int icvGetSymPoint3D(CvPoint3D64f pointCorner, CvPoint3D64f point1, CvPoint3D64f point2, CvPoint3D64f *pointSym2) {
    void *fptr;
    int retval;

    fptr = dlsym(_Chcv_handle, "icvGetSymPoint3D_chdl");
    if(fptr == NULL) {
        fprintf(_stderr, "Error: %s(): dlsym(): %s\n", __func__,  dlerror());
        return -1;
    }
    dlrunfun(fptr, &retval, icvGetSymPoint3D, pointCorner, point1, point2, pointSym2);
    return retval;
}
