ScalarMatrix< Field > Class Template Reference

Blackbox for aI. More...

#include <scalar-matrix.h>

Inherits BlackboxInterface.

Public Member Functions
	ScalarMatrix ()
	Constructs an initially 0 by 0 matrix.
	ScalarMatrix (const Field &F, const size_t n, const Element &s)
	Scalar matrix Constructor from an element. More...
	ScalarMatrix (const Field &F, const size_t n, const typename Field::RandIter &iter)
	Constructor from a random element. More...
template<class OutVector , class InVector >
OutVector &	apply (OutVector &y, InVector &x) const
	Application of BlackBox matrix. More...
template<class OutVector , class InVector >
OutVector &	applyTranspose (OutVector &y, InVector &x) const
	Application of BlackBox matrix transpose. More...

Detailed Description

template<typename Field>
class LinBox::ScalarMatrix< Field >

Blackbox for aI.

Use particularly for representing 0 and I.

This is a class of blackbox square scalar matrices. Each scalar matrix occupies O(scalar-size) memory. The matrix itself is not stored in memory, just the scalar and the dimensions.

Constructor & Destructor Documentation

ScalarMatrix ( const Field &  F, const size_t  n, const Element &  s  )

inline

Scalar matrix Constructor from an element.

Parameters

F	field in which to do arithmetic.
n	size of the matrix.
s	scalar, a field element, to be used as the diagonal of the matrix.

ScalarMatrix ( const Field &  F, const size_t  n, const typename Field::RandIter &  iter  )

inline

Constructor from a random element.

Parameters

F	field in which to do arithmetic.
n	size of the matrix.
iter	Random iterator from which to get the diagonal scalar element.

Member Function Documentation

OutVector& apply ( OutVector &  y, InVector &  x  ) const

inline

Application of BlackBox matrix.

y= A*x. Requires time linear in n, the size of the matrix.

OutVector& applyTranspose ( OutVector &  y, InVector &  x  ) const

inline

Application of BlackBox matrix transpose.

y= transpose(A)*x. Requires time linear in n, the size of the matrix.

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The documentation for this class was generated from the following files:

• quad-matrix.h
• scalar-matrix.h