1#include <tommath.h>
2#ifdef BN_MP_DR_SETUP_C
3/* LibTomMath, multiple-precision integer library -- Tom St Denis
4 *
5 * LibTomMath is a library that provides multiple-precision
6 * integer arithmetic as well as number theoretic functionality.
7 *
8 * The library was designed directly after the MPI library by
9 * Michael Fromberger but has been written from scratch with
10 * additional optimizations in place.
11 *
12 * The library is free for all purposes without any express
13 * guarantee it works.
14 *
15 * Tom St Denis, tomstdenis@gmail.com, http://libtom.org
16 */
17
18/* determines the setup value */
19void mp_dr_setup(mp_int *a, mp_digit *d)
20{
21   /* the casts are required if DIGIT_BIT is one less than
22    * the number of bits in a mp_digit [e.g. DIGIT_BIT==31]
23    */
24   *d = (mp_digit)((((mp_word)1) << ((mp_word)DIGIT_BIT)) -
25        ((mp_word)a->dp[0]));
26}
27
28#endif
29
30/* $Source$ */
31/* $Revision$ */
32/* $Date$ */
33