added some asserts

math/divergence/KullbackLeibler.h

@@ -53,6 +53,10 @@ namespace Divergence {
                 auto log1 = std::log(det1);
                 auto log2 = std::log(det2);
 
+                //determinate shouldn't be 0!
+                Assert::isNot0(det1, "Determinat of the first Gauss is Zero! Check the Cov Matrix.");
+                Assert::isNot0(det2, "Determinat of the second Gauss is Zero! Check the Cov Matrix.");
+
                 //trace
                 Eigen::MatrixXd toTrace(norm1.getSigma().rows(),norm1.getSigma().cols());
                 toTrace = norm2.getSigmaInv() * norm1.getSigma();
@@ -74,6 +78,8 @@ namespace Divergence {
                 if(klb < 0.0){
                     Assert::doThrow("The Kullback Leibler Distance is < 0! Thats not possible");
                 }
+                Assert::isNotNaN(klb, "The Kullback Leibler Distance is NaN!");
+
                 return klb;
             }