home *** CD-ROM | disk | FTP | other *** search
- /*
- C BASED FORTH-83 MULTI-TASKING KERNEL: FLOATING POINT NUMBERS
-
- Copyright (C) 1990 by Mikael R.K. Patel
-
- Computer Aided Design Laboratory (CADLAB)
- Department of Computer and Information Science
- Linkoping University
- S-581 83 LINKOPING
- SWEDEN
-
- Email: mip@ida.liu.se
-
- Started on: 12 April 1990
-
- Last updated on: 26 June 1990
-
- Dependencies:
- (cc) kernel.c, kernel.h
-
- Description:
- Floating point number extension vocabulary for the tile forth
- multi-tasking kernel.
-
- Copying:
- 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 1, 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; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
- */
-
-
- VOID doitof()
- {
- coerce(INT32, FLOAT32);
- }
-
- NORMAL_CODE(itof, forth, "i>f", doitof);
-
- VOID doftoi()
- {
- coerce(FLOAT32, INT32);
- }
-
- NORMAL_CODE(ftoi, itof, "f>i", doftoi);
-
- VOID dofplus()
- {
- binary(+, FLOAT32);
- }
-
- NORMAL_CODE(fplus, ftoi, "f+", dofplus);
-
- VOID dofminus()
- {
- binary(-, FLOAT32);
- }
-
- NORMAL_CODE(fminus, fplus, "f-", dofminus);
-
- VOID doftimes()
- {
- binary(*, FLOAT32);
- }
-
- NORMAL_CODE(ftimes, fminus, "f*", doftimes);
-
- VOID dofdivide()
- {
- binary(/, FLOAT32);
- }
-
- NORMAL_CODE(fdivide, ftimes, "f/", dofdivide);
-
- VOID dofonedivide()
- {
- unary(1.0 /, FLOAT32);
- }
-
- NORMAL_CODE(fonedivide, fdivide, "1/f", dofonedivide);
-
- VOID dofnegate()
- {
- unary(-, FLOAT32);
- }
-
- NORMAL_CODE(fnegate, fonedivide, "fnegate", dofnegate);
-
- VOID dofdot()
- {
- FLOAT32 f;
-
- f = spop(FLOAT32);
- (VOID) fprintf(io_outf, "%g ", f);
- }
-
- NORMAL_CODE(fdot, fnegate, "f.", dofdot);
-
- VOID doqfloat()
- {
- FLOAT32 f;
- CHAR c;
-
- doqnumber();
- if (tos.BOOL) return; else sdrop();
-
- if (sscanf(tos.CSTR, "%f%1c", &f, &c) == 1) {
- tos.FLOAT32 = f;
- spush(TRUE, BOOL);
- }
- else {
- spush(FALSE, BOOL);
- }
- }
-
- NORMAL_CODE(qfloat, fdot, "?float", doqfloat);
-
-