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https://github.com/clearml/dropbear
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32 lines
866 B
C
32 lines
866 B
C
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#include <tommath.h>
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#ifdef BN_MP_SHRINK_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, tomstdenis@iahu.ca, http://math.libtomcrypt.org
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*/
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/* shrink a bignum */
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int mp_shrink (mp_int * a)
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{
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mp_digit *tmp;
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if (a->alloc != a->used && a->used > 0) {
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if ((tmp = OPT_CAST(mp_digit) XREALLOC (a->dp, sizeof (mp_digit) * a->used)) == NULL) {
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return MP_MEM;
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}
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a->dp = tmp;
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a->alloc = a->used;
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}
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return MP_OKAY;
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}
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#endif
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