kc3-lang/libtommath/mp_log_n.c

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• Hash : f6a7bedb
  Author :
  Date : 2019-10-29T20:52:29
  

  suffix _u32 -> _n of mp_(expt|log|root) functions, use int for now

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• mp_log_n.c

• #include "tommath_private.h"
  #ifdef MP_LOG_N_C
  /* LibTomMath, multiple-precision integer library -- Tom St Denis */
  /* SPDX-License-Identifier: Unlicense */
  
  mp_err mp_log_n(const mp_int *a, int base, int *c)
  {
     if (mp_isneg(a) || mp_iszero(a) || (base < 2) || (unsigned)base > (unsigned)MP_DIGIT_MAX) {
        return MP_VAL;
     }
  
     if (MP_HAS(S_MP_LOG_2EXPT) && MP_IS_2EXPT((mp_digit)base)) {
        *c = s_mp_log_2expt(a, (mp_digit)base);
        return MP_OKAY;
     }
  
     if (MP_HAS(S_MP_LOG_D) && (a->used == 1)) {
        *c = s_mp_log_d((mp_digit)base, a->dp[0]);
        return MP_OKAY;
     }
  
     if (MP_HAS(S_MP_LOG)) {
        return s_mp_log(a, (mp_digit)base, c);
     }
  
     return MP_VAL;
  }
  
  #endif
  

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