/// <summary>
/// Matrix ^ scalar
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public QsMatrix PowerScalar(QsScalar value)
{
QsMatrix Total = (QsMatrix)this.Identity; //first get the identity matrix of this matrix.
int count = Qs.IntegerFromQsValue(value);
if (count > 0)
{
for (int i = 1; i <= count; i++)
{
Total = Total.MultiplyMatrix(this);
}
}
else if (count == 0)
{
return(Total); //which id identity already
}
else
{
count = Math.Abs(count);
for (int i = 1; i <= count; i++)
{
Total = Total.MultiplyMatrix(this.Inverse); //multiply the inverses many times
}
}
return(Total);
}
/// <summary>
/// Matrix - Matrix
/// </summary>
/// <param name="matrix"></param>
/// <returns></returns>
private QsMatrix SubtractMatrix(QsMatrix matrix)
{
if (this.DimensionEquals(matrix))
{
QsMatrix Total = new QsMatrix();
for (int IY = 0; IY < this.RowsCount; IY++)
{
List <QsScalar> row = new List <QsScalar>(ColumnsCount);
for (int IX = 0; IX < this.ColumnsCount; IX++)
{
row.Add(this[IY, IX] - matrix[IY, IX]);
}
Total.AddRow(row.ToArray());
}
return(Total);
}
else
{
throw new QsMatrixException("Matrix 1 [" + this.RowsCount.ToString(CultureInfo.InvariantCulture)
+ "x" + this.ColumnsCount.ToString(CultureInfo.InvariantCulture) +
"] is not dimensional equal with Matrix 2 [" + matrix.RowsCount.ToString(CultureInfo.InvariantCulture)
+ "x" + matrix.ColumnsCount.ToString(CultureInfo.InvariantCulture) + "]");
}
}
/// <summary>
/// Normal multiplication.
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public override QsValue MultiplyOperation(QsValue vl)
{
QsValue value;
if (vl is QsReference)
{
value = ((QsReference)vl).ContentValue;
}
else
{
value = vl;
}
if (value is QsScalar)
{
return(MultiplyScalar((QsScalar)value));
}
else if (value is QsVector)
{
return(this.MultiplyVector((QsVector)value));
}
else if (value is QsMatrix)
{
QsMatrix mvec = this.ToVectorMatrix().MultiplyMatrix((QsMatrix)value);
// make it vector again.
return(mvec[0]);
}
else
{
throw new NotSupportedException();
}
}
/// <summary>
///
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public override QsValue DifferentiateOperation(QsValue vl)
{
QsValue value;
if (vl is QsReference)
{
value = ((QsReference)vl).ContentValue;
}
else
{
value = vl;
}
if (value is QsScalar)
{
QsMatrix n = new QsMatrix();
foreach (var row in n.Rows)
{
n.AddRow(row.DifferentiateScalar((QsScalar)value).ToArray());
}
return(n);
}
else
{
return(base.DifferentiateOperation(value));
}
}
/// <summary>
/// Gets a specific covector as a matrix object.
/// </summary>
/// <param name="columnIndex"></param>
/// <returns></returns>
public QsMatrix GetColumnVectorMatrix(int columnIndex)
{
QsMatrix mat = new QsMatrix();
mat.AddColumnVector(GetColumnVector(columnIndex));
return(mat);
}
public QsMatrix AppendLowerMatrix(QsMatrix matrix)
{
QsMatrix m = CopyMatrix(this);
foreach (var vector in matrix)
{
m.AddVector(vector);
}
return(m);
}
/// <summary>
/// Append the target matrix right to the matrix.
/// </summary>
/// <param name="matrix"></param>
/// <returns></returns>
public QsMatrix AppendRightMatrix(QsMatrix matrix)
{
QsMatrix m = CopyMatrix(this);
foreach (var column in matrix.Columns)
{
m.AddColumnVector(column);
}
return(m);
}
/// <summary>
/// Copy the matrix into new matrix instance.
