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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,,
#include <tommath.h>
/* init a new bigint */
mp_init (mp_int * a)
/* allocate memory required and clear it */
a->dp = OPT_CAST calloc (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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