| #include <tommath.h> |
| #ifdef BN_MP_DR_SETUP_C |
| /* LibTomMath, multiple-precision integer library -- Tom St Denis |
| * |
| * LibTomMath is a library that provides multiple-precision |
| * integer arithmetic as well as number theoretic functionality. |
| * |
| * The library was designed directly after the MPI library by |
| * Michael Fromberger but has been written from scratch with |
| * additional optimizations in place. |
| * |
| * The library is free for all purposes without any express |
| * guarantee it works. |
| * |
| * Tom St Denis, tomstdenis@gmail.com, http://math.libtomcrypt.com |
| */ |
| |
| /* determines the setup value */ |
| void mp_dr_setup(mp_int *a, mp_digit *d) |
| { |
| /* the casts are required if DIGIT_BIT is one less than |
| * the number of bits in a mp_digit [e.g. DIGIT_BIT==31] |
| */ |
| *d = (mp_digit)((((mp_word)1) << ((mp_word)DIGIT_BIT)) - |
| ((mp_word)a->dp[0])); |
| } |
| |
| #endif |
| |
| /* $Source: /cvs/libtom/libtommath/bn_mp_dr_setup.c,v $ */ |
| /* $Revision: 1.3 $ */ |
| /* $Date: 2006/03/31 14:18:44 $ */ |
