Mercurial > dropbear
view libtommath/bn_mp_shrink.c @ 364:90cb290836de channel-fix
Passes most test cases now
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Mon, 09 Oct 2006 16:31:00 +0000 |
parents | eed26cff980b |
children | 5ff8218bcee9 |
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#include <tommath.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, [email protected], http://math.libtomcrypt.org */ /* shrink a bignum */ int 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; } #endif