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#include "tommath_private.h"
#ifdef MP_SHRINK_C
/* LibTomMath, multiple-precision integer library -- Tom St Denis */
/* SPDX-License-Identifier: Unlicense */
/* shrink a bignum */
mp_err mp_shrink(mp_int *a)
{
int alloc = MP_MAX(MP_MIN_DIGIT_COUNT, a->used);
if (a->alloc != alloc) {
mp_digit *dp = (mp_digit *) MP_REALLOC(a->dp,
(size_t)a->alloc * sizeof(mp_digit),
(size_t)alloc * sizeof(mp_digit));
if (dp == NULL) {
return MP_MEM;
}
a->dp = dp;
a->alloc = alloc;
}
return MP_OKAY;
}
#endif
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