[Ipopt-tickets] [Ipopt] #203: User-provided starting point is modified

[Ipopt]

#203: User-provided starting point is modified
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  Reporter:  baiyang11      |      Owner:  ipopt-team
      Type:  clarification  |     Status:  reopened
  Priority:  normal         |  Component:  Ipopt
   Version:  3.9            |   Severity:  normal
Resolution:                 |   Keywords:
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Comment (by stefan):

 It may be that due to roundoff errors, it is not possible to make the
 change in the initial point arbitrarily small.

 To see how the method has been implemented exactly, look at the
 {{{push_variables()}}} method in !IpDefaultIterateInitializer.cpp. As far
 as I see, it is as described in the paper.

 For a bounded variables with initial point at the lower bound, Ipopt
 should give you x,,L,,^(i)^ + p,,L,,^(i)^, and analog for variables at the
 upper bound.

-- 
Ticket URL: <https://projects.coin-or.org/ticket/203#comment:6>
Ipopt <http://projects.coin-or.org/Ipopt>
Interior-point optimizer for nonlinear programs.