/****f* silcmath/SilcMPAPI/silc_mp_div_2exp_qr
*
* SYNOPSIS
*
* void silc_mp_div_2exp_qr(SilcMPInt *q, SilcMPInt *r, SilcMPInt *mp1,
/****f* silcmath/SilcMPAPI/silc_mp_div_2exp_qr
*
* SYNOPSIS
*
* void silc_mp_div_2exp_qr(SilcMPInt *q, SilcMPInt *r, SilcMPInt *mp1,