kc3-lang/libtommath/bn_mp_fwrite.c

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• Hash : db9a47d5
  Author :
  Date : 2019-04-04T11:01:08
  

  allocation functions: pass size to XREALLOC and XFREE This is similar to the signatures of the custom allocation functions provided by GMP. The allocation sizes are useful if the allocator has no easy way to access the allocation size.

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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
   *
   * LibTomMath is a library that provides multiple-precision
   * integer arithmetic as well as number theoretic functionality.
   *
   * The library was designed directly after the MPI library by
   * Michael Fromberger but has been written from scratch with
   * additional optimizations in place.
   *
   * SPDX-License-Identifier: Unlicense
   */
  
  #ifndef LTM_NO_FILE
  int mp_fwrite(const mp_int *a, int radix, FILE *stream)
  {
     char *buf;
     int err, len, x;
  
     if ((err = mp_radix_size(a, radix, &len)) != MP_OKAY) {
        return err;
     }
  
     buf = (char *) XMALLOC((size_t)len);
     if (buf == NULL) {
        return MP_MEM;
     }
  
     if ((err = mp_toradix(a, buf, radix)) != MP_OKAY) {
        XFREE(buf, len);
        return err;
     }
  
     for (x = 0; x < len; x++) {
        if (fputc((int)buf[x], stream) == EOF) {
           XFREE(buf, len);
           return MP_VAL;
        }
     }
  
     XFREE(buf, len);
     return MP_OKAY;
  }
  #endif
  
  #endif
  
  /* ref:         $Format:%D$ */
  /* git commit:  $Format:%H$ */
  /* commit time: $Format:%ai$ */
  

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