1/* operator<< -- mpf formatted output to an ostream.
2
3Copyright 2001, 2002 Free Software Foundation, Inc.
4
5This file is part of the GNU MP Library.
6
7The GNU MP Library is free software; you can redistribute it and/or modify
8it under the terms of the GNU Lesser General Public License as published by
9the Free Software Foundation; either version 3 of the License, or (at your
10option) any later version.
11
12The GNU MP Library is distributed in the hope that it will be useful, but
13WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
15License for more details.
16
17You should have received a copy of the GNU Lesser General Public License
18along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.  */
19
20#include <clocale>
21#include <iostream>
22#include <stdarg.h>    /* for va_list and hence doprnt_funs_t */
23#include <string.h>
24
25#include "gmp.h"
26#include "gmp-impl.h"
27
28using namespace std;
29
30
31/* The gmp_asprintf support routines never give an error, so
32   __gmp_doprnt_mpf shouldn't fail and it's return can just be checked with
33   an ASSERT.  */
34
35ostream&
36operator<< (ostream &o, mpf_srcptr f)
37{
38  struct doprnt_params_t  param;
39  struct gmp_asprintf_t   d;
40  char  *result;
41  int   ret;
42
43  __gmp_doprnt_params_from_ios (&param, o);
44
45#if HAVE_STD__LOCALE
46  char  point[2];
47  point[0] = use_facet< numpunct<char> >(o.getloc()).decimal_point();
48  point[1] = '\0';
49#else
50  const char *point = localeconv()->decimal_point;
51#endif
52
53  GMP_ASPRINTF_T_INIT (d, &result);
54  ret = __gmp_doprnt_mpf (&__gmp_asprintf_funs_noformat, &d, &param, point, f);
55  ASSERT (ret != -1);
56  __gmp_asprintf_final (&d);
57
58  gmp_allocated_string  t (result);
59  return o.write (t.str, t.len);
60}
61