View Compilation Error

0_0_39301212_22559.cpp: In function 'int main()':
0_0_39301212_22559.cpp:48:19: error: 'log' was not declared in this scope; did you mean 'long'?
   48 |         t = (int)(log(n) / log(2)) + 1;
      |                   ^~~
      |                   long