBit;
const unsigned int StrictlyUpperTriangular = UpperTriangularBit | ZeroDiagBit;
const unsigned int LowerTriangular = LowerTriangularBit;
const unsigned int StrictlyLowerTriangular = LowerTriangularBit | ZeroDiagBit;
const unsigned int SelfAdjoint = SelfAdjointBit;
// additional possible values for the Mode parameter of extract()
const unsigned int UnitUpperTriangular = UpperTriangularBit | UnitDiagBit;
const unsigned int UnitLowerTriangular = LowerTriangularBit | UnitDiagBit;
const unsigned int Diagonal = UpperTriangular | LowerTriangular;
template<typename T> struct ei_is_diagonal
{
enum {
ret = ( (unsigned int)(T::Flags) & DiagonalBits ) == DiagonalBits
};
};
enum { Aligned, Unaligned };
enum { ForceAligned, AsRequested };
@@ -227,10 +234,10 @@ enum {
enum {
ColMajor = 0,
RowMajor = 0x1, // it is only a coincidence that this is equal to RowMajorBit -- don't rely on that
/** \internal Don't require alignment for the matrix itself (the array of coefficients, if dynamically allocated, may still be
requested to be aligned) */
/** \internal Align the matrix itself if it is vectorizable fixed-size */
AutoAlign = 0,
/** \internal Don't require alignment for the matrix itself (the array of coefficients, if dynamically allocated, may still be
requested to be aligned) */
DontAlign = 0x2
};

2
Eigen/src/Core/util/ForwardDeclarations.h
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@@ -48,7 +48,7 @@ template<typename Lhs, typename Rhs, int ProductMode> class Product;
template<typename CoeffsVectorType, typename Derived> class DiagonalMatrixBase;
template<typename CoeffsVectorType> class DiagonalMatrixWrapper;
template<typename _Scalar, int _Size> class DiagonalMatrix;
template<typename MatrixType, int DiagId=0> class DiagonalCoeffs;
template<typename MatrixType, int Index> class Diagonal;
template<typename MatrixType, int PacketAccess = AsRequested> class Map;
template<typename MatrixType, unsigned int Mode> class Part;
template<typename MatrixType, unsigned int Mode> class Extract;