View Compilation Error

0_0_25642958_29406.cpp: In function 'double solver(int, int)':
0_0_25642958_29406.cpp:53:28: error: 'fasb' was not declared in this scope
   if(fasb(rp[j].y - lp[i].y) < d) d = min(dis(rp[j], lp[i]), d);
                            ^