416 lines
14 KiB
PHP
416 lines
14 KiB
PHP
<?php
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require_once "../Matrix.php";
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class TestMatrix {
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function TestMatrix() {
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// define test variables
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$errorCount = 0;
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$warningCount = 0;
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$columnwise = array(1.,2.,3.,4.,5.,6.,7.,8.,9.,10.,11.,12.);
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$rowwise = array(1.,4.,7.,10.,2.,5.,8.,11.,3.,6.,9.,12.);
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$avals = array(array(1.,4.,7.,10.),array(2.,5.,8.,11.),array(3.,6.,9.,12.));
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$rankdef = $avals;
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$tvals = array(array(1.,2.,3.),array(4.,5.,6.),array(7.,8.,9.),array(10.,11.,12.));
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$subavals = array(array(5.,8.,11.),array(6.,9.,12.));
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$rvals = array(array(1.,4.,7.),array(2.,5.,8.,11.),array(3.,6.,9.,12.));
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$pvals = array(array(1.,1.,1.),array(1.,2.,3.),array(1.,3.,6.));
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$ivals = array(array(1.,0.,0.,0.),array(0.,1.,0.,0.),array(0.,0.,1.,0.));
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$evals = array(array(0.,1.,0.,0.),array(1.,0.,2.e-7,0.),array(0.,-2.e-7,0.,1.),array(0.,0.,1.,0.));
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$square = array(array(166.,188.,210.),array(188.,214.,240.),array(210.,240.,270.));
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$sqSolution = array(array(13.),array(15.));
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$condmat = array(array(1.,3.),array(7.,9.));
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$rows = 3;
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$cols = 4;
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$invalidID = 5; /* should trigger bad shape for construction with val */
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$raggedr = 0; /* (raggedr,raggedc) should be out of bounds in ragged array */
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$raggedc = 4;
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$validID = 3; /* leading dimension of intended test Matrices */
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$nonconformld = 4; /* leading dimension which is valid, but nonconforming */
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$ib = 1; /* index ranges for sub Matrix */
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$ie = 2;
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$jb = 1;
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$je = 3;
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$rowindexset = array(1,2);
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$badrowindexset = array(1,3);
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$columnindexset = array(1,2,3);
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$badcolumnindexset = array(1,2,4);
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$columnsummax = 33.;
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$rowsummax = 30.;
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$sumofdiagonals = 15;
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$sumofsquares = 650;
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/**
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* Test matrix methods
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*/
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/**
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* Constructors and constructor-like methods:
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*
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* Matrix(double[], int)
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* Matrix(double[][])
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* Matrix(int, int)
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* Matrix(int, int, double)
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* Matrix(int, int, double[][])
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* constructWithCopy(double[][])
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* random(int,int)
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* identity(int)
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*/
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echo "<p>Testing constructors and constructor-like methods...</p>";
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$A = new Matrix($columnwise, 3);
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if($A instanceof Matrix) {
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$this->try_success("Column-packed constructor...");
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} else
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$errorCount = $this->try_failure($errorCount, "Column-packed constructor...", "Unable to construct Matrix");
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$T = new Matrix($tvals);
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if($T instanceof Matrix)
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$this->try_success("2D array constructor...");
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else
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$errorCount = $this->try_failure($errorCount, "2D array constructor...", "Unable to construct Matrix");
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$A = new Matrix($columnwise, $validID);
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$B = new Matrix($avals);
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$tmp = $B->get(0,0);
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$avals[0][0] = 0.0;
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$C = $B->minus($A);
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$avals[0][0] = $tmp;
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$B = Matrix::constructWithCopy($avals);
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$tmp = $B->get(0,0);
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$avals[0][0] = 0.0;
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/** check that constructWithCopy behaves properly **/
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if ( ( $tmp - $B->get(0,0) ) != 0.0 )
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$errorCount = $this->try_failure($errorCount,"constructWithCopy... ","copy not effected... data visible outside");
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else
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$this->try_success("constructWithCopy... ","");
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$I = new Matrix($ivals);
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if ( $this->checkMatrices($I,Matrix::identity(3,4)) )
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$this->try_success("identity... ","");
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else
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$errorCount = $this->try_failure($errorCount,"identity... ","identity Matrix not successfully created");
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/**
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* Access Methods:
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*
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* getColumnDimension()
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* getRowDimension()
