[Ipopt] new_x

[Stefan Vigerske]

Hi,

maybe have a closer look at the docu for that flag, e.g., 
https://coin-or.github.io/Ipopt/classIpopt_1_1TNLP.html#a709c03900227bc573b046ce0705e6c84

The point is that there are a number of eval-functions and in some 
implementations, these functions may share some calculations. The new_x 
will tell you whether recent calculations you did in some eval-function 
are still valid or need to be redone because the input changed.

Stefan

On 10/30/20 3:58 AM, Redouane wrote:
> Hi,
> 
> Why Ipopt call evaluation functions if new_x is false?
> 
> With same x, results will be exactly same,
> 
> I'm I missing something?
> 
> Thanks
> 
> 
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