Mercurial > dropbear
diff libtommath/bn_mp_copy.c @ 1692:1051e4eea25a
Update LibTomMath to 1.2.0 (#84)
* update C files
* update other files
* update headers
* update makefiles
* remove mp_set/get_double()
* use ltm 1.2.0 API
* update ltm_desc
* use bundled tommath if system-tommath is too old
* XMALLOC etc. were changed to MP_MALLOC etc.
| author | Steffen Jaeckel <s@jaeckel.eu> |
|---|---|
| date | Tue, 26 May 2020 17:36:47 +0200 |
| parents | f52919ffd3b1 |
| children |
line wrap: on
line diff
--- a/libtommath/bn_mp_copy.c Tue May 26 23:27:26 2020 +0800 +++ b/libtommath/bn_mp_copy.c Tue May 26 17:36:47 2020 +0200 @@ -1,21 +1,14 @@ #include "tommath_private.h" #ifdef BN_MP_COPY_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 */ /* copy, b = a */ -int mp_copy(const mp_int *a, mp_int *b) +mp_err mp_copy(const mp_int *a, mp_int *b) { - int res, n; + int n; + mp_digit *tmpa, *tmpb; + mp_err err; /* if dst == src do nothing */ if (a == b) { @@ -24,33 +17,27 @@ /* grow dest */ if (b->alloc < a->used) { - if ((res = mp_grow(b, a->used)) != MP_OKAY) { - return res; + if ((err = mp_grow(b, a->used)) != MP_OKAY) { + return err; } } /* zero b and copy the parameters over */ - { - mp_digit *tmpa, *tmpb; - - /* pointer aliases */ + /* pointer aliases */ - /* source */ - tmpa = a->dp; + /* source */ + tmpa = a->dp; - /* destination */ - tmpb = b->dp; + /* destination */ + tmpb = b->dp; - /* copy all the digits */ - for (n = 0; n < a->used; n++) { - *tmpb++ = *tmpa++; - } + /* copy all the digits */ + for (n = 0; n < a->used; n++) { + *tmpb++ = *tmpa++; + } - /* clear high digits */ - for (; n < b->used; n++) { - *tmpb++ = 0; - } - } + /* clear high digits */ + MP_ZERO_DIGITS(tmpb, b->used - n); /* copy used count and sign */ b->used = a->used; @@ -58,7 +45,3 @@ return MP_OKAY; } #endif - -/* ref: HEAD -> master, tag: v1.1.0 */ -/* git commit: 08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */ -/* commit time: 2019-01-28 20:32:32 +0100 */