void icvGetCrossPieceDirect(CvPoint2D64f p_start, CvPoint2D64f p_end, double a, double b, double c, CvPoint2D64f *cross, int* result) {
    void *fptr;

    fptr = dlsym(_Chcv_handle, "icvGetCrossPieceDirect_chdl");
    if(fptr == NULL) {
        fprintf(_stderr, "Error: %s(): dlsym(): %s\n", __func__,  dlerror());
        return;
    }
    dlrunfun(fptr, NULL, icvGetCrossPieceDirect, p_start, p_end, a, b, c, cross, result);
}
