Unit:  SDL_matrix 
Class: 
TMatrix, TIntMatrix,
TMat3D 
Declaration: 
procedure Fill (value: double); { class TMatrix, and TMat3D }
procedure Fill (value: integer); { class TIntMatrix }

The method Fill sets all elements of a matrix to value. For a sparse matrix the method Fill sets only the nonzero elements to value. If value is zero the sparse matrix is completely emptied and any allocated memory is released.
Hint: 
The class TMatrix has no explicit method to clear the elements of the matrix. In order to reset all elements to zero values, the method Fill should be
used. 
Example: 
The statement Mat.Fill(0.0); clears all elements of the matrix
Mat. 