/// </summary>
/// <param name="matrix"></param>
/// <returns></returns>
public static QsMatrix CopyMatrix(QsMatrix matrix)
{
QsMatrix m = new QsMatrix();
foreach (QsVector v in matrix)
{
m.AddVector(QsVector.CopyVector(v));
}
return(m);
}
/// <summary>
/// for the tensor product '(*)' operator
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public override QsValue TensorProductOperation(QsValue vl)
{
QsValue value;
if (vl is QsReference)
{
value = ((QsReference)vl).ContentValue;
}
else
{
value = vl;
}
if (value is QsMatrix)
{
// Kronecker product
var tm = (QsMatrix)value;
QsMatrix result = new QsMatrix();
List <QsMatrix> lm = new List <QsMatrix>();
for (int i = 0; i < this.RowsCount; i++)
{
QsMatrix rowM = null;
for (int j = 0; j < this.ColumnsCount; j++)
{
QsScalar element = this[i, j];
var imat = (QsMatrix)(tm * element);
if (rowM == null)
{
rowM = imat;
}
else
{
rowM = rowM.AppendRightMatrix(imat);
}
}
lm.Add(rowM);
}
// append vertically all matrices
foreach (var rm in lm)
{
result = result.AppendLowerMatrix(rm);
}
return(result);
}
throw new NotImplementedException();
}
/// <summary>
/// Transfer the columns of the matrix into rows.
/// </summary>
/// <returns></returns>
public QsMatrix Transpose()
{
QsMatrix m = new QsMatrix();
for (int IX = 0; IX < ColumnsCount; IX++)
{
var vec = this.GetColumnVectorMatrix(IX);
m.AddRow(vec.ToArray());
}
return(m);
}
/// <summary>
/// Removes row at index
/// </summary>
/// <param name="rowIndex"></param>
/// <returns></returns>
public QsMatrix RemoveRow(int rowIndex)
{
QsMatrix m = new QsMatrix();
for (int iy = 0; iy < this.RowsCount; iy++)
{
if (iy != rowIndex)
{
m.AddVector(this[iy]);
}
}
return(m);
}
/// <summary>
/// Removes column at index
/// </summary>
/// <param name="columnIndex"></param>
/// <returns></returns>
public QsMatrix RemoveColumn(int columnIndex)
{
QsMatrix m = new QsMatrix();
for (int ix = 0; ix < this.ColumnsCount; ix++)
{
if (ix != columnIndex)
{
m.AddColumnVector(this.GetColumnVector(ix));
}
}
return(m);
}
public QsMatrix GetVectorMatrix(int rowIndex)
{
if (rowIndex > RowsCount)
{
throw new QsMatrixException("Index '" + rowIndex + "' Exceeds the rows limits '" + RowsCount + "'");
}
QsMatrix mat = new QsMatrix();
mat.AddVector(QsVector.CopyVector(Rows[rowIndex]));
return(mat);
}
/// <summary>
/// Makes n x n matrix with zeros.
/// </summary>
/// <param name="n"></param>
/// <returns></returns>
public static QsMatrix MakeEmptySquareMatrix(int n)
{
QsMatrix m = new QsMatrix();
for (int i = 0; i < n; i++)
{
QsVector v = new QsVector(n);
for (int j = 0; j < n; j++)
{
v.AddComponent(QsScalar.Zero);
}
m.AddVector(v);
}
return(m);
}
/// <summary>
/// The function receive rows from vectors or matrices or may be tensors
/// </summary>
/// <param name="values">Vectors</param>
/// <returns></returns>
public static QsValue MatrixFromValues(params QsValue[] values)
{
if (values[0] is QsTensor)
{
if (values.Count() == 1)
{
return(values[0]);
}
// treat the case of tensors
QsTensor tensor = new QsTensor();
foreach (var tn in values)
{
if (tn.GetType() != typeof(QsTensor))
{
throw new QsException("Non Tensor in a matrix of tensors is not valid expression.");
}
else
{
tensor.AddInnerTensor((QsTensor)tn);
}
}
return(tensor);
}
QsMatrix mat = new QsMatrix();
foreach (var val in values)
{
if (val is QsVector)
{
mat.AddVector((QsVector)val);
}
else if (val is QsMatrix)
{
foreach (var vc in ((QsMatrix)val))
{
mat.AddVector((QsVector)vc);
}
}
else
{
throw new QsInvalidOperationException("Value to be added is not a vector nor a matrix.");
}
}
return(mat);
}
/// <summary>
/// Matrix elements ^. scalar
/// </summary>
/// <param name="scalarQuantity"></param>
/// <returns></returns>
public QsMatrix ElementsPowerScalar(QsScalar scalar)
{
QsMatrix Total = new QsMatrix();
for (int IY = 0; IY < this.RowsCount; IY++)
{
List <QsScalar> row = new List <QsScalar>(ColumnsCount);
for (int IX = 0; IX < this.ColumnsCount; IX++)
{
row.Add(this[IY, IX].PowerScalar(scalar));
}
Total.AddRow(row.ToArray());
}
return(Total);
}
/// <summary>
/// Matrix + scalar
/// </summary>
/// <param name="scalar"></param>
/// <returns></returns>
private QsMatrix AddScalar(QsScalar scalar)
{
QsMatrix Total = new QsMatrix();
for (int IY = 0; IY < this.RowsCount; IY++)
{
List <QsScalar> row = new List <QsScalar>(ColumnsCount);
for (int IX = 0; IX < this.ColumnsCount; IX++)
{
row.Add(this[IY, IX] + scalar);
}
Total.AddRow(row.ToArray());
}
return(Total);
}
/// <summary>
/// Ordinary multiplicatinon of the matrix.
