View Compilation Error

0_0_39834329_8324.cpp: In member function 'ld Point::length()':
0_0_39834329_8324.cpp:39:26: error: 'sqrtl' was not declared in this scope; did you mean 'strtol'?
   39 |     ld length() { return sqrtl(1ll * x * x + 1ll * y * y); }
      |                          ^~~~~
      |                          strtol
0_0_39834329_8324.cpp: In function 'bool is_in_polig(Point, Point, Point, Point, Point)':
0_0_39834329_8324.cpp:97:17: error: 'atan2l' was not declared in this scope
   97 |         s = s + atan2l((a[i] - X) % (a[j] - X), (a[i] - X) * (a[j] - X));
      |                 ^~~~~~