int mp_div_2d(fp_int* a, int b, fp_int* c, fp_int* d)
{
    fp_div_2d(a, b, c, d);
    return MP_OKAY;
}
int mp_div_2d(fp_int* a, int b, fp_int* c, fp_int* d)
{
    fp_div_2d(a, b, c, d);
    return MP_OKAY;
}