116 lines
3.6 KiB
C++
116 lines
3.6 KiB
C++
/* 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 2.1 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; see the file COPYING.LIB. If not, write to
|
|
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
#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);
|
|
}
|