crypto/external/bsd/heimdal/dist/lib/hcrypto/libtommath/bn_mp_init.c

   1 /*      $NetBSD: bn_mp_init.c,v 1.1.1.2 2014/04/24 12:45:31 pettai Exp $        */
   2
   3 #include <tommath.h>
   4 #ifdef BN_MP_INIT_C
   5 /* LibTomMath, multiple-precision integer library -- Tom St Denis
   6  *
   7  * LibTomMath is a library that provides multiple-precision
   8  * integer arithmetic as well as number theoretic functionality.
   9  *
  10  * The library was designed directly after the MPI library by
  11  * Michael Fromberger but has been written from scratch with
  12  * additional optimizations in place.
  13  *
  14  * The library is free for all purposes without any express
  15  * guarantee it works.
  16  *
  17  * Tom St Denis, tomstdenis@gmail.com, http://libtom.org
  18  */
  19
  20 /* init a new mp_int */
  21 int mp_init (mp_int * a)
  22 {
  23   int i;
  24
  25   /* allocate memory required and clear it */
  26   a->dp = OPT_CAST(mp_digit) XMALLOC (sizeof (mp_digit) * MP_PREC);
  27   if (a->dp == NULL) {
  28     return MP_MEM;
  29   }
  30
  31   /* set the digits to zero */
  32   for (i = 0; i < MP_PREC; i++) {
  33       a->dp[i] = 0;
  34   }
  35
  36   /* set the used to zero, allocated digits to the default precision
  37    * and sign to positive */
  38   a->used  = 0;
  39   a->alloc = MP_PREC;
  40   a->sign  = MP_ZPOS;
  41
  42   return MP_OKAY;
  43 }
  44 #endif
  45
  46 /* Source: /cvs/libtom/libtommath/bn_mp_init.c,v  */
  47 /* Revision: 1.4  */
  48 /* Date: 2006/12/28 01:25:13  */