kc3-lang/libtommath/s_mp_get_bit.c

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• Hash : 7a68f128
  Author :
  Date : 2019-10-19T16:24:39
  

  Execute move.sh - Rename files from bn_* to match the function names. * git blame <renamed-file> is not affected * git log --follow <renamed-file> can be used to show log across renames

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• s_mp_get_bit.c

• #include "tommath_private.h"
  #ifdef 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
  

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