t7x/deps/libtommath/mp_cmp_d.c
2023-12-06 17:43:39 -05:00

27 lines
531 B
C

#include "tommath_private.h"
#ifdef MP_CMP_D_C
/* LibTomMath, multiple-precision integer library -- Tom St Denis */
/* SPDX-License-Identifier: Unlicense */
/* compare a digit */
mp_ord mp_cmp_d(const mp_int *a, mp_digit b)
{
/* compare based on sign */
if (mp_isneg(a)) {
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 a->dp[0] > b ? MP_GT : MP_LT;
}
return MP_EQ;
}
#endif