1 #include "tommath_private.h"
2 #ifdef BN_S_MP_GET_BIT_C
4 /* LibTomMath, multiple-precision integer library -- Tom St Denis */
5 /* SPDX-License-Identifier: Unlicense */
7 /* Get bit at position b and return MP_YES if the bit is 1, MP_NO if it is 0 */
8 mp_bool s_mp_get_bit(const mp_int *a, unsigned int b)
11 int limb = (int)(b / MP_DIGIT_BIT);
13 if (limb >= a->used) {
17 bit = (mp_digit)1 << (b % MP_DIGIT_BIT);
18 return ((a->dp[limb] & bit) != 0u) ? MP_YES : MP_NO;