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* getArray()
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* getArrayCopy()
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* getColumnPackedCopy()
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* getRowPackedCopy()
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* get(int,int)
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* getMatrix(int,int,int,int)
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* getMatrix(int,int,int[])
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* getMatrix(int[],int,int)
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* getMatrix(int[],int[])
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* set(int,int,double)
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* setMatrix(int,int,int,int,Matrix)
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* setMatrix(int,int,int[],Matrix)
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* setMatrix(int[],int,int,Matrix)
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* setMatrix(int[],int[],Matrix)
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*/
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print "<p>Testing access methods...</p>";
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$B = new Matrix($avals);
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if($B->getRowDimension() == $rows)
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$this->try_success("getRowDimension...");
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else
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$errorCount = $this->try_failure($errorCount, "getRowDimension...");
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if($B->getColumnDimension() == $cols)
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$this->try_success("getColumnDimension...");
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else
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$errorCount = $this->try_failure($errorCount, "getColumnDimension...");
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$barray = $B->getArray();
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if($this->checkArrays($barray, $avals))
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$this->try_success("getArray...");
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else
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$errorCount = $this->try_failure($errorCount, "getArray...");
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$bpacked = $B->getColumnPackedCopy();
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if($this->checkArrays($bpacked, $columnwise))
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$this->try_success("getColumnPackedCopy...");
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else
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$errorCount = $this->try_failure($errorCount, "getColumnPackedCopy...");
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$bpacked = $B->getRowPackedCopy();
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if($this->checkArrays($bpacked, $rowwise))
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$this->try_success("getRowPackedCopy...");
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else
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$errorCount = $this->try_failure($errorCount, "getRowPackedCopy...");
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/**
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* Array-like methods:
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* minus
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* minusEquals
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* plus
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* plusEquals
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* arrayLeftDivide
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* arrayLeftDivideEquals
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* arrayRightDivide
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* arrayRightDivideEquals
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* arrayTimes
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* arrayTimesEquals
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* uminus
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*/
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print "<p>Testing array-like methods...</p>";
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/**
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* I/O methods:
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* read
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* print
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* serializable:
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* writeObject
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* readObject
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*/
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print "<p>Testing I/O methods...</p>";
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/**
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* Test linear algebra methods
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*/
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echo "<p>Testing linear algebra methods...<p>";
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$A = new Matrix($columnwise, 3);
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if( $this->checkMatrices($A->transpose(), $T) )
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$this->try_success("Transpose check...");
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else
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$errorCount = $this->try_failure($errorCount, "Transpose check...", "Matrices are not equal");
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if($this->checkScalars($A->norm1(), $columnsummax))
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$this->try_success("Maximum column sum...");
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else
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$errorCount = $this->try_failure($errorCount, "Maximum column sum...", "Incorrect: " . $A->norm1() . " != " . $columnsummax);
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if($this->checkScalars($A->normInf(), $rowsummax))
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$this->try_success("Maximum row sum...");
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else
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$errorCount = $this->try_failure($errorCount, "Maximum row sum...", "Incorrect: " . $A->normInf() . " != " . $rowsummax );
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if($this->checkScalars($A->normF(), sqrt($sumofsquares)))
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$this->try_success("Frobenius norm...");
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else
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$errorCount = $this->try_failure($errorCount, "Frobenius norm...", "Incorrect:" . $A->normF() . " != " . sqrt($sumofsquares));
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if($this->checkScalars($A->trace(), $sumofdiagonals))
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$this->try_success("Matrix trace...");
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else
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$errorCount = $this->try_failure($errorCount, "Matrix trace...", "Incorrect: " . $A->trace() . " != " . $sumofdiagonals);
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$B = $A->getMatrix(0, $A->getRowDimension(), 0, $A->getRowDimension());
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if( $B->det() == 0 )
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$this->try_success("Matrix determinant...");
