Laboratoire de l'Informatique et du Parallélisme » Pobyso

def spo_expression_as_string(powI, powT, powP, alpha):

    expressionAsString =""

    if powI != 0:

        expressionAsString += "i^" + str(powI)

    if powT != 0:

        if len(expressionAsString) != 0:

            expressionAsString += " * "

        expressionAsString += "t^" + str(powT)

    if powP != 0:

        if len(expressionAsString) != 0:

            expressionAsString += " * "

        expressionAsString += "p^" + str(powP)

    if (alpha - powP) != 0 :

        if len(expressionAsString) != 0:

            expressionAsString += " * "

        expressionAsString += "N^" + str(alpha - powP)

    return(expressionAsString)

# End spo_expression_as_string.

def smo_is_diagonal_complete_matrix(mat):

    Check that all the element on the diagonal are not 0.

    # A 1x1 matrix is diagonal complete if it's single element is not 0.

        if mat[0, 0] != 0:

            return True

        else:

            return False

    # End if

        if mat[rowIndex, rowIndex] == 0:

            print mat.rows()[rowIndex], rowIndex

            return False

# End smo_is_diagonal_complete_matrix

def smo_is_lower_triangular_matrix(mat):

    Check that the matrix is lower triangular.

    # A 1x1 matrix is lower triangular.

        return True

        for colIndex in xrange(rowIndex + 1, dimensions[1]):

            if mat[rowIndex, colIndex] != 0:

                print mat.rows()[rowIndex]

                return False

# End smo_is_lower_triangular_matrix