[Symphony-tickets] [SYMPHONY Branch-and-Cut Framework] #44: final optimality gap not reported correctly

[SYMPHONY Branch-and-Cut Framework]

#44: final optimality gap not reported correctly
----------------------+-----------------------------------------------------
 Reporter:  asm4      |       Owner:  tkr
     Type:  defect    |      Status:  new
 Priority:  critical  |   Milestone:     
Component:  Master    |     Version:  5.1
 Severity:  normal    |    Keywords:     
----------------------+-----------------------------------------------------
 Final optimality gap, lower and upper bounds are not reported correctly
 for problems with a negative upper bound.

 line no 793 in src/Master/master_io.c should be changed from:
 gap = 100*(ub-lb)/ub;

 to:
 gap = fabs(100*(ub-lb)/ub);


 to reproduce error:
 symphony -F harp2.mps -f options
 where options has:
 time_limit  60

-- 
Ticket URL: <https://projects.coin-or.org/SYMPHONY/ticket/44>
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