24 lines
828 B
C
24 lines
828 B
C
#include "amplify_tommath_private.h"
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#ifdef AMPLIFY_BN_MP_SHRINK_C
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/* LibTomMath, multiple-precision integer library -- Tom St Denis */
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/* SPDX-License-Identifier: Unlicense */
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/* Modifications Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. */
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/* shrink a bignum */
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amplify_mp_err amplify_mp_shrink(amplify_mp_int *a)
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{
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amplify_mp_digit *tmp;
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int alloc = AMPLIFY_MP_MAX(AMPLIFY_MP_MIN_PREC, a->used);
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if (a->alloc != alloc) {
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if ((tmp = (amplify_mp_digit *) AMPLIFY_MP_REALLOC(a->dp,
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(size_t)a->alloc * sizeof(amplify_mp_digit),
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(size_t)alloc * sizeof(amplify_mp_digit))) == NULL) {
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return AMPLIFY_MP_MEM;
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}
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a->dp = tmp;
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a->alloc = alloc;
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}
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return AMPLIFY_MP_OKAY;
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}
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#endif
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