/// Naive implementation :D and I am proud :P
///
/// </summary>
/// <param name="matrix"></param>
/// <returns></returns>
public QsMatrix MultiplyMatrix(QsMatrix matrix)
{
if (this.ColumnsCount == matrix.RowsCount)
{
QsMatrix Total = new QsMatrix();
//loop through my rows
for (int iy = 0; iy < RowsCount; iy++)
{
var vec = this.Rows[iy];
QsScalar[] tvec = new QsScalar[matrix.ColumnsCount]; //the target row in the Total Matrix.
//loop through all co vectors in the target matrix.
for (int tix = 0; tix < matrix.ColumnsCount; tix++)
{
var covec = matrix.GetColumnVectorMatrix(tix).ToArray();
//multiply vec*covec and store it at the Total matrix at iy,ix
QsScalar[] snum = new QsScalar[vec.Count];
for (int i = 0; i < vec.Count; i++)
{
snum[i] = vec[i].MultiplyScalar(covec[i]);
}
QsScalar tnum = snum[0];
for (int i = 1; i < snum.Length; i++)
{
tnum = tnum + snum[i];
}
tvec[tix] = tnum;
}
Total.AddRow(tvec);
}
return(Total);
}
else
{
throw new QsMatrixException("Width of the first matrix [" + this.ColumnsCount + "] not equal to the height of the second matrix [" + matrix.RowsCount + "]");
}
}
/// <summary>
/// used to make sure that the two matrices are dimensionally equal
/// have the same count of rows and columnss
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
public bool DimensionEquals(QsMatrix matrix)
{
if (matrix == null)
{
return(false);
}
else
{
if (this.RowsCount == matrix.RowsCount)
{
if (this.ColumnsCount == matrix.ColumnsCount)
{
return(true); //just for now.
}
}
//dimensions not equal.
return(false);
}
}
/// <summary>
/// '>>' Right Shift Operator
/// </summary>
/// <param name="times"></param>
/// <returns></returns>
public override QsValue RightShiftOperation(QsValue vl)
{
QsValue times;
if (vl is QsReference)
{
times = ((QsReference)vl).ContentValue;
}
else
{
times = vl;
}
QsMatrix ShiftedMatrix = new QsMatrix();
foreach (var vec in this)
{
ShiftedMatrix.AddVector((QsVector)vec.RightShiftOperation(times));
}
return(ShiftedMatrix);
}
/// <summary>
/// Cross product for 3 components vector.
/// </summary>
/// <param name="v1"></param>
/// <param name="v2"></param>
/// <returns></returns>
public QsVector VectorProduct(QsVector v2)
{
if (this.Count != v2.Count)
{
throw new QsException("Vectors are not equal");
}
if (this.Count != 3)
{
throw new QsException("Cross product only happens with 3 component vector");
}
// cross product as determinant of matrix.
QsMatrix mat = new QsMatrix(
new QsVector(QsScalar.One, QsScalar.One, QsScalar.One)
, this
, v2);
return(mat.Determinant());
// problem now: what if we have more than 3 elements in the vector.
// there is no cross product for more than 3 elements for vectors.
