Annotation of OpenXM/src/kan96xx/gmp-2.0.2/mpz/out_str.c, Revision 1.1.1.1
1.1 maekawa 1: /* mpz_out_str(stream, base, integer) -- Output to STREAM the multi prec.
2: integer INTEGER in base BASE.
3:
4: Copyright (C) 1991, 1993, 1994, 1996 Free Software Foundation, Inc.
5:
6: This file is part of the GNU MP Library.
7:
8: The GNU MP Library is free software; you can redistribute it and/or modify
9: it under the terms of the GNU Library General Public License as published by
10: the Free Software Foundation; either version 2 of the License, or (at your
11: option) any later version.
12:
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 Library General Public
16: License for more details.
17:
18: You should have received a copy of the GNU Library 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. */
22:
23: #include <stdio.h>
24: #include "gmp.h"
25: #include "gmp-impl.h"
26:
27: size_t
28: #if __STDC__
29: mpz_out_str (FILE *stream, int base, mpz_srcptr x)
30: #else
31: mpz_out_str (stream, base, x)
32: FILE *stream;
33: int base;
34: mpz_srcptr x;
35: #endif
36: {
37: mp_ptr xp;
38: mp_size_t x_size = x->_mp_size;
39: unsigned char *str;
40: size_t str_size;
41: size_t i;
42: size_t written;
43: char *num_to_text;
44: TMP_DECL (marker);
45:
46: if (stream == 0)
47: stream = stdout;
48:
49: if (base >= 0)
50: {
51: if (base == 0)
52: base = 10;
53: num_to_text = "0123456789abcdefghijklmnopqrstuvwxyz";
54: }
55: else
56: {
57: base = -base;
58: num_to_text = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
59: }
60:
61: if (x_size == 0)
62: {
63: fputc ('0', stream);
64: return ferror (stream) ? 0 : 1;
65: }
66:
67: written = 0;
68:
69: if (x_size < 0)
70: {
71: fputc ('-', stream);
72: x_size = -x_size;
73: written = 1;
74: }
75:
76: TMP_MARK (marker);
77: str_size = ((size_t) (x_size * BITS_PER_MP_LIMB
78: * __mp_bases[base].chars_per_bit_exactly)) + 3;
79: str = (unsigned char *) TMP_ALLOC (str_size);
80:
81: /* Move the number to convert into temporary space, since mpn_get_str
82: clobbers its argument + needs one extra high limb.... */
83: xp = (mp_ptr) TMP_ALLOC ((x_size + 1) * BYTES_PER_MP_LIMB);
84: MPN_COPY (xp, x->_mp_d, x_size);
85:
86: str_size = mpn_get_str (str, base, xp, x_size);
87:
88: /* mpn_get_str might make some leading zeros. Skip them. */
89: while (*str == 0)
90: {
91: str_size--;
92: str++;
93: }
94:
95: /* Translate to printable chars. */
96: for (i = 0; i < str_size; i++)
97: str[i] = num_to_text[str[i]];
98: str[str_size] = 0;
99:
100: {
101: size_t fwret;
102: fwret = fwrite ((char *) str, 1, str_size, stream);
103: written += fwret;
104: }
105:
106: TMP_FREE (marker);
107: return ferror (stream) ? 0 : written;
108: }
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>