diff options
Diffstat (limited to 'source4/heimdal/lib/hcrypto/libtommath/bn_mp_shrink.c')
| -rw-r--r-- | source4/heimdal/lib/hcrypto/libtommath/bn_mp_shrink.c | 45 |
1 files changed, 16 insertions, 29 deletions
diff --git a/source4/heimdal/lib/hcrypto/libtommath/bn_mp_shrink.c b/source4/heimdal/lib/hcrypto/libtommath/bn_mp_shrink.c index 4b8c5ef11ad..cf27ed9ec38 100644 --- a/source4/heimdal/lib/hcrypto/libtommath/bn_mp_shrink.c +++ b/source4/heimdal/lib/hcrypto/libtommath/bn_mp_shrink.c @@ -1,35 +1,22 @@ -#include <tommath.h> +#include "tommath_private.h" #ifdef BN_MP_SHRINK_C -/* LibTomMath, multiple-precision integer library -- Tom St Denis - * - * LibTomMath is a library that provides multiple-precision - * integer arithmetic as well as number theoretic functionality. - * - * The library was designed directly after the MPI library by - * Michael Fromberger but has been written from scratch with - * additional optimizations in place. - * - * The library is free for all purposes without any express - * guarantee it works. - * - * Tom St Denis, tomstdenis@gmail.com, http://libtom.org - */ +/* LibTomMath, multiple-precision integer library -- Tom St Denis */ +/* SPDX-License-Identifier: Unlicense */ /* shrink a bignum */ -int mp_shrink (mp_int * a) +mp_err mp_shrink(mp_int *a) { - mp_digit *tmp; - if (a->alloc != a->used && a->used > 0) { - if ((tmp = OPT_CAST(mp_digit) XREALLOC (a->dp, sizeof (mp_digit) * a->used)) == NULL) { - return MP_MEM; - } - a->dp = tmp; - a->alloc = a->used; - } - return MP_OKAY; + mp_digit *tmp; + int alloc = MP_MAX(MP_MIN_PREC, a->used); + if (a->alloc != alloc) { + if ((tmp = (mp_digit *) MP_REALLOC(a->dp, + (size_t)a->alloc * sizeof(mp_digit), + (size_t)alloc * sizeof(mp_digit))) == NULL) { + return MP_MEM; + } + a->dp = tmp; + a->alloc = alloc; + } + return MP_OKAY; } #endif - -/* $Source: /cvs/libtom/libtommath/bn_mp_shrink.c,v $ */ -/* $Revision: 1.4 $ */ -/* $Date: 2006/12/28 01:25:13 $ */ |