}
/// <summary>
/// Make identity matrix bases on dimension
/// </summary>
/// <param name="n">dimension or n * n matrix</param>
/// <returns></returns>
public static QsMatrix MakeIdentity(int n)
{
QsMatrix m = new QsMatrix();
for (int i = 0; i < n; i++)
{
QsVector v = new QsVector(n);
for (int j = 0; j < n; j++)
{
if (j == i)
{
v.AddComponent(QsScalar.One);
}
else
{
v.AddComponent(QsScalar.Zero);
}
}
m.AddVector(v);
}
return(m);
}
public override QsValue Execute(Token expression)
{
string operation = expression.TokenValue;
if (operation.Equals("Transpose()", StringComparison.OrdinalIgnoreCase))
{
return(this.Transpose());
}
if (operation.Equals("Identity", StringComparison.OrdinalIgnoreCase))
{
return(this.Identity);
}
if (operation.Equals("Determinant", StringComparison.OrdinalIgnoreCase))
{
return(QsMatrix.Determinant(this));
}
if (operation.Equals("Cofactors", StringComparison.OrdinalIgnoreCase))
{
return(this.Cofactors);
}
if (operation.Equals("Adjoint", StringComparison.OrdinalIgnoreCase))
{
return(this.Adjoint);
}
if (operation.Equals("Inverse", StringComparison.OrdinalIgnoreCase))
{
return(this.Inverse);
}
throw new QsException("Not implemented or Unknow method for the matrix type");
}
/// <summary>
/// Create A matrix from a row values by aligning values to the left in
/// </summary>
/// <param name="values"></param>
/// <returns></returns>
public static QsValue MatrixRowFromValues(params QsValue[] values)
{
// what about [g g] and g is tensor
// in this case return value should be tensor
// from the higher degree of above g
if (values[0] is QsTensor)
{
if (values.Count() == 1)
{
return(values[0]);
}
// in rare cases or event known cases by me Ahmed Sadek and because of parsing
// sometimes I enclose tensor variable inside matrix [g g <|4 3|> ]
// so in this case i will the return as it is.
QsTensor tensor = new QsTensor();
foreach (var inTensor in values)
{
if (inTensor.GetType() != typeof(QsTensor))
{
throw new QsException("Non Tensor in a matrix of tensors is not valid expression.");
}
else
{
tensor.AddInnerTensor((QsTensor)inTensor);
}
}
return(tensor);
}
QsMatrix m = new QsMatrix();
foreach (var v in values)
{
if (v is QsScalar)
{
if (m.RowsCount == 0)
{
m.AddVector((QsVector)VectorFromValues(v));
}
else
{
m.Rows[0].AddComponent((QsScalar)v);
}
}
if (v is QsVector)
{
if (m.RowsCount == 0)
{
m.AddVector(((QsVector)v).Clone() as QsVector);
}
else if (m.RowsCount == 1)
{
m.Rows[0].AddComponents((QsVector)v);
}
else
{
throw new QsInvalidOperationException("Couldn't adding vector to multi row matrix");
}
}
if (v is QsMatrix)
{
if (m.RowsCount == 0)
{
m = null;
m = QsMatrix.CopyMatrix((QsMatrix)v);
}
else if (m.RowsCount == ((QsMatrix)v).RowsCount)
{
foreach (var col in ((QsMatrix)v).Columns)
{
m.AddColumnVector(col);
}
}
else
{
throw new QsInvalidOperationException("Couldn't adding different row matrices");
}
}
}
return(m);
}
// Contribution by Edward Popko, a well commented version: determinant.c for Microsoft C++ Visual Studio 6.
// http://local.wasp.uwa.edu.au/~pbourke/miscellaneous/determinant/determinant.c
//==============================================================================
// Recursive definition of determinate using expansion by minors.
//
// Notes: 1) arguments:
// a (double **) pointer to a pointer of an arbitrary square matrix
// n (int) dimension of the square matrix
//
// 2) Determinant is a recursive function, calling itself repeatedly
// each time with a sub-matrix of the original till a terminal
// 2X2 matrix is achieved and a simple determinat can be computed.
// As the recursion works backwards, cumulative determinants are
// found till untimately, the final determinate is returned to the
// initial function caller.
//
// 3) m is a matrix (4X4 in example) and m13 is a minor of it.
// A minor of m is a 3X3 in which a row and column of values
// had been excluded. Another minor of the submartix is also
// possible etc.
// m a b c d m13 . . . .
// e f g h e f . h row 1 column 3 is elminated
// i j k l i j . l creating a 3 X 3 sub martix
// m n o p m n . p
//
// 4) the following function finds the determinant of a matrix
// by recursively minor-ing a row and column, each time reducing
// the sub-matrix by one row/column. When a 2X2 matrix is
// obtained, the determinat is a simple calculation and the
// process of unstacking previous recursive calls begins.
