1 /* mpz_out_raw -- Output a mpz_t in binary. Use an endianess and word size
4 Copyright (C) 1995 Free Software Foundation, Inc.
6 This file is part of the GNU MP Library.
8 The GNU MP Library is free software; you can redistribute it and/or modify
9 it under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or (at your
11 option) any later version.
13 The GNU MP Library is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
16 License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with the GNU MP Library; see the file COPYING.LIB. If not, write to
20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
21 MA 02111-1307, USA. */
30 mpz_out_raw (FILE *stream, mpz_srcptr x)
32 mpz_out_raw (stream, x)
39 mp_size_t xsize = ABS (x->_mp_size);
40 mp_srcptr xp = x->_mp_d;
41 mp_size_t out_bytesize;
43 int n_bytes_in_hi_limb;
50 for (i = 4 - 1; i >= 0; i--)
52 return ferror (stream) ? 0 : 4;
55 hi_limb = xp[xsize - 1];
56 for (i = BYTES_PER_MP_LIMB - 1; i > 0; i--)
58 if ((hi_limb >> i * BITS_PER_CHAR) != 0)
61 n_bytes_in_hi_limb = i + 1;
62 out_bytesize = BYTES_PER_MP_LIMB * (xsize - 1) + n_bytes_in_hi_limb;
64 out_bytesize = -out_bytesize;
66 /* Make the size 4 bytes on all machines, to make the format portable. */
67 for (i = 4 - 1; i >= 0; i--)
68 fputc ((out_bytesize >> (i * BITS_PER_CHAR)) % (1 << BITS_PER_CHAR),
71 /* Output from the most significant limb to the least significant limb,
72 with each limb also output in decreasing significance order. */
74 /* Output the most significant limb separately, since we will only
75 output some of its bytes. */
76 for (i = n_bytes_in_hi_limb - 1; i >= 0; i--)
77 fputc ((hi_limb >> (i * BITS_PER_CHAR)) % (1 << BITS_PER_CHAR), stream);
79 /* Output the remaining limbs. */
80 for (s = xsize - 2; s >= 0; s--)
85 for (i = BYTES_PER_MP_LIMB - 1; i >= 0; i--)
86 fputc ((x_limb >> (i * BITS_PER_CHAR)) % (1 << BITS_PER_CHAR), stream);
88 return ferror (stream) ? 0 : ABS (out_bytesize) + 4;