kc3-lang/libtommath/bn_mp_fwrite.c

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• Hash : 71d1b7b9
  Author :
  Date : 2019-09-08T23:29:44
  

  make mp_to_radix return the count of characters of the converted number

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• bn_mp_fwrite.c

• #include "tommath_private.h"
  #ifdef BN_MP_FWRITE_C
  /* LibTomMath, multiple-precision integer library -- Tom St Denis */
  /* SPDX-License-Identifier: Unlicense */
  
  #ifndef MP_NO_FILE
  mp_err mp_fwrite(const mp_int *a, int radix, FILE *stream)
  {
     char *buf;
     mp_err err;
     int len;
     size_t written;
  
     /* TODO: this function is not in this PR */
     if (MP_HAS(MP_RADIX_SIZE_OVERESTIMATE)) {
        /* if ((err = mp_radix_size_overestimate(&t, base, &len)) != MP_OKAY)      goto LBL_ERR; */
     } else {
        if ((err = mp_radix_size(a, radix, &len)) != MP_OKAY) {
           return err;
        }
     }
  
     buf = (char *) MP_MALLOC((size_t)len);
     if (buf == NULL) {
        return MP_MEM;
     }
  
     if ((err = mp_to_radix(a, buf, (size_t)len, &written, radix)) != MP_OKAY) {
        goto LBL_ERR;
     }
  
     if (fwrite(buf, written, 1uL, stream) != 1uL) {
        err = MP_ERR;
        goto LBL_ERR;
     }
     err = MP_OKAY;
  
  
  LBL_ERR:
     MP_FREE_BUFFER(buf, (size_t)len);
     return err;
  }
  #endif
  
  #endif
  

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