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Giac_maj/libtommath-0.39/bn_mp_fwrite.c 1.2 KB
6663b6c9   adorian   projet complet av...
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  #include <tommath.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.
   *
   * The library is free for all purposes without any express
   * guarantee it works.
   *
   * Tom St Denis, tomstdenis@gmail.com, http://math.libtomcrypt.com
   */
  
  int mp_fwrite(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 = OPT_CAST(char) XMALLOC (len);
     if (buf == NULL) {
        return MP_MEM;
     }
     
     if ((err = mp_toradix(a, buf, radix)) != MP_OKAY) {
        XFREE (buf);
        return err;
     }
     
     for (x = 0; x < len; x++) {
         if (fputc(buf[x], stream) == EOF) {
            XFREE (buf);
            return MP_VAL;
         }
     }
     
     XFREE (buf);
     return MP_OKAY;
  }
  
  #endif
  
  /* $Source: /cvs/libtom/libtommath/bn_mp_fwrite.c,v $ */
  /* $Revision: 1.3 $ */
  /* $Date: 2006/03/31 14:18:44 $ */