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author | William Joye <wjoye@cfa.harvard.edu> | 2018-01-02 21:03:49 (GMT) |
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committer | William Joye <wjoye@cfa.harvard.edu> | 2018-01-02 21:03:49 (GMT) |
commit | 914501b5b992e7b6c7e0a4c958712a8ba9cab41c (patch) | |
tree | edbc059b9557d5fdb79e5a5c47889bc54708da53 /tcl8.6/libtommath/bn_mp_cmp.c | |
parent | f88c190a01bc7f57e79dfaf91a3c0c48c2031549 (diff) | |
download | blt-914501b5b992e7b6c7e0a4c958712a8ba9cab41c.zip blt-914501b5b992e7b6c7e0a4c958712a8ba9cab41c.tar.gz blt-914501b5b992e7b6c7e0a4c958712a8ba9cab41c.tar.bz2 |
upgrade to tcl/tk 8.6.8
Diffstat (limited to 'tcl8.6/libtommath/bn_mp_cmp.c')
-rw-r--r-- | tcl8.6/libtommath/bn_mp_cmp.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/tcl8.6/libtommath/bn_mp_cmp.c b/tcl8.6/libtommath/bn_mp_cmp.c new file mode 100644 index 0000000..943249d --- /dev/null +++ b/tcl8.6/libtommath/bn_mp_cmp.c @@ -0,0 +1,39 @@ +#include <tommath.h> +#ifdef BN_MP_CMP_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 two ints (signed)*/ +int +mp_cmp (const mp_int * a, const mp_int * b) +{ + /* compare based on sign */ + if (a->sign != b->sign) { + if (a->sign == MP_NEG) { + return MP_LT; + } else { + return MP_GT; + } + } + + /* compare digits */ + if (a->sign == MP_NEG) { + /* if negative compare opposite direction */ + return mp_cmp_mag(b, a); + } else { + return mp_cmp_mag(a, b); + } +} +#endif |