diff options
author | Matt Johnston <matt@ucc.asn.au> | 2007-01-11 03:14:55 +0000 |
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committer | Matt Johnston <matt@ucc.asn.au> | 2007-01-11 03:14:55 +0000 |
commit | 9d5ed350a749368c84254c11e7616ce3c891193a (patch) | |
tree | 6dacbff2e9f5c60a1568382db55c72dd6d2ce925 /libtommath/bn_mp_cmp_d.c | |
parent | ca52f070aecf91e75f6ae6c87d4ae1a2189ccb14 (diff) | |
parent | 5ea605d8de5b4438deb4fa86c5231710dd09f934 (diff) |
propagate from branch 'au.asn.ucc.matt.ltm.dropbear' (head 2af95f00ebd5bb7a28b3817db1218442c935388e)
to branch 'au.asn.ucc.matt.dropbear' (head ecd779509ef23a8cdf64888904fc9b31d78aa933)
--HG--
extra : convert_revision : d26d5eb2837f46b56a33fb0e7573aa0201abd4d5
Diffstat (limited to 'libtommath/bn_mp_cmp_d.c')
-rw-r--r-- | libtommath/bn_mp_cmp_d.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/libtommath/bn_mp_cmp_d.c b/libtommath/bn_mp_cmp_d.c new file mode 100644 index 0000000..20a19bc --- /dev/null +++ b/libtommath/bn_mp_cmp_d.c @@ -0,0 +1,44 @@ +#include <tommath.h> +#ifdef BN_MP_CMP_D_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://math.libtomcrypt.com + */ + +/* compare a digit */ +int mp_cmp_d(mp_int * a, mp_digit b) +{ + /* compare based on sign */ + if (a->sign == MP_NEG) { + return MP_LT; + } + + /* compare based on magnitude */ + if (a->used > 1) { + return MP_GT; + } + + /* compare the only digit of a to b */ + if (a->dp[0] > b) { + return MP_GT; + } else if (a->dp[0] < b) { + return MP_LT; + } else { + return MP_EQ; + } +} +#endif + +/* $Source: /cvs/libtom/libtommath/bn_mp_cmp_d.c,v $ */ +/* $Revision: 1.3 $ */ +/* $Date: 2006/03/31 14:18:44 $ */ |