ru.sscc.matrix
Interface RealAlgebraicMatrix

All Known Implementing Classes:

RealMatrix, TransposedMatrix

public interface RealAlgebraicMatrix

extends Matrix

An algebraic matrix interface describes matrix by vector multiplication methods. A matrix is always the left multiple (in normal or transposed form) and a column-vector is always the right multiple.

Method Summary

void	multiply(RealVector source, RealVector target) Multiplies the matrix by a column-vector.
void	multiplyT(RealVector source, RealVector target) Multiplies the transposed matrix by a column-vector.
double	relativeAccuracy() Returns the matrix entries relative accuracy: the smallest value e such that 1+e isn't equal to 1 for the data type used for the matrix entries.

Methods inherited from interface ru.sscc.matrix.Matrix

columnsNumber, rowsNumber

Method Detail

relativeAccuracy

public double relativeAccuracy()

Returns the matrix entries relative accuracy: the smallest value e such that 1+e isn't equal to 1 for the data type used for the matrix entries.

multiply

public void multiply(RealVector source,
                     RealVector target)
              throws java.lang.IllegalStateException

Multiplies the matrix by a column-vector.

Parameters:

source - a source vector to multiply

target - a target vector to write the result

Throws:

java.lang.IllegalStateException - is thrown when the matrix isn't algebraic

multiplyT

public void multiplyT(RealVector source,
                      RealVector target)
               throws java.lang.IllegalStateException

Multiplies the transposed matrix by a column-vector.

Parameters:

source - a source vector to multiply

target - a target vector to write the result

Throws:

java.lang.IllegalStateException - is thrown when the matrix isn't algebraic