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Diff for /OpenXM_contrib/gmp/mpz/Attic/out_raw.c between version 1.1.1.1 and 1.1.1.3

version 1.1.1.1, 2000/01/10 15:35:27 version 1.1.1.3, 2003/08/25 16:06:33
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 /* mpz_out_raw -- Output a mpz_t in binary.  Use an endianess and word size  /* mpz_out_raw -- write an mpz_t in raw format.
    independent format.  
   
 Copyright (C) 1995 Free Software Foundation, Inc.  Copyright 2001, 2002 Free Software Foundation, Inc.
   
 This file is part of the GNU MP Library.  This file is part of the GNU MP Library.
   
 The GNU MP Library is free software; you can redistribute it and/or modify  The GNU MP Library is free software; you can redistribute it and/or modify
 it under the terms of the GNU Library General Public License as published by  it under the terms of the GNU Lesser General Public License as published by
 the Free Software Foundation; either version 2 of the License, or (at your  the Free Software Foundation; either version 2.1 of the License, or (at your
 option) any later version.  option) any later version.
   
 The GNU MP Library is distributed in the hope that it will be useful, but  The GNU MP Library is distributed in the hope that it will be useful, but
 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
 License for more details.  License for more details.
   
 You should have received a copy of the GNU Library General Public License  You should have received a copy of the GNU Lesser General Public License
 along with the GNU MP Library; see the file COPYING.LIB.  If not, write to  along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,  the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 MA 02111-1307, USA. */  MA 02111-1307, USA. */
   
 #include <stdio.h>  #include <stdio.h>
   
 #include "gmp.h"  #include "gmp.h"
 #include "gmp-impl.h"  #include "gmp-impl.h"
   #include "longlong.h"
   
 size_t  
 #if __STDC__  /* HTON_LIMB_STORE takes a normal host byte order limb and stores it as
 mpz_out_raw (FILE *stream, mpz_srcptr x)     network byte order (ie. big endian). */
 #else  
 mpz_out_raw (stream, x)  #if HAVE_LIMB_BIG_ENDIAN
      FILE *stream;  #define HTON_LIMB_STORE(dst, limb)  do { *(dst) = (limb); } while (0)
      mpz_srcptr x;  
 #endif  #endif
   
   /* The generic implementations below very likely come out as lots of
      separate byte stores, so if we know the host is little endian then
      instead use a purely arithmetic BSWAP_LIMB and a single store.  */
   #if HAVE_LIMB_LITTLE_ENDIAN
   #define HTON_LIMB_STORE(dst, limb)  BSWAP_LIMB_STORE (dst, limb)
   #endif
   
   #if ! defined (HTON_LIMB_STORE)
   #if BITS_PER_MP_LIMB == 8
   #define HTON_LIMB_STORE(dst, limb)  do { *(dst) = (limb); } while (0)
   #endif
   #if BITS_PER_MP_LIMB == 16
   #define HTON_LIMB_STORE(dst, limb)      \
     do {                                  \
       mp_limb_t  __limb = (limb);         \
       char  *__p = (char *) (dst);        \
       __p[1] = (__limb);                  \
       __p[0] = (__limb) >> 8;             \
     } while (0)
   #endif
   #if BITS_PER_MP_LIMB == 32
   #define HTON_LIMB_STORE(dst, limb)      \
     do {                                  \
       mp_limb_t  __limb = (limb);         \
       char  *__p = (char *) (dst);        \
       __p[3] = (__limb);                  \
       __p[2] = (__limb) >> 8;             \
       __p[1] = (__limb) >> 16;            \
       __p[0] = (__limb) >> 24;            \
     } while (0)
   #endif
   #if BITS_PER_MP_LIMB == 64
   #define HTON_LIMB_STORE(dst, limb)      \
     do {                                  \
       mp_limb_t  __limb = (limb);         \
       char  *__p = (char *) (dst);        \
       __p[7] = (__limb);                  \
       __p[6] = (__limb) >> 8;             \
       __p[5] = (__limb) >> 16;            \
       __p[4] = (__limb) >> 24;            \
       __p[3] = (__limb) >> 32;            \
       __p[2] = (__limb) >> 40;            \
       __p[1] = (__limb) >> 48;            \
       __p[0] = (__limb) >> 56;            \
     } while (0)
   #endif
   #endif
   
   
   size_t
   mpz_out_raw (FILE *fp, mpz_srcptr x)
 {  {
   int i;    mp_size_t   xsize, abs_xsize, bytes, i;
   mp_size_t s;    mp_srcptr   xp;
   mp_size_t xsize = ABS (x->_mp_size);    char        *tp, *bp;
   mp_srcptr xp = x->_mp_d;    mp_limb_t   xlimb;
   mp_size_t out_bytesize;    int         zeros;
   mp_limb_t hi_limb;    size_t      tsize, ssize;
   int n_bytes_in_hi_limb;  
   
   if (stream == 0)    xsize = SIZ(x);
     stream = stdout;    abs_xsize = ABS (xsize);
     bytes = (abs_xsize * GMP_NUMB_BITS + 7) / 8;
     tsize = ROUND_UP_MULTIPLE ((unsigned) 4, BYTES_PER_MP_LIMB) + bytes;
   
   if (xsize == 0)    tp = __GMP_ALLOCATE_FUNC_TYPE (tsize, char);
     {    bp = tp + ROUND_UP_MULTIPLE ((unsigned) 4, BYTES_PER_MP_LIMB);
       for (i = 4 - 1; i >= 0; i--)  
         fputc (0, stream);  
       return ferror (stream) ? 0 : 4;  
     }  
   
   hi_limb = xp[xsize - 1];    if (bytes != 0)
   for (i = BYTES_PER_MP_LIMB - 1; i > 0; i--)  
     {      {
       if ((hi_limb >> i * BITS_PER_CHAR) != 0)        bp += bytes;
         break;        xp = PTR (x);
     }        i = abs_xsize;
   n_bytes_in_hi_limb = i + 1;  
   out_bytesize = BYTES_PER_MP_LIMB * (xsize - 1) + n_bytes_in_hi_limb;  
   if (x->_mp_size < 0)  
     out_bytesize = -out_bytesize;  
   
   /* Make the size 4 bytes on all machines, to make the format portable.  */        if (GMP_NAIL_BITS == 0)
   for (i = 4 - 1; i >= 0; i--)          {
     fputc ((out_bytesize >> (i * BITS_PER_CHAR)) % (1 << BITS_PER_CHAR),            /* reverse limb order, and byte swap if necessary */
            stream);  #ifdef _CRAY
             _Pragma ("_CRI ivdep");
   #endif
             do
               {
                 bp -= BYTES_PER_MP_LIMB;
                 xlimb = *xp;
                 HTON_LIMB_STORE ((mp_ptr) bp, xlimb);
                 xp++;
               }
             while (--i > 0);
   
   /* Output from the most significant limb to the least significant limb,            /* strip high zero bytes (without fetching from bp) */
      with each limb also output in decreasing significance order.  */            count_leading_zeros (zeros, xlimb);
             zeros /= 8;
             bp += zeros;
             bytes -= zeros;
           }
         else
           {
             mp_limb_t  new_xlimb;
             int        bits;
             ASSERT_CODE (char *bp_orig = bp - bytes);
   
   /* Output the most significant limb separately, since we will only            ASSERT_ALWAYS (GMP_NUMB_BITS >= 8);
      output some of its bytes.  */  
   for (i = n_bytes_in_hi_limb - 1; i >= 0; i--)  
     fputc ((hi_limb >> (i * BITS_PER_CHAR)) % (1 << BITS_PER_CHAR), stream);  
   
   /* Output the remaining limbs.  */            bits = 0;
   for (s = xsize - 2; s >= 0; s--)            xlimb = 0;
     {            for (;;)
       mp_limb_t x_limb;              {
                 while (bits >= 8)
                   {
                     ASSERT (bp > bp_orig);
                     *--bp = xlimb & 0xFF;
                     xlimb >>= 8;
                     bits -= 8;
                   }
   
       x_limb = xp[s];                if (i == 0)
       for (i = BYTES_PER_MP_LIMB - 1; i >= 0; i--)                  break;
         fputc ((x_limb >> (i * BITS_PER_CHAR)) % (1 << BITS_PER_CHAR), stream);  
                 new_xlimb = *xp++;
                 i--;
                 ASSERT (bp > bp_orig);
                 *--bp = (xlimb | (new_xlimb << bits)) & 0xFF;
                 xlimb = new_xlimb >> (8 - bits);
                 bits += GMP_NUMB_BITS - 8;
               }
   
             if (bits != 0)
               {
                 ASSERT (bp > bp_orig);
                 *--bp = xlimb;
               }
   
             ASSERT (bp == bp_orig);
             while (*bp == 0)
               {
                 bp++;
                 bytes--;
               }
           }
     }      }
   return ferror (stream) ? 0 : ABS (out_bytesize) + 4;  
     /* total bytes to be written */
     ssize = 4 + bytes;
   
     /* twos complement negative for the size value */
     bytes = (xsize >= 0 ? bytes : -bytes);
   
     /* so we don't rely on sign extension in ">>" */
     ASSERT_ALWAYS (sizeof (bytes) >= 4);
   
     bp[-4] = bytes >> 24;
     bp[-3] = bytes >> 16;
     bp[-2] = bytes >> 8;
     bp[-1] = bytes;
     bp -= 4;
   
     if (fp == 0)
       fp = stdout;
     if (fwrite (bp, ssize, 1, fp) != 1)
       ssize = 0;
   
     (*__gmp_free_func) (tp, tsize);
     return ssize;
 }  }
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