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* make the _Flags template parameter of Matrix default to the corrected

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flags. This ensures that unless explicitly messed up otherwise,
  a Matrix type is equal to its own Eval type. This seriously reduces
  the number of types instantiated. Measured +13% compile speed, -7%
  binary size.

* Improve doc of Matrix template parameters.
This commit is contained in:
Benoit Jacob
2008-06-13 07:53:45 +00:00
parent e3fac69f19
commit c90c77051f
5 changed files with 62 additions and 36 deletions
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20
Eigen/src/Core/Matrix.h
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@@ -35,7 +35,15 @@
* specify that the number of rows is dynamic, i.e. is not fixed at compile-time.
* \param _Cols the number of columns at compile-time. Use the special value \a Dynamic to
* specify that the number of columns is dynamic, i.e. is not fixed at compile-time.
* \param _SuggestedFlags allows to control certain features such as storage order. See MatrixBase::Flags.
* \param _MaxRows the maximum number of rows at compile-time. By default this is equal to \a _Rows.
* The most common exception is when you don't know the exact number of rows, but know that
* it is smaller than some given value. Then you can set \a _MaxRows to that value, and set
* _Rows to \a Dynamic.
* \param _MaxCols the maximum number of cols at compile-time. By default this is equal to \a _Cols.
* The most common exception is when you don't know the exact number of cols, but know that
* it is smaller than some given value. Then you can set \a _MaxCols to that value, and set
* _Cols to \a Dynamic.
* \param _Flags allows to control certain features such as storage order. See the \ref flags "list of flags".
*
* This single class template covers all kinds of matrix and vectors that Eigen can handle.
* All matrix and vector types are just typedefs to specializations of this class template.
@@ -70,8 +78,8 @@
*
* Note that most of the API is in the base class MatrixBase.
*/
template<typename _Scalar, int _Rows, int _Cols, unsigned int _SuggestedFlags, int _MaxRows, int _MaxCols>
struct ei_traits<Matrix<_Scalar, _Rows, _Cols, _SuggestedFlags, _MaxRows, _MaxCols> >
template<typename _Scalar, int _Rows, int _Cols, int _MaxRows, int _MaxCols, unsigned int _Flags>
struct ei_traits<Matrix<_Scalar, _Rows, _Cols, _MaxRows, _MaxCols, _Flags> >
{
typedef _Scalar Scalar;
enum {
@@ -79,13 +87,13 @@ struct ei_traits<Matrix<_Scalar, _Rows, _Cols, _SuggestedFlags, _MaxRows, _MaxCo
ColsAtCompileTime = _Cols,
MaxRowsAtCompileTime = _MaxRows,
MaxColsAtCompileTime = _MaxCols,
Flags = ei_corrected_matrix_flags<_Scalar, ei_size_at_compile_time<_MaxRows,_MaxCols>::ret, _SuggestedFlags>::ret,
Flags = _Flags,
CoeffReadCost = NumTraits<Scalar>::ReadCost
};
};
template<typename _Scalar, int _Rows, int _Cols, unsigned int _Flags, int _MaxRows, int _MaxCols>
class Matrix : public MatrixBase<Matrix<_Scalar, _Rows, _Cols, _Flags, _MaxRows, _MaxCols> >
template<typename _Scalar, int _Rows, int _Cols, int _MaxRows, int _MaxCols, unsigned int _Flags>
class Matrix : public MatrixBase<Matrix<_Scalar, _Rows, _Cols, _MaxRows, _MaxCols, _Flags> >
{
public: