View Compilation Error

0_0_22739291_9451.cpp: In function '__float128 dist(point, point)':
0_0_22739291_9451.cpp:52:29: error: 'sqrtq' was not declared in this scope
     return sqrtq((a-b)*(a-b));
                             ^
0_0_22739291_9451.cpp: In function 'int main()':
0_0_22739291_9451.cpp:96:27: error: 'sqrtq' was not declared in this scope
         tt=sqrtq(r*r-tt*tt);
                           ^