long f(long);
#define ERG(a) ((a-1)-(a-5)-(a-10))
#define ARG1 -10
#define ARG2 1333157
#define ARG3 -35981341
int ret1 = f(ARG1);
int ret2 = f(ARG2);
int ret3 = f(ARG3);
printf("ret1 ist %8i (sollte %8i sein)\n", ret1, ERG(ARG1));
printf("ret2 ist %8i (sollte %8i sein)\n", ret2, ERG(ARG2));
printf("ret3 ist %8i (sollte %8i sein)\n", ret3, ERG(ARG3));
RET(ret1 == ERG(ARG1) && ret2 == ERG(ARG2) && ret3 == ERG(ARG3));