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This commit is contained in:
Gael Guennebaud
2009-07-28 17:35:07 +02:00
parent 264fe82c65 562864bcfb
commit 54804eb626
19 changed files with 623 additions and 199 deletions
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22
Eigen/src/Cholesky/LDLT.h
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@@ -62,7 +62,7 @@ template<typename MatrixType> class LDLT
typedef Matrix<int, MatrixType::RowsAtCompileTime, 1> IntColVectorType;
typedef Matrix<int, 1, MatrixType::RowsAtCompileTime> IntRowVectorType;
/**
/**
* \brief Default Constructor.
*
* The default constructor is useful in cases in which the user intends to
@@ -83,7 +83,7 @@ template<typename MatrixType> class LDLT
inline TriangularView<MatrixType, UnitLowerTriangular> matrixL(void) const
{
ei_assert(m_isInitialized && "LDLT is not initialized.");
return m_matrix;
return m_matrix;
}
/** \returns a vector of integers, whose size is the number of rows of the matrix being decomposed,
@@ -97,24 +97,24 @@ template<typename MatrixType> class LDLT
}
/** \returns the coefficients of the diagonal matrix D */
inline Diagonal<MatrixType,0> vectorD(void) const
{
inline Diagonal<MatrixType,0> vectorD(void) const
{
ei_assert(m_isInitialized && "LDLT is not initialized.");
return m_matrix.diagonal();
return m_matrix.diagonal();
}
/** \returns true if the matrix is positive (semidefinite) */
inline bool isPositive(void) const
{
inline bool isPositive(void) const
{
ei_assert(m_isInitialized && "LDLT is not initialized.");
return m_sign == 1;
return m_sign == 1;
}
/** \returns true if the matrix is negative (semidefinite) */
inline bool isNegative(void) const
{
inline bool isNegative(void) const
{
ei_assert(m_isInitialized && "LDLT is not initialized.");
return m_sign == -1;
return m_sign == -1;
}
template<typename RhsDerived, typename ResultType>