kc3-lang/libtommath/mp_clear.c

• Show log

  Commit

• Hash : 795cd201
  Author :
  Date : 2019-10-29T21:48:50
  

  simplifications: add s_mp_zero_(digs|buf) and s_mp_copy_digs Originally I made those as macros. However we have many other small functions like mp_clamp, mp_exch which are also not implemented as macros right now. If we would use c99, I would implement them as private static inline functions. And mp_exch would be a public static inline function. But since we are bound to c89, we simply use normal functions. To achieve optimal performance one should either use link time optimization or amalgamation.

Download

• mp_clear.c

• #include "tommath_private.h"
  #ifdef MP_CLEAR_C
  /* LibTomMath, multiple-precision integer library -- Tom St Denis */
  /* SPDX-License-Identifier: Unlicense */
  
  /* clear one (frees)  */
  void mp_clear(mp_int *a)
  {
     /* only do anything if a hasn't been freed previously */
     if (a->dp != NULL) {
        /* free ram */
        MP_FREE_DIGS(a->dp, a->alloc);
  
        /* reset members to make debugging easier */
        a->dp    = NULL;
        a->alloc = a->used = 0;
        a->sign  = MP_ZPOS;
     }
  }
  #endif
  

Download