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Luc Maisonobe edited comment on MATH-464 at 4/9/11 7:49 PM: ------------------------------------------------------------ We restarted a thread about this a few days after the previous comment on this issue. The thread can be read here: http://markmail.org/thread/rnazrggnnuehz4qv I think adding maxEvaluations while still preserving the existing maxIterations would be fine. was (Author: luc): We restarted a thread about this a few days after the previous comment on this issue. The thread can be read here: http://commons.markmail.org/thread/cajgm5lwphlse3lr I think adding maxEvaluations while still preserving the existing maxIterations would be fine. > LegendreGaussIntegrator ignores defaultMaximalIterationCount and does 38 > million iterations > ------------------------------------------------------------------------------------------- > > Key: MATH-464 > URL: https://issues.apache.org/jira/browse/MATH-464 > Project: Commons Math > Issue Type: Bug > Affects Versions: 2.1 > Reporter: Michael Borcherds > Priority: Critical > Fix For: 3.0 > > Original Estimate: 3h > Remaining Estimate: 3h > > The following code results in count = 37801710 which is effectively an > infinite loop for typical functions we are using > (in GeoGebra) > The argument defaultMaximalIterationCount = 100 is being ignored > This is the version we are using: > http://www.geogebra.org/trac/browser/trunk/geogebra/org/apache/commons/math/analysis/integration/LegendreGaussIntegrator.java > LegendreGaussIntegrator gauss = new LegendreGaussIntegrator(5, 100); > > try { > double result = gauss.integrate(new testFun(), -10, > 0.32462367623786328); > } catch (Exception ee) { > ee.printStackTrace(); > } > class testFun implements UnivariateRealFunction { > public double value(double x) throws FunctionEvaluationException { > count ++; > if (x>=0 && x<=5) return 0.2; else return 0; > } > } -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira