| #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@iahu.ca, http://math.libtomcrypt.org |
| */ |
| |
| /* compare two ints (signed)*/ |
| int |
| mp_cmp (mp_int * a, 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 |