ext/libsvm/svm.cpp in rb-libsvm-1.4.3 vs ext/libsvm/svm.cpp in rb-libsvm-1.4.4

@@ -3063,13 +3063,14 @@
 	   kernel_type != RBF &&
 	   kernel_type != SIGMOID &&
 	   kernel_type != PRECOMPUTED)
 		return "unknown kernel type";
 
-	if(param->gamma < 0)
+	if((kernel_type == POLY || kernel_type == RBF || kernel_type == SIGMOID) &&
+	   param->gamma < 0)
 		return "gamma < 0";
 
-	if(param->degree < 0)
+	if(kernel_type == POLY && param->degree < 0)
 		return "degree of polynomial kernel < 0";
 
 	// cache_size,eps,C,nu,p,shrinking
 
 	if(param->cache_size <= 0)