how to use QP=Quadratic Programming in svm

I am using svm for anomaly detection as follow

svmStruct = svmtrain(tr,label,'kernel_function','rbf','ShowPlot',true);
ok1 = svmclassify(svmStruct,test1,'ShowPlot',true);

default separating hyperplane method is SMO but I want to use QP i.e. Quadratic programming . how to use it in above code.