text: /* Support for operator<< routines.
  
     THE FUNCTIONS IN THIS FILE ARE FOR INTERNAL USE ONLY.  THEY'RE ALMOST
     CERTAIN TO BE SUBJECT TO INCOMPATIBLE CHANGES OR DISAPPEAR COMPLETELY IN
     FUTURE GNU MP RELEASES.
  
  Copyright 2001 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 <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;
  
  
  /* Don't need "format" for operator<< routines, just "memory" and "reps".
     Omitting gmp_asprintf_format lets us avoid dragging vsnprintf into the
     link.  __gmp_asprintf_final will be called directly and doesn't need to
     be in the struct.  */
  
  const struct doprnt_funs_t  __gmp_asprintf_funs_noformat = {
    NULL,
    (doprnt_memory_t) __gmp_asprintf_memory,
    (doprnt_reps_t)   __gmp_asprintf_reps,
    NULL
  };
  
  
  void
  __gmp_doprnt_params_from_ios (struct doprnt_params_t *p, ios &o)
  {
    if ((o.flags() & ios::basefield) == ios::hex)
      {
        p->expfmt = "@%c%02d";
        p->base = (o.flags() & ios::uppercase ? -16 : 16);
      }
    else
      {
        p->expfmt = (o.flags() & ios::uppercase ? "E%c%02d" : "e%c%02d");
        if ((o.flags() & ios::basefield) == ios::oct)
          p->base = 8;
        else
          p->base = 10;
      }
  
    /* "general" if none or more than one bit set */
    if ((o.flags() & ios::floatfield) == ios::fixed)
      p->conv = DOPRNT_CONV_FIXED;
    else if ((o.flags() & ios::floatfield) == ios::scientific)
      p->conv = DOPRNT_CONV_SCIENTIFIC;
    else
      p->conv = DOPRNT_CONV_GENERAL;
  
    p->exptimes4 = 0;
  
    p->fill = o.fill();
  
    /* "right" if more than one bit set */
    if ((o.flags() & ios::adjustfield) == ios::left)
      p->justify = DOPRNT_JUSTIFY_LEFT;
    else if ((o.flags() & ios::adjustfield) == ios::internal)
      p->justify = DOPRNT_JUSTIFY_INTERNAL;
    else
      p->justify = DOPRNT_JUSTIFY_RIGHT;
  
    /* ios::fixed allows prec==0, others take 0 as the default 6.
       Don't allow negatives (they do bad things to __gmp_doprnt_float_cxx).  */
    p->prec = MAX (0, o.precision());
    if (p->prec == 0 && p->conv != DOPRNT_CONV_FIXED)
      p->prec = 6;
  
    /* for hex showbase is always, for octal only non-zero */
    if (o.flags() & ios::showbase)
      p->showbase = ((o.flags() & ios::basefield) == ios::hex
                     ? DOPRNT_SHOWBASE_YES : DOPRNT_SHOWBASE_NONZERO);
    else
      p->showbase = DOPRNT_SHOWBASE_NO;
  
    p->showpoint = ((o.flags() & ios::showpoint) != 0);
  
    /* in fixed and scientific always show trailing zeros, in general format
       show them if showpoint is set (or so it seems) */
    if ((o.flags() & ios::floatfield) == ios::fixed
        || (o.flags() & ios::floatfield) == ios::scientific)
      p->showtrailing = 1;
    else
      p->showtrailing = p->showpoint;
  
    p->sign = (o.flags() & ios::showpos ? '+' : '\0');
  
    p->width = o.width();
  
    /* reset on each output */
    o.width (0);
  }
  