View Compilation Error

0_0_26200417_4595.cpp: In function 'bool _line::segment_across_line(_line::line, _line::line)':
0_0_26200417_4595.cpp:128:41: error: 'getpoint' was not declared in this scope
     point xxx = getpoint(a.a,a.b,b.a,b.b);
                                         ^