source: branches/with_autoconf/src/bit2string.cc @ 20

/*------------------------------------------------------------\
|                                                             |
| Tool    :                  systemcass                       |
|                                                             |
| File    :                 bit2string.cc                     |
|                                                             |
| Author  :                 Kingbo Paul-Jerome                |
|                           Buchmann Richard                  |
|                                                             |
| Date    :                   09_07_2004                      |
|                                                             |
\------------------------------------------------------------*/

/* 
 * This file is part of the Disydent Project
 * Copyright (C) Laboratoire LIP6 - Département ASIM
 * Universite Pierre et Marie Curie
 * 
 * Home page          : http://www-asim.lip6.fr/disydent
 * E-mail             : mailto:richard.buchmann@lip6.fr
 * 
 * This library is free software; you  can redistribute it and/or modify it
 * under the terms  of the GNU Library General Public  License as published
 * by the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 * 
 * Disydent 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 General
 * Public License for more details.
 * 
 * You should have received a copy  of the GNU General Public License along
 * with the GNU C Library; see the  file COPYING. If not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "bit2string.h"
#include "sc_unit.h"
#include <cstdarg>
#include <cstdio>
#include <cstdlib>
#include <iostream>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
        
using namespace std;

namespace sc_core {

static
void bit2string_64 (char *buf, tab_t *val,int size)
{
        typedef sc_dt::s_uint_type<64>::uint_type data_type;
  data_type tmp=*((data_type*)val);
        //cout << "tmp = " << tmp << "\n";      
        buf[size]='\0';
        for (int i=size-1; i>=0;--i) 
        {
                buf[i]=(tmp&1)?'1':'0';
                tmp>>=1;
        }
#if 0
  cout << buf << "\n";  
#endif
}

static
void bit2string_32 (char *buf, tab_t *val,int size)
{
        typedef sc_dt::s_uint_type<32>::uint_type data_type;
  data_type tmp=*((data_type*)val);
        //cout << "tmp = " << tmp << "\n";      
        buf[size]='\0';
        for (int i=size-1; i>=0;--i) 
        {
                buf[i]=(tmp&1)?'1':'0';
                tmp>>=1;
        }
#if 0
  cout << buf << "\n";  
#endif
}

void bit2string(char *buf, tab_t *val,int bit_number)
{
  if (bit_number > 32)
  {
    bit2string_64 (buf, (tab_t*)val, bit_number);
    return;
  } else if (bit_number > 16) 
  {
    bit2string_32 (buf, (tab_t*)val, bit_number);
    return;
  }
        tab_t tmp=*((tab_t*)val);
        //cout << "tmp = " << tmp << "\n";      
        buf[bit_number]='\0';
        for (int i=bit_number-1; i>=0;--i) 
        {
                buf[i]=(tmp&1)?'1':'0';
                tmp>>=1;
        }
        
}

char * strip (char * buf)
{
        int cpt=0;
        while ( (buf[cpt] == '0') && (buf[cpt+1] != '\0') ) //tant que bit == 0
                cpt++;
        return (buf+cpt);
}

} // end of sc_core namespace