Révision 111 pobysoPythonSage/src/sageSLZ/sageMatrixOperations.sage

sageMatrixOperations.sage (revision 111)
116 116 
    return(varDeclarationString, varListArrayDeclaration)
117 117 
# End smo_transformation_row_matrix_strings.
118 118 

  		





  
  119
  
    
def smo_triangular_matrix_determinant(matrix):


  		





  
  120
  
    
    if matrix == None:


  		





  
  121
  
    
        return None


  		





  
  122
  
    
    numRows = matrix.nrows()


  		





  
  123
  
    
    if numRows < 1:


  		





  
  124
  
    
        return 0


  		





  
  125
  
    
    determinant = 1


  		





  
  126
  
    
    for rowIndex in xrange(numRows):


  		





  
  127
  
    
        determinant *= matrix[rowIndex, rowIndex]


  		





  
  128
  
    
    return determinant


  		





  
  129
  
    
# End smo_triangular_matrix_determinant


  		





  
  130
  
    
#


  		





  119
  131
  
    
def smo_zero_rows_index_list(matrix):


  		





  120
  132
  
    
    """


  		





  121
  133
  
    
    Compute the list of indices of the rows that have a 0 norm.


  		












Formats disponibles :
  Unified diff