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sparse module: new API proposal for triangular solves and experimental

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solver support with a sparse matrix as the rhs.
This commit is contained in:
Gael Guennebaud
2009-04-05 16:30:10 +00:00
parent 5a628567b0
commit 5b1d0cebc5
13 changed files with 335 additions and 64 deletions
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15
Eigen/src/Sparse/AmbiVector.h
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@@ -36,7 +36,7 @@ template<typename _Scalar> class AmbiVector
typedef _Scalar Scalar;
typedef typename NumTraits<Scalar>::Real RealScalar;
AmbiVector(int size)
: m_buffer(0), m_size(0), m_allocatedSize(0), m_allocatedElements(0), m_mode(-1)
: m_buffer(0), m_zero(0), m_size(0), m_allocatedSize(0), m_allocatedElements(0), m_mode(-1)
{
resize(size);
}
@@ -44,7 +44,7 @@ template<typename _Scalar> class AmbiVector
void init(RealScalar estimatedDensity);
void init(int mode);
void nonZeros() const;
int nonZeros() const;
/** Specifies a sub-vector to work on */
void setBounds(int start, int end) { m_start = start; m_end = end; }
@@ -53,7 +53,7 @@ template<typename _Scalar> class AmbiVector
void restart();
Scalar& coeffRef(int i);
Scalar coeff(int i);
Scalar& coeff(int i);
class Iterator;
@@ -112,6 +112,7 @@ template<typename _Scalar> class AmbiVector
// used to store data in both mode
Scalar* m_buffer;
Scalar m_zero;
int m_size;
int m_start;
int m_end;
@@ -131,7 +132,7 @@ template<typename _Scalar> class AmbiVector
/** \returns the number of non zeros in the current sub vector */
template<typename Scalar>
void AmbiVector<Scalar>::nonZeros() const
int AmbiVector<Scalar>::nonZeros() const
{
if (m_mode==IsSparse)
return m_llSize;
@@ -254,7 +255,7 @@ Scalar& AmbiVector<Scalar>::coeffRef(int i)
}
template<typename Scalar>
Scalar AmbiVector<Scalar>::coeff(int i)
Scalar& AmbiVector<Scalar>::coeff(int i)
{
if (m_mode==IsDense)
return m_buffer[i];
@@ -264,7 +265,7 @@ Scalar AmbiVector<Scalar>::coeff(int i)
ei_assert(m_mode==IsSparse);
if ((m_llSize==0) || (i<llElements[m_llStart].index))
{
return Scalar(0);
return m_zero;
}
else
{
@@ -275,7 +276,7 @@ Scalar AmbiVector<Scalar>::coeff(int i)
if (llElements[elid].index==i)
return llElements[m_llCurrent].value;
else
return Scalar(0);
return m_zero;
}
}
}