diff options
Diffstat (limited to 'libtommath/bn_mp_shrink.c')
| -rw-r--r-- | libtommath/bn_mp_shrink.c | 36 |
1 files changed, 9 insertions, 27 deletions
diff --git a/libtommath/bn_mp_shrink.c b/libtommath/bn_mp_shrink.c index fa30184..cf27ed9 100644 --- a/libtommath/bn_mp_shrink.c +++ b/libtommath/bn_mp_shrink.c @@ -1,40 +1,22 @@ #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. - * - * SPDX-License-Identifier: Unlicense - */ +/* 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; - int used = 1; - - if (a->used > 0) { - used = a->used; - } - - if (a->alloc != used) { - if ((tmp = (mp_digit *) XREALLOC(a->dp, - (size_t)a->alloc * sizeof (mp_digit), - (size_t)used * sizeof(mp_digit))) == NULL) { + 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 = used; + a->alloc = alloc; } return MP_OKAY; } #endif - -/* ref: $Format:%D$ */ -/* git commit: $Format:%H$ */ -/* commit time: $Format:%ai$ */ |