kc3-lang/libtommath/mp_to_ubin.c

• Show log

  Commit

• Hash : b9977adf
  Author :
  Date : 2019-10-29T08:44:51
  

  use uint8_t instead of unsigned char

Download

• mp_to_ubin.c

• #include "tommath_private.h"
  #ifdef MP_TO_UBIN_C
  /* LibTomMath, multiple-precision integer library -- Tom St Denis */
  /* SPDX-License-Identifier: Unlicense */
  
  /* store in unsigned [big endian] format */
  mp_err mp_to_ubin(const mp_int *a, uint8_t *buf, size_t maxlen, size_t *written)
  {
     size_t  x, count;
     mp_err  err;
     mp_int  t;
  
     count = mp_ubin_size(a);
     if (count > maxlen) {
        return MP_BUF;
     }
  
     if ((err = mp_init_copy(&t, a)) != MP_OKAY) {
        return err;
     }
  
     for (x = count; x --> 0u;) {
        buf[x] = (uint8_t)(t.dp[0] & 255u);
        if ((err = mp_div_2d(&t, 8, &t, NULL)) != MP_OKAY) {
           goto LBL_ERR;
        }
     }
  
     if (written != NULL) {
        *written = count;
     }
  
  LBL_ERR:
     mp_clear(&t);
     return err;
  }
  #endif
  

Download