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#include "tommath_private.h"
#ifdef BN_MP_INIT_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.
 */

/* init a new mp_int */
int mp_init(mp_int *a)
{
   int i;

   /* allocate memory required and clear it */
   a->dp = OPT_CAST(mp_digit) XMALLOC(sizeof(mp_digit) * (size_t)MP_PREC);
   if (a->dp == NULL) {
      return MP_MEM;
   }

   /* set the digits to zero */
   for (i = 0; i < MP_PREC; i++) {
      a->dp[i] = 0;
   }

   /* set the used to zero, allocated digits to the default precision
    * and sign to positive */
   a->used  = 0;
   a->alloc = MP_PREC;
   a->sign  = MP_ZPOS;

   return MP_OKAY;
}
#endif

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kc3-lang/libtommath/bn_mp_init.c

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bn_mp_init.c