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else
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$errorCount = $this->try_failure($errorCount, "Matrix determinant...", "Incorrect: " . $B->det() . " != " . 0);
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$A = new Matrix($columnwise,3);
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$SQ = new Matrix($square);
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if ($this->checkMatrices($SQ, $A->times($A->transpose())))
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$this->try_success("times(Matrix)...");
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else {
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$errorCount = $this->try_failure($errorCount, "times(Matrix)...", "Unable to multiply matrices");
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$SQ->toHTML();
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$AT->toHTML();
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}
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$A = new Matrix($columnwise, 4);
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$QR = $A->qr();
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$R = $QR->getR();
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$Q = $QR->getQ();
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if($this->checkMatrices($A, $Q->times($R)))
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$this->try_success("QRDecomposition...","");
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else
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$errorCount = $this->try_failure($errorCount,"QRDecomposition...","incorrect qr decomposition calculation");
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$A = new Matrix($columnwise, 4);
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$SVD = $A->svd();
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$U = $SVD->getU();
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$S = $SVD->getS();
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$V = $SVD->getV();
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if ($this->checkMatrices($A, $U->times($S->times($V->transpose()))))
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$this->try_success("SingularValueDecomposition...","");
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else
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$errorCount = $this->try_failure($errorCount,"SingularValueDecomposition...","incorrect singular value decomposition calculation");
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$n = $A->getColumnDimension();
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$A = $A->getMatrix(0,$n-1,0,$n-1);
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$A->set(0,0,0.);
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$LU = $A->lu();
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$L = $LU->getL();
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if ( $this->checkMatrices($A->getMatrix($LU->getPivot(),0,$n-1), $L->times($LU->getU())) )
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$this->try_success("LUDecomposition...","");
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else
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$errorCount = $this->try_failure($errorCount,"LUDecomposition...","incorrect LU decomposition calculation");
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$X = $A->inverse();
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if ( $this->checkMatrices($A->times($X),Matrix::identity(3,3)) )
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$this->try_success("inverse()...","");
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else
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$errorCount = $this->try_failure($errorCount, "inverse()...","incorrect inverse calculation");
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$DEF = new Matrix($rankdef);
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if($this->checkScalars($DEF->rank(), min($DEF->getRowDimension(), $DEF->getColumnDimension())-1))
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$this->try_success("Rank...");
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else
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$this->try_failure("Rank...", "incorrect rank calculation");
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$B = new Matrix($condmat);
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$SVD = $B->svd();
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$singularvalues = $SVD->getSingularValues();
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if($this->checkScalars($B->cond(), $singularvalues[0]/$singularvalues[min($B->getRowDimension(), $B->getColumnDimension())-1]))
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$this->try_success("Condition number...");
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else
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$this->try_failure("Condition number...", "incorrect condition number calculation");
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$SUB = new Matrix($subavals);
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$O = new Matrix($SUB->getRowDimension(),1,1.0);
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$SOL = new Matrix($sqSolution);
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$SQ = $SUB->getMatrix(0,$SUB->getRowDimension()-1,0,$SUB->getRowDimension()-1);
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if ( $this->checkMatrices($SQ->solve($SOL),$O) )
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$this->try_success("solve()...","");
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else
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$errorCount = $this->try_failure($errorCount,"solve()...","incorrect lu solve calculation");
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$A = new Matrix($pvals);
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$Chol = $A->chol();
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$L = $Chol->getL();
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if ( $this->checkMatrices($A, $L->times($L->transpose())) )
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$this->try_success("CholeskyDecomposition...","");
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else
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$errorCount = $this->try_failure($errorCount,"CholeskyDecomposition...","incorrect Cholesky decomposition calculation");
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$X = $Chol->solve(Matrix::identity(3,3));
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if ( $this->checkMatrices($A->times($X), Matrix::identity(3,3)) )
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$this->try_success("CholeskyDecomposition solve()...","");
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else
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$errorCount = $this->try_failure($errorCount,"CholeskyDecomposition solve()...","incorrect Choleskydecomposition solve calculation");
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$Eig = $A->eig();
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$D = $Eig->getD();
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$V = $Eig->getV();
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if( $this->checkMatrices($A->times($V),$V->times($D)) )
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$this->try_success("EigenvalueDecomposition (symmetric)...","");
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else
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$errorCount = $this->try_failure($errorCount,"EigenvalueDecomposition (symmetric)...","incorrect symmetric Eigenvalue decomposition calculation");
