<ol>
<li> <p>
New: For recognizing a diverging solver before the maximum
- number of steps is reached, <code
- class="class">SolverControl</code> returns <code
- class="member">failure</code> also if the residual increases
- the start residual by a specific factor. This factor is given
- to the <code class="class">SolverControl</code> by the <code
- class="member">set_failure_criterion</code> function. After
- calling the latter function the checking of this additional
- failure criterion may again be disabled by calling <code
- class="member">clear_failure_criterion</code>.
+ number of steps is reached,
+ <code class="class">SolverControl</code> returns
+ <code class="member">failure</code> also if the residual
+ increases over the start residual by a specific factor. This
+ factor is given to the <code class="class">SolverControl</code>
+ object by the <code class="member">set_failure_criterion</code>
+ function. After calling the latter function, checking of this
+ additional failure criterion may again be disabled by calling
+ <code class="member">clear_failure_criterion</code>.
<br>
(Ralf Hartmann 2000/06/26)
</p>