Non-negative variables and -0.0 values

Answered

Ayesha Farooq

November 08, 2023 20:59

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I am trying to solve a goal programming problem. My deviation variables' (n_l, p_l) values are supposed to be non-negative integers. I even added constraints like

    for l in L:
        m.addConstr(nl[l]>= 0)
        m.addConstr(pl[l]>= 0)

but I still get -0.0 for some of the variable values while 0.0 for others. 

I can see 0.0 is valid but what does -0.0 mean and why the added constraints do not take care of it?

0

• 

  Marika Karbstein

  • Gurobi Staff

  November 09, 2023 10:49

  Please see this post.

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