gcc/gmp/cxx/osmpf.cc

/* operator<< -- mpf formatted output to an ostream.

Copyright 2001, 2002 Free Software Foundation, Inc.

This file is part of the GNU MP Library.

The GNU MP Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3 of the License, or (at your
option) any later version.

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
or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
License for more details.

You should have received a copy of the GNU Lesser General Public License
along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.  */

#include <clocale>
#include <iostream>
#include <stdarg.h>    /* for va_list and hence doprnt_funs_t */
#include <string.h>

#include "gmp.h"
#include "gmp-impl.h"

using namespace std;


/* The gmp_asprintf support routines never give an error, so
   __gmp_doprnt_mpf shouldn't fail and it's return can just be checked with
   an ASSERT.  */

ostream&
operator<< (ostream &o, mpf_srcptr f)
{
  struct doprnt_params_t  param;
  struct gmp_asprintf_t   d;
  char  *result;
  int   ret;

  __gmp_doprnt_params_from_ios (&param, o);

#if HAVE_STD__LOCALE
  char  point[2];
  point[0] = use_facet< numpunct<char> >(o.getloc()).decimal_point();
  point[1] = '\0';
#else
  const char *point = localeconv()->decimal_point;
#endif

  GMP_ASPRINTF_T_INIT (d, &result);
  ret = __gmp_doprnt_mpf (&__gmp_asprintf_funs_noformat, &d, &param, point, f);
  ASSERT (ret != -1);
  __gmp_asprintf_final (&d);

  gmp_allocated_string  t (result);
  return o.write (t.str, t.len);
}