Annotation of gforth/32bit.h, revision 1.4
1.1 anton 1: /*
2: This is a generic file for 32-bit machines with IEEE FP arithmetic (no VMS).
3: It only supports indirect threading.
1.3 anton 4:
5: Copyright (C) 1995 Free Software Foundation, Inc.
7: This file is part of Gforth.
9: Gforth is free software; you can redistribute it and/or
10: modify it under the terms of the GNU General Public License
11: as published by the Free Software Foundation; either version 2
12: of the License, or (at your option) any later version.
14: This program is distributed in the hope that it will be useful,
15: but WITHOUT ANY WARRANTY; without even the implied warranty of
16: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17: GNU General Public License for more details.
19: You should have received a copy of the GNU General Public License
20: along with this program; if not, write to the Free Software
21: Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
1.1 anton 22: */
24: /* define this if IEEE singles and doubles are available as C data types */
25: #define IEEE_FP
27: /* the IEEE types are used only for loading and storing */
28: /* the IEEE double precision type */
29: typedef double DFloat;
30: /* the IEEE single precision type */
31: typedef float SFloat;
1.2 anton 33: #ifndef USE_FTOS
34: #ifndef USE_NO_FTOS
35: /* keep top of FP stack in register. Since most processors have FP
36: registers and they are hardly used in gforth, this is usually a
37: good idea. The 88100 has no separate FP regs, but many general
38: purpose regs, so it should be ok */
39: #define USE_FTOS
42: /* I don't do the same for the data stack (i.e. USE_TOS), since this
43: loses on processors with few registers. USE_TOS might be defined in
44: the processor-specific files */
1.1 anton 46: #ifdef DIRECT_THREADED
47: /* If you want direct threading, write a .h file for your processor! */
48: /* We could put some stuff here that causes a compile error, but then
49: we could not use this file in the other machine.h files */