47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
#include "tommath_private.h"
|
|
#ifdef BN_MP_INIT_SIZE_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 an mp_init for a given size */
|
|
int mp_init_size(mp_int *a, int size)
|
|
{
|
|
int x;
|
|
|
|
/* pad size so there are always extra digits */
|
|
size += (MP_PREC * 2) - (size % MP_PREC);
|
|
|
|
/* alloc mem */
|
|
a->dp = OPT_CAST(mp_digit) XMALLOC(sizeof(mp_digit) * (size_t)size);
|
|
if (a->dp == NULL) {
|
|
return MP_MEM;
|
|
}
|
|
|
|
/* set the members */
|
|
a->used = 0;
|
|
a->alloc = size;
|
|
a->sign = MP_ZPOS;
|
|
|
|
/* zero the digits */
|
|
for (x = 0; x < size; x++) {
|
|
a->dp[x] = 0;
|
|
}
|
|
|
|
return MP_OKAY;
|
|
}
|
|
#endif
|
|
|
|
/* ref: $Format:%D$ */
|
|
/* git commit: $Format:%H$ */
|
|
/* commit time: $Format:%ai$ */
|