MixedIntegerLinearProgram.set_max bug?
 
  
 
  
 
 
 
 
 
 
    
        
        asked 12 years ago  
 
 Jeremy Martin gravatar image  
 
 
 
 
    
        
        updated 9 years ago  
 
 vdelecroix gravatar image  
 
 
 
 
 
The set_max method in MixedIntegerLinearProgram() does not seem to work correctly if the maximum value specified is 0.  Specifically, the input....
 
Q = MixedIntegerLinearProgram();
xx = Q['xx'];
Q.set_min(xx,0);
Q.get_min(xx)
 
... returns null, but ....
 
Q = MixedIntegerLinearProgram();
xx = Q['xx'];
Q.set_min(xx,3);
Q.get_min(xx)
 
... works fine.  Anyone know what's going on here?
 
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This problem seems to be fixed on Sage 5.9, since i get 0 as an answer to your first query as expected. Could you still reproduce it ?
tmonteil gravatar imagetmonteil (
    
        11 years ago
    )
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