19 int main(
int argc,
char ** argv)
21 std::cout <<
"test a_wrench" << std::endl;
23 std::cout <<
"f1 " << f1 << std::endl;
25 std::cout <<
"f2 " << f2 << std::endl;
27 std::cout <<
"f3 " << f3 << std::endl;
28 std::cout <<
"f1+f2 " << f1+f2 << std::endl;
30 std::cout <<
"f4 " << f4 << std::endl;
31 std::cout <<
"-f4 " << -f4 << std::endl;
int main(int argc, char **argv)