[Coin-lpsolver] OsiClp::deleteCols

Thu Apr 19 12:27:58 EDT 2007

Anureet,

Error only seemed to be on branches/devel.  Hopefully fixed.

John Forrest

             Anureet Saxena                                                
             <anureet at yahoo.co                                             
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                                                                   Subject 
                                       [Coin-lpsolver] OsiClp::deleteCols  
             04/15/07 08:17 AM                                             

hi,

I am using OsiClpSolverInterface to construct a mixed integer program.
There seems to be some problem with the deleteCols(int,int*) function; the
code does not seem to update the information about the integer variables
properly. A simple code with a 3-variable 1-constraint example to reproduce
this problem is available at:

http://www.andrew.cmu.edu/user/anureets/tmp/deleteCols.tgz.

Of the three (x,y,z) variables in the test problem only y is integer
constrained. However after deleting the variable x from the problem, the
modified problem has z as the integer constrained variable.

It will be very helpful if someone could fix this problem.

regards & thanks,
Anureet Saxena

Anureet Saxena
anureet at cmu.edu
anureet at yahoo.com

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