File:  [gforth] / gforth / Attic / 32bit.h
Revision 1.3: download - view: text, annotated - select for diffs
Tue Nov 7 18:06:28 1995 UTC (27 years, 2 months ago) by anton
Branches: MAIN
CVS tags: gforth-0_1beta, HEAD
added copyright headers
changes to loadfilename & co. to make savesystem transparent to
 assertions and ~~

  This is a generic file for 32-bit machines with IEEE FP arithmetic (no VMS).
  It only supports indirect threading.

  Copyright (C) 1995 Free Software Foundation, Inc.

  This file is part of Gforth.

  Gforth 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 2
  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
  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, write to the Free Software
  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

/* Cell and UCell must be the same size as a pointer */
typedef long Cell;
typedef unsigned long UCell;

/* DCell and UDCell must be twice as large as Cell */
typedef long long DCell;
typedef unsigned long long UDCell;

/* define this if IEEE singles and doubles are available as C data types */
#define IEEE_FP

/* the IEEE types are used only for loading and storing */
/* the IEEE double precision type */
typedef double DFloat;
/* the IEEE single precision type */
typedef float SFloat;

#ifndef USE_FTOS
#ifndef USE_NO_FTOS
/* keep top of FP stack in register. Since most processors have FP
   registers and they are hardly used in gforth, this is usually a
   good idea.  The 88100 has no separate FP regs, but many general
   purpose regs, so it should be ok */
#define USE_FTOS
/* I don't do the same for the data stack (i.e. USE_TOS), since this
   loses on processors with few registers. USE_TOS might be defined in
   the processor-specific files */

/* If you want direct threading, write a .h file for your processor! */
/* We could put some stuff here that causes a compile error, but then
   we could not use this file in the other machine.h files */

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