Mercurial > dropbear
view libtommath/bn_mp_abs.c @ 496:9f583f4d59a6
propagate from branch 'au.asn.ucc.matt.dropbear.pubkey-options' (head 537a6ebebb46424b967ffe787f0f8560e5f447e8)
to branch 'au.asn.ucc.matt.dropbear' (head 10b2f286b9886364db39dfbb4f8f46e49e345d87)
author | Matt Johnston <matt@ucc.asn.au> |
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date | Tue, 23 Sep 2008 13:16:22 +0000 |
parents | 5ff8218bcee9 |
children | 60fc6476e044 |
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#include <tommath.h> #ifdef BN_MP_ABS_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.com */ /* b = |a| * * Simple function copies the input and fixes the sign to positive */ int mp_abs (mp_int * a, mp_int * b) { int res; /* copy a to b */ if (a != b) { if ((res = mp_copy (a, b)) != MP_OKAY) { return res; } } /* force the sign of b to positive */ b->sign = MP_ZPOS; return MP_OKAY; } #endif /* $Source: /cvs/libtom/libtommath/bn_mp_abs.c,v $ */ /* $Revision: 1.3 $ */ /* $Date: 2006/03/31 14:18:44 $ */