39 lines
919 B
C
39 lines
919 B
C
#include "tommath_private.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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* SPDX-License-Identifier: Unlicense
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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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int used = 1;
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if (a->used > 0) {
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used = a->used;
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}
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if (a->alloc != used) {
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if ((tmp = OPT_CAST(mp_digit) XREALLOC(a->dp, sizeof(mp_digit) * (size_t)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 = 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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/* ref: $Format:%D$ */
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/* git commit: $Format:%H$ */
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/* commit time: $Format:%ai$ */
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