Luc Maisonobe created MATH-1275: ----------------------------------- Summary: EventHandler and StepHandler interfaces do not provide derivatives Key: MATH-1275 URL: https://issues.apache.org/jira/browse/MATH-1275 Project: Commons Math Issue Type: Bug Affects Versions: 3.5 Reporter: Luc Maisonobe Fix For: 4.0
The EventHandler and StepHandler interfaces allow passing the current state vector to user code, but not its derivatives. This is a pity because the integrator does know these derivatives as they are the basis from which everything else is computed. The data is lying around, just not passed to user. This is a design issue and as it affects user interfaces, it cannot be fixed before 4.0. -- This message was sent by Atlassian JIRA (v6.3.4#6332)