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1 /* LibTomMath, multiple-precision integer library -- Tom St Denis |
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2 * |
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3 * LibTomMath is a library that provides multiple-precision |
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4 * integer arithmetic as well as number theoretic functionality. |
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5 * |
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6 * The library was designed directly after the MPI library by |
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7 * Michael Fromberger but has been written from scratch with |
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8 * additional optimizations in place. |
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9 * |
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10 * The library is free for all purposes without any express |
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11 * guarantee it works. |
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12 * |
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13 * Tom St Denis, [email protected], http://math.libtomcrypt.org |
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14 */ |
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15 #include <tommath.h> |
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16 |
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17 /* compare two ints (signed)*/ |
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18 int |
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19 mp_cmp (mp_int * a, mp_int * b) |
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20 { |
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21 /* compare based on sign */ |
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22 if (a->sign != b->sign) { |
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23 if (a->sign == MP_NEG) { |
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24 return MP_LT; |
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25 } else { |
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26 return MP_GT; |
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27 } |
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28 } |
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29 |
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30 /* compare digits */ |
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31 if (a->sign == MP_NEG) { |
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32 /* if negative compare opposite direction */ |
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33 return mp_cmp_mag(b, a); |
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34 } else { |
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35 return mp_cmp_mag(a, b); |
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36 } |
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37 } |