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$A = new Matrix($evals);
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$Eig = $A->eig();
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$D = $Eig->getD();
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$V = $Eig->getV();
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if ( $this->checkMatrices($A->times($V),$V->times($D)) )
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$this->try_success("EigenvalueDecomposition (nonsymmetric)...","");
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else
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$errorCount = $this->try_failure($errorCount,"EigenvalueDecomposition (nonsymmetric)...","incorrect nonsymmetric Eigenvalue decomposition calculation");
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print("<b>{$errorCount} total errors</b>.");
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}
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/**
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* Print appropriate messages for successful outcome try
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* @param string $s
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* @param string $e
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*/
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function try_success($s, $e = "") {
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print "> ". $s ."success<br />";
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if ($e != "")
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print "> Message: ". $e ."<br />";
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}
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/**
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* Print appropriate messages for unsuccessful outcome try
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* @param int $count
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* @param string $s
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* @param string $e
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* @return int incremented counter
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*/
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function try_failure($count, $s, $e="") {
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print "> ". $s ."*** failure ***<br />> Message: ". $e ."<br />";
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return ++$count;
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}
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/**
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* Print appropriate messages for unsuccessful outcome try
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* @param int $count
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* @param string $s
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* @param string $e
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* @return int incremented counter
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*/
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function try_warning($count, $s, $e="") {
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print "> ". $s ."*** warning ***<br />> Message: ". $e ."<br />";
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return ++$count;
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}
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/**
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* Check magnitude of difference of "scalars".
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* @param float $x
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* @param float $y
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*/
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function checkScalars($x, $y) {
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$eps = pow(2.0,-52.0);
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if ($x == 0 & abs($y) < 10*$eps) return;
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if ($y == 0 & abs($x) < 10*$eps) return;
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if (abs($x-$y) > 10 * $eps * max(abs($x),abs($y)))
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return false;
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else
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return true;
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}
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/**
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* Check norm of difference of "vectors".
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* @param float $x[]
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* @param float $y[]
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*/
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function checkVectors($x, $y) {
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$nx = count($x);
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$ny = count($y);
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if ($nx == $ny)
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for($i=0; $i < $nx; ++$i)
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$this->checkScalars($x[$i],$y[$i]);
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else
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die("Attempt to compare vectors of different lengths");
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}
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/**
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* Check norm of difference of "arrays".
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* @param float $x[][]
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* @param float $y[][]
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*/
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function checkArrays($x, $y) {
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$A = new Matrix($x);
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$B = new Matrix($y);
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return $this->checkMatrices($A,$B);
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}
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/**
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* Check norm of difference of "matrices".
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* @param matrix $X
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* @param matrix $Y
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*/
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function checkMatrices($X = null, $Y = null) {
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if( $X == null || $Y == null )
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return false;
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$eps = pow(2.0,-52.0);
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if ($X->norm1() == 0. & $Y->norm1() < 10*$eps) return true;
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if ($Y->norm1() == 0. & $X->norm1() < 10*$eps) return true;
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$A = $X->minus($Y);
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if ($A->norm1() > 1000 * $eps * max($X->norm1(),$Y->norm1()))
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die("The norm of (X-Y) is too large: ".$A->norm1());
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else
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return true;
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}
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}
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$test = new TestMatrix;
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?>
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