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/* 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@iahu.ca, http://math.libtomcrypt.org
*/
#include <tommath.h>

/* init a new bigint */
int mp_init (mp_int * a)
{
  /* allocate memory required and clear it */
  a->dp = OPT_CAST(mp_digit) XCALLOC (sizeof (mp_digit), MP_PREC);
  if (a->dp == NULL) {
    return MP_MEM;
  }

  /* 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;
}
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