int mp_to_unsigned_bin_at_pos(int x, fp_int *t, unsigned char *b)
{
    return fp_to_unsigned_bin_at_pos(x, t, b);
}
int mp_to_unsigned_bin_at_pos(int x, fp_int *t, unsigned char *b)
{
    return fp_to_unsigned_bin_at_pos(x, t, b);
}