sim/rx/misc.c

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

Copyright (C) 2005-2021 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/>.  */

/* This must come before any other includes.  */
#include "defs.h"

#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;
}