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use double.Positive/NegativeInfinity

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lperron@google.com
2012-01-29 13:06:56 +00:00
parent 60f6704ac4
commit f19d96af53
2 changed files with 14 additions and 18 deletions
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12
csharp/csintegerprogramming.cs
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@@ -24,17 +24,16 @@ public class CsIntegerProgramming
Console.WriteLine("Could not create solver " + solverType);
return;
}
double infinity = MPSolver.Infinity();
// x1 and x2 are integer non-negative variables.
MPVariable x1 = solver.MakeIntVar(0.0, infinity, "x1");
MPVariable x2 = solver.MakeIntVar(0.0, infinity, "x2");
MPVariable x1 = solver.MakeIntVar(0.0, double.PositiveInfinity, "x1");
MPVariable x2 = solver.MakeIntVar(0.0, double.PositiveInfinity, "x2");
// Minimize x1 + 2 * x2.
solver.SetObjectiveCoefficient(x1, 1);
solver.SetObjectiveCoefficient(x2, 2);
// 2 * x2 + 3 * x1 >= 17.
MPConstraint ct = solver.MakeConstraint(17, infinity);
MPConstraint ct = solver.MakeConstraint(17, double.PositiveInfinity);
ct.SetCoefficient(x1, 3);
ct.SetCoefficient(x2, 2);
@@ -71,10 +70,9 @@ public class CsIntegerProgramming
Console.WriteLine("Could not create solver " + solverType);
return;
}
double infinity = MPSolver.Infinity();
// x1 and x2 are integer non-negative variables.
MPVariable x1 = solver.MakeIntVar(0.0, infinity, "x1");
MPVariable x2 = solver.MakeIntVar(0.0, infinity, "x2");
MPVariable x1 = solver.MakeIntVar(0.0, double.PositiveInfinity, "x1");
MPVariable x2 = solver.MakeIntVar(0.0, double.PositiveInfinity, "x2");
solver.Minimize(x1 + 2 * x2);
solver.Add(2 * x2 + 3 * x1 >= 17);