c3-lang/libtommath/bn_mp_dr_setup.c

• Show log

  Commit

• Hash : 079b0f65
  Author :
  Date : 2015-10-30T17:55:29
  

  Getting ready for v0.43.0 release Also updated my email address... Signed-off-by: Tom St Denis <tstdenis82@gmail.com>

Download

• bn_mp_dr_setup.c

• #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, tstdenis82@gmail.com, http://libtom.org
   */
  
  /* 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
  
  /* $Source$ */
  /* $Revision$ */
  /* $Date$ */
  

Download