kc3-lang/libtommath/bn_mp_n_root.c

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• Hash : 52cfd5ff
  Author :
  Date : 2014-02-14T11:26:07
  

  mp_n_root: add mp_n_root_ex() with parameter 'fast' for mp_expt_d_ex()
  
  This change is introduced to be able to choose the underlying
  implementation of mp_expt_d_ex()
  
  The implementation of the root_n functionality is now implemented in the
  mp_n_root_ex() function.
  
  The parameter 'fast' is just passed over to mp_expt_d_ex().
  
  mp_n_root() defaults to the pre 921be35779f7d71080ad85c27ed58671602d59b3
  implementation
  

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• bn_mp_n_root.c

• #include <tommath.h>
  #ifdef BN_MP_N_ROOT_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://libtom.org
   */
  
  /* wrapper function for mp_n_root_ex()
   * computes c = (a)**(1/b) such that (c)**b <= a and (c+1)**b > a
   */
  int mp_n_root (mp_int * a, mp_digit b, mp_int * c)
  {
    return mp_n_root_ex(a, b, c, 0);
  }
  
  #endif
  
  /* $Source$ */
  /* $Revision$ */
  /* $Date$ */
  

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