Artifact 1f6fa4278a745e48c94f4b22282aea5000fc460bbc3c49262ac8da33be7fe685:

• File libtommath/bn_s_mp_get_bit.c — part of check-in [94cf70186e] at 2019-06-13 19:07:13 on branch libtommath — Update to latest libtommath's "develop" branch. On the way to 1.2.0 (user: jan.nijtmans size: 521) [more...]

#include "tommath_private.h"
#ifdef BN_S_MP_GET_BIT_C

/* LibTomMath, multiple-precision integer library -- Tom St Denis */
/* SPDX-License-Identifier: Unlicense */

/* Get bit at position b and return MP_YES if the bit is 1, MP_NO if it is 0 */
mp_bool s_mp_get_bit(const mp_int *a, unsigned int b)
{
   mp_digit bit;
   int limb = (int)(b / MP_DIGIT_BIT);

   if (limb >= a->used) {
      return MP_NO;
   }

   bit = (mp_digit)1 << (b % MP_DIGIT_BIT);
   return ((a->dp[limb] & bit) != 0u) ? MP_YES : MP_NO;
}

#endif