--- /dev/null
+long f1(long, long*);
+long f2(long, long*);
+long f3(long, long*);
+long f4(long, long*);
+long f5(long, long*);
+long f6(long, long*);
+long f7(long, long*);
+long f8(long, long*);
+
+long muh[] = {6,4};
+long kuh[] = {1,0};
+long zod[] = {0,1};
+long pui[] = {1,1};
+
+printf("%d = %d , %d = %d, %d = %d, %d = %d \n", f8(5,muh) , 1 , f8(4,muh) , 1 , f8(0,muh) , 0 , f8(0,zod) , 0 );
+
+RET(f1(5,muh) == 0 && f1(4,muh) == 1 &&
+ f2(5,kuh) == 0 && f2(5,zod) == 1 &&
+ f3(5,kuh) == 1 && f3(5,zod) == 0 && f3(5,muh) == 1 &&
+ f4(5,kuh) == 1 && f4(5,zod) == 0 && f4(5,muh) == 0 &&
+ f5(5,kuh) == 0 && f5(5,zod) == 1 &&
+ f6(5,muh) == 1 && f6(5,kuh) == 1 && f6(5,pui) == 0 &&
+ f7(5,muh) == 1 && f7(5,kuh) == 0 && f7(5,pui) == 1 &&
+ f8(5,muh) == 0 && f8(4,muh) == 0 && f8(0,muh) == 1 && f8(0,zod) == 1
+ );