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49 lines
1.1 KiB
49 lines
1.1 KiB
#include <tommath_private.h>
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#ifdef BN_MP_INIT_SIZE_C
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/* LibTomMath, multiple-precision integer library -- Tom St Denis
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*
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* LibTomMath is a library that provides multiple-precision
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* integer arithmetic as well as number theoretic functionality.
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*
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* The library was designed directly after the MPI library by
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* Michael Fromberger but has been written from scratch with
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* additional optimizations in place.
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*
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* The library is free for all purposes without any express
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* guarantee it works.
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*
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* Tom St Denis, tstdenis82@gmail.com, http://libtom.org
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*/
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/* init an mp_init for a given size */
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int mp_init_size (mp_int * a, int size)
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{
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int x;
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/* pad size so there are always extra digits */
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size += (MP_PREC * 2) - (size % MP_PREC);
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/* alloc mem */
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a->dp = OPT_CAST(mp_digit) XMALLOC (sizeof (mp_digit) * size);
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if (a->dp == NULL) {
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return MP_MEM;
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}
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/* set the members */
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a->used = 0;
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a->alloc = size;
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a->sign = MP_ZPOS;
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/* zero the digits */
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for (x = 0; x < size; x++) {
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a->dp[x] = 0;
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}
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return MP_OKAY;
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}
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#endif
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/* ref: $Format:%D$ */
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/* git commit: $Format:%H$ */
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/* commit time: $Format:%ai$ */
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