void cvEigenVV(CvArr* mat, CvArr* evects, CvArr* evals, double eps) {
    void *fptr;

    fptr = dlsym(_Chcv_handle, "cvEigenVV_chdl");
    if(fptr == NULL) {
        fprintf(_stderr, "Error: %s(): dlsym(): %s\n", __func__,  dlerror());
        return;
    }
    dlrunfun(fptr, NULL, cvEigenVV, mat, evects, evals, eps);
}
