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40 lines
810 B
40 lines
810 B
#include "tommath_private.h"
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#ifdef BN_MP_CMP_MAG_C
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/* LibTomMath, multiple-precision integer library -- Tom St Denis */
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/* SPDX-License-Identifier: Unlicense */
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/* compare maginitude of two ints (unsigned) */
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mp_ord mp_cmp_mag(const mp_int *a, const mp_int *b)
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{
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int n;
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const mp_digit *tmpa, *tmpb;
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/* compare based on # of non-zero digits */
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if (a->used > b->used) {
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return MP_GT;
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}
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if (a->used < b->used) {
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return MP_LT;
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}
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/* alias for a */
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tmpa = a->dp + (a->used - 1);
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/* alias for b */
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tmpb = b->dp + (a->used - 1);
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/* compare based on digits */
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for (n = 0; n < a->used; ++n, --tmpa, --tmpb) {
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if (*tmpa > *tmpb) {
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return MP_GT;
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}
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if (*tmpa < *tmpb) {
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return MP_LT;
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}
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}
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return MP_EQ;
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}
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#endif
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