View Compilation Error

0_0_36749704_11535.cpp: In function 'int Tdis(Point, Point, Point)':
0_0_36749704_11535.cpp:72:27: error: 'v' was not declared in this scope
         return ((mulcross(v, u) % mod) * (mulcross(v, u) % mod)) % mod * po(u.mod2() % mod, mod - 2) % mod;
                           ^
0_0_36749704_11535.cpp:72:79: error: request for member 'mod2' in 'u', which is of non-class type 'int'
         return ((mulcross(v, u) % mod) * (mulcross(v, u) % mod)) % mod * po(u.mod2() % mod, mod - 2) % mod;
                                                                               ^