public void TestToString()
 {
     double[] ps = { 5, 0, 0, 0 };
     var funct = new InverseMultiquadricFunction(3, ps, 0);
     double[] x = { -1, 0, 1 };
     funct.Evaluate(x);
     Assert.AreEqual("[InverseMultiquadricFunction:width=5.00,center=0.00,0.00,0.00]", funct.ToString());
 }
 public void TestEvaluate()
 {
     double[] ps = { 5, 0, 0, 0 };
     var funct = new InverseMultiquadricFunction(3, ps, 0);
     double[] x = { -1, 0, 1 };
     double y = funct.Evaluate(x);
     Assert.AreEqual(0.11396057645963795, y, AIFH.DefaultPrecision);
 }