optimize: relax gradient tolerance for BFGS test
@@ -840,7 +840,7 @@ var bfgsTests = []unconstrainedTest{
Grad: functions.BrownAndDennis{}.Grad,
},
x: []float64{25, 5, -5, -1},
- gradTol: 1e-5,
+ gradTol: 1e-3,
},
{
name: "ExtendedRosenbrock",