//
// m n
// o p determinant = m*p - n*o
//
// 5) this function uses dynamic memory allocation on each call to
// build a m X m matrix this requires ** and * pointer variables
// First memory allocation is ** and gets space for a list of other
// pointers filled in by the second call to malloc.
//
// 6) C++ implements two dimensional arrays as an array of arrays
// thus two dynamic malloc's are needed and have corresponsing
// free() calles.
//
// 7) the final determinant value is the sum of sub determinants
//
//==============================================================================
/*
* double Determinant(double** a, int n)
* {
* int i, j, j1, j2; // general loop and matrix subscripts
* double det = 0; // init determinant
* double** m = NULL; // pointer to pointers to implement 2d
* // square array
*
* if (n < 1) { } // error condition, should never get here
*
* else if (n == 1)
* { // should not get here
* det = a[0][0];
* }
*
* else if (n == 2)
* { // basic 2X2 sub-matrix determinate
* // definition. When n==2, this ends the
* det = a[0][0] * a[1][1] - a[1][0] * a[0][1];// the recursion series
* }
*
*
* // recursion continues, solve next sub-matrix
* else
* { // solve the next minor by building a
* // sub matrix
* det = 0; // initialize determinant of sub-matrix
*
* // for each column in sub-matrix
* for (j1 = 0; j1 < n; j1++)
* {
* // get space for the pointer list
* m = (double**)malloc((n - 1) * sizeof(double*));
*
* for (i = 0; i < n - 1; i++)
* m[i] = (double*)malloc((n - 1) * sizeof(double));
* // i[0][1][2][3] first malloc
* // m -> + + + + space for 4 pointers
* // | | | | j second malloc
* // | | | +-> _ _ _ [0] pointers to
* // | | +----> _ _ _ [1] and memory for
* // | +-------> _ a _ [2] 4 doubles
* // +----------> _ _ _ [3]
* //
* // a[1][2]
* // build sub-matrix with minor elements excluded
* for (i = 1; i < n; i++)
* {
* j2 = 0; // start at first sum-matrix column position
* // loop to copy source matrix less one column
* for (j = 0; j < n; j++)
* {
* if (j == j1) continue; // don't copy the minor column element
*
* m[i - 1][j2] = a[i][j]; // copy source element into new sub-matrix
* // i-1 because new sub-matrix is one row
* // (and column) smaller with excluded minors
* j2++; // move to next sub-matrix column position
* }
* }
*
* det += pow(-1.0, 1.0 + j1 + 1.0) * a[0][j1] * Determinant(m, n - 1);
* // sum x raised to y power
* // recursively get determinant of next
* // sub-matrix which is now one
* // row & column smaller
*
* for (i = 0; i < n - 1; i++) free(m[i]);// free the storage allocated to
* // to this minor's set of pointers
* free(m); // free the storage for the original
* // pointer to pointer
* }
* }
* return (det);
* }
*/
// the code above is converted by me Ahmed Sadek to support determinant in Qs :)
// I copied the code with the information about who made it to preserve the rights of the person
// who made this effort.
