Mercurial > dropbear
view libtommath/bn_mp_cmp_mag.c @ 1860:5001e9c5641f
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author | Matt Johnston <matt@ucc.asn.au> |
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date | Thu, 27 Jan 2022 15:09:29 +0800 |
parents | 1051e4eea25a |
children |
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#include "tommath_private.h" #ifdef BN_MP_CMP_MAG_C /* LibTomMath, multiple-precision integer library -- Tom St Denis */ /* SPDX-License-Identifier: Unlicense */ /* compare maginitude of two ints (unsigned) */ mp_ord mp_cmp_mag(const mp_int *a, const mp_int *b) { int n; const mp_digit *tmpa, *tmpb; /* compare based on # of non-zero digits */ if (a->used > b->used) { return MP_GT; } if (a->used < b->used) { return MP_LT; } /* alias for a */ tmpa = a->dp + (a->used - 1); /* alias for b */ tmpb = b->dp + (a->used - 1); /* compare based on digits */ for (n = 0; n < a->used; ++n, --tmpa, --tmpb) { if (*tmpa > *tmpb) { return MP_GT; } if (*tmpa < *tmpb) { return MP_LT; } } return MP_EQ; } #endif