Download User`s Guide - Chasqueweb

Reference manual
Description of parameters
(output)
Element Description
11
Number of iterations
12
Exit status:
0: converged to solution
{1: no convergence has been achieved
{2: \soft"-breakdown, solution may have been found
{3: \hard"-breakdown, no solution
{4: conict in preconditioner and stopping criterion selected;
if IPAR(8)=0 or IPAR(8)=2 then IPAR(9)6=6
{5: error in stopping criterion 3, rkT zk < 0
{6: stopping criterion invalid on PIM CHEBYSHEV
{7: no estimates of eigenvalues supplied for PIM CHEBYSHEV
{8: underow while computing 1 on PIM CGEV
{9: overow while computing 1 on PIM CGEV
{10: underow while computing n on PIM CGEV
{11: overow while computing n on PIM CGEV
13
If IPAR(12) is either {2 or {3, it gives the step number in
the algorithm where a breakdown has occurred
IPAR
PAR (input)
Element Description
1
The value of " for use in the stopping criterion
(output)
Element Description
2
The left-hand side of the stopping criterion selected
3
Minimum real part of the eigenvalues of Q1AQ2
4
Maximum real part of the eigenvalues of Q1AQ2
5
Minimum imaginary part of the eigenvalues of Q1AQ2
6
Maximum imaginary part of the eigenvalues of Q1 AQ2
PAR
46