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/* misc.c --- miscellaneous utility functions for RX simulator.

Copyright (C) 2005, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.

Contributed by Red Hat, Inc.

This file is part of the GNU simulators.

This program is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 3 of the License, or

(at your option) any later version.

This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include <stdio.h>

#include "cpu.h"

#include "misc.h"

int

bcd2int (int bcd, int w)

{

  int v = 0, m = 1, i;

  for (i = 0; i < (w ? 4 : 2); i++)

    {

      v += (bcd % 16) * m;

      m *= 10;

      bcd /= 16;

    }

  return v;

}

int

int2bcd (int v, int w)

{

  int bcd = 0, m = 1, i;

  for (i = 0; i < (w ? 4 : 2); i++)

    {

      bcd += (v % 10) * m;

      m *= 16;

      v /= 10;

    }

  return bcd;

}

char *

comma (unsigned int u)

{

  static char buf[5][20];

  static int bi = 0;

  int comma = 0;

  char *bp;

  bi = (bi + 1) % 5;

  bp = buf[bi] + 19;

  *--bp = 0;

  do

    {

      if (comma == 3)

        {

          *--bp = ',';

          comma = 0;

        }

      comma++;

      *--bp = '0' + (u % 10);

      u /= 10;

    }

  while (u);

  return bp;

}