// Thank you
public static QsScalar Determinant(QsMatrix a)
{
// code taken from: http://local.wasp.uwa.edu.au/~pbourke/miscellaneous/determinant/
int n = a.RowsCount;
QsScalar det = default(QsScalar);
if (n < 1)
{
throw new QsException("Zero component matrix, are you crazy :)"); // error condition, should never get here
}
else if (n == 1)
{
// should not get here
det = a[0][0];
}
else if (n == 2)
{
// basic 2X2 sub-matrix determinate
// definition. When n==2, this ends the
det = a[0][0] * a[1][1] - a[1][0] * a[0][1];// the recursion series
}
// recursion continues, solve next sub-matrix
else
{ // solve the next minor by building a
// sub matrix
int i, j, j1, j2;
QsMatrix m = QsMatrix.MakeEmptySquareMatrix(n - 1);
// for each column in sub-matrix
for (j1 = 0; j1 < n; j1++)
{
// build sub-matrix with minor elements excluded
for (i = 1; i < n; i++)
{
j2 = 0; // start at first sum-matrix column position
// loop to copy source matrix less one column
for (j = 0; j < n; j++)
{
if (j == j1)
{
continue; // don't copy the minor column element
}
m[i - 1][j2] = a[i][j]; // copy source element into new sub-matrix
// i-1 because new sub-matrix is one row
// (and column) smaller with excluded minors
j2++; // move to next sub-matrix column position
}
}
var fn = System.Math.Pow(-1.0, 1.0 + j1 + 1.0);
var f = fn.ToQuantity().ToScalar();
var mr = Determinant(m);
if (det == null)
{
det = f * (a[0][j1] * mr);
}
else
{
det += f * (a[0][j1] * mr);
}
// sum x raised to y power
// recursively get determinant of next
// sub-matrix which is now one
// row & column smaller
}
}
return(det);
}
public override QsValue MultiplyOperation(QsValue vl)
{
QsValue value;
if (vl is QsReference)
{
value = ((QsReference)vl).ContentValue;
}
else
{
value = vl;
}
if (value is QsScalar)
{
var scalar = (QsScalar)value;
QsTensor NewTensor = new QsTensor();
if (this.Order > 3)
{
foreach (var iTensor in this.InnerTensors)
{
NewTensor.AddInnerTensor((QsTensor)iTensor.MultiplyOperation(value));
}
}
else
{
for (int il = 0; il < this.MatrixLayers.Count; il++)
{
QsMatrix ResultMatrix = (QsMatrix)this.MatrixLayers[il].MultiplyOperation(scalar);
NewTensor.AddMatrix(ResultMatrix);
}
}
return(NewTensor);
}
if (value is QsTensor)
{
var tensor = (QsTensor)value;
if (this.Order == 1 && tensor.Order == 1)
{
var thisVec = this[0][0];
var thatVec = tensor[0][0];
var result = (QsMatrix)thisVec.TensorProductOperation(thatVec);
return(new QsTensor(result));
}
if (this.Order == 2 && tensor.Order <= 2)
{
//tenosrial product of two matrices will result in another matrix also.
QsMatrix result = (QsMatrix)this.MatrixLayers[0].TensorProductOperation(tensor.MatrixLayers[0]);
return(new QsTensor(result));
}
else
{
throw new QsException("", new NotImplementedException());
}
}
throw new QsException("Tensor Multiplication Operation with " + value.GetType().Name + " Failed");
}
public override QsValue SubtractOperation(QsValue vl)
{
QsValue value;
if (vl is QsReference)
{
value = ((QsReference)vl).ContentValue;
}
else
{
value = vl;
}
if (value is QsScalar)
{
var scalar = value as QsScalar;
QsTensor NewTensor = new QsTensor();
if (this.Order > 3)
{
foreach (var iTensor in this.InnerTensors)
{
NewTensor.SubtractOperation((QsTensor)iTensor.AddOperation(value));
}
}
else
{
for (int il = 0; il < this.MatrixLayers.Count; il++)
{
QsMatrix ResultMatrix = (QsMatrix)this.MatrixLayers[il].SubtractOperation(scalar);
NewTensor.AddMatrix(ResultMatrix);
}
}
return(NewTensor);
}
if (value is QsTensor)
{
var tensor = value as QsTensor;
if (this.Order != (tensor.Order))
{
throw new QsException("Adding two different ranked tensors are not supported");
}
if (this.Order > 3)
{
QsTensor NewTensor = new QsTensor();
for (int i = 0; i < this.InnerTensors.Count(); i++)
{
var iTensor = this.InnerTensors[i];
NewTensor.AddInnerTensor((QsTensor)
iTensor.SubtractOperation(tensor.InnerTensors[i]));
}
return(NewTensor);
}
else
{
if (tensor.MatrixLayers.Count == this.MatrixLayers.Count)
{
// the operation will succeed
if (tensor.FaceRowsCount == this.FaceRowsCount)
{
if (tensor.FaceColumnsCount == this.FaceColumnsCount)
{
QsTensor NewTensor = new QsTensor();
for (int il = 0; il < this.MatrixLayers.Count; il++)
{
QsMatrix ResultMatrix = (QsMatrix)this.MatrixLayers[il].SubtractOperation(tensor.MatrixLayers[il]);
NewTensor.AddMatrix(ResultMatrix);
}
return(NewTensor);
}
}
}
}
}
throw new QsException("Tensor Subtract Operation with " + value.GetType().Name + " Failed");
}