| \ EXTEND.FS CORE-EXT Word not fully tested! 12may93jaw |
\ EXTEND.FS CORE-EXT Word not fully tested! 12may93jaw |
| |
|
| |
\ 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 |
| |
\ 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, write to the Free Software |
| |
\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| |
|
| |
|
| \ May be cross-compiled |
\ May be cross-compiled |
| |
|
| decimal |
decimal |
| : 2Literal ( compilation w1 w2 -- ; run-time -- w1 w2 ) \ double two-literal |
: 2Literal ( compilation w1 w2 -- ; run-time -- w1 w2 ) \ double two-literal |
| swap postpone Literal postpone Literal ; immediate restrict |
swap postpone Literal postpone Literal ; immediate restrict |
| |
|
| |
: dabs ( d1 -- d2 ) \ double |
| |
dup 0< IF dnegate THEN ; |
| |
|
| : m*/ ( d1 n2 u3 -- dqout ) \ double m-star-slash |
: m*/ ( d1 n2 u3 -- dqout ) \ double m-star-slash |
| >r s>d >r abs -rot |
>r s>d >r abs -rot |
| s>d r> xor r> swap >r >r dabs rot tuck um* 2swap um* |
s>d r> xor r> swap >r >r dabs rot tuck um* 2swap um* |
| \ SOURCE-ID SAVE-INPUT RESTORE-INPUT 11jun93jaw |
\ SOURCE-ID SAVE-INPUT RESTORE-INPUT 11jun93jaw |
| |
|
| : source-id ( -- 0 | -1 | fileid ) \ core-ext source-i-d |
: source-id ( -- 0 | -1 | fileid ) \ core-ext source-i-d |
| loadfile @ dup 0= IF drop loadline @ 0 min THEN ; |
loadfile @ dup 0= IF drop sourceline# 0 min THEN ; |
| |
|
| : save-input ( -- x1 .. xn n ) \ core-ext |
: save-input ( -- x1 .. xn n ) \ core-ext |
| >in @ |
>in @ |
| loadfile @ ?dup |
loadfile @ |
| IF dup file-position throw loadline @ >tib @ 6 |
if |
| #tib @ >tib +! |
loadfile @ file-position throw |
| ELSE loadline @ blk @ linestart @ >tib @ 5 THEN |
else |
| ; |
blk @ |
| |
linestart @ |
| |
then |
| |
sourceline# |
| |
>tib @ |
| |
source-id |
| |
6 ; |
| |
|
| : restore-input ( x1 .. xn n -- flag ) \ core-ext |
: restore-input ( x1 .. xn n -- flag ) \ core-ext |
| swap >tib ! |
6 <> -12 and throw |
| 6 = IF loadline ! rot dup loadfile ! |
source-id <> -12 and throw |
| reposition-file IF drop true EXIT THEN |
>tib ! |
| ELSE linestart ! blk ! |
>r ( line# ) |
| dup loadline @ <> IF 2drop true EXIT THEN |
loadfile @ 0<> |
| loadline ! |
if |
| THEN |
loadfile @ reposition-file throw |
| >in ! false ; |
else |
| |
linestart ! |
| |
blk ! |
| |
sourceline# r@ <> blk @ 0= and loadfile @ 0= and |
| |
if |
| |
drop rdrop true EXIT |
| |
then |
| |
then |
| |
r> loadline ! |
| |
>in ! |
| |
false ; |
| |
|
| |
\ : save-input ( -- x1 .. xn n ) \ core-ext |
| |
\ >in @ |
| |
\ loadfile @ ?dup |
| |
\ IF dup file-position throw sourceline# >tib @ 6 |
| |
\ #tib @ >tib +! |
| |
\ ELSE sourceline# blk @ linestart @ >tib @ 5 THEN |
| |
\ ; |
| |
|
| |
\ : restore-input ( x1 .. xn n -- flag ) \ core-ext |
| |
\ swap >tib ! |
| |
\ 6 = IF loadline ! rot dup loadfile ! |
| |
\ reposition-file IF drop true EXIT THEN |
| |
\ ELSE linestart ! blk ! |
| |
\ dup sourceline# <> IF 2drop true EXIT THEN |
| |
\ loadline ! |
| |
\ THEN |
| |
\ >in ! false ; |
| |
|
| |
|
| |
|
