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author | William Joye <wjoye@cfa.harvard.edu> | 2018-12-25 17:48:54 (GMT) |
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committer | William Joye <wjoye@cfa.harvard.edu> | 2018-12-25 17:48:54 (GMT) |
commit | 8eb0f61e2e27ef6594eee8bcf68d574fb087fe66 (patch) | |
tree | fc0f3692516c8c3e8090df20223d342a1b64df93 /tcl8.6/libtommath/bn_mp_cmp_d.c | |
parent | 5f5fd2864a3193a8d5da12fcb92ba7379084c286 (diff) | |
download | blt-8eb0f61e2e27ef6594eee8bcf68d574fb087fe66.zip blt-8eb0f61e2e27ef6594eee8bcf68d574fb087fe66.tar.gz blt-8eb0f61e2e27ef6594eee8bcf68d574fb087fe66.tar.bz2 |
update tcl/tk
Diffstat (limited to 'tcl8.6/libtommath/bn_mp_cmp_d.c')
-rw-r--r-- | tcl8.6/libtommath/bn_mp_cmp_d.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/tcl8.6/libtommath/bn_mp_cmp_d.c b/tcl8.6/libtommath/bn_mp_cmp_d.c new file mode 100644 index 0000000..ecec091 --- /dev/null +++ b/tcl8.6/libtommath/bn_mp_cmp_d.c @@ -0,0 +1,40 @@ +#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(const 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 |