1: \ miscelleneous words
2:
3: \ Copyright (C) 1996,1997,1998,2000 Free Software Foundation, Inc.
4:
5: \ This file is part of Gforth.
6:
7: \ Gforth is free software; you can redistribute it and/or
8: \ modify it under the terms of the GNU General Public License
9: \ as published by the Free Software Foundation; either version 2
10: \ of the License, or (at your option) any later version.
11:
12: \ This program is distributed in the hope that it will be useful,
13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: \ GNU General Public License for more details.
16:
17: \ You should have received a copy of the GNU General Public License
18: \ along with this program; if not, write to the Free Software
19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
20:
21:
22: ' require alias needs ( ... "name" -- ... ) \ gforth
23: \G An alias for @code{require}; exists on other systems (e.g., Win32Forth).
24: \ needs is an F-PC name. we will probably switch to 'needs' in the future
25:
26: \ a little more compiler security
27:
28: \ currently not used by Gforth, but maybe by add-ons e.g., the 486asm
29: AUser CSP
30:
31: : !CSP ( -- )
32: sp@ csp ! ;
33:
34: : ?CSP ( -- )
35: sp@ csp @ <> -22 and throw ;
36:
37: \ DMIN and DMAX
38:
39: : dmin ( d1 d2 -- d ) \ double d-min
40: 2over 2over d> IF 2swap THEN 2drop ;
41:
42:
43: : dmax ( d1 d2 -- d ) \ double d-max
44: 2over 2over d< IF 2swap THEN 2drop ;
45:
46: \ shell commands
47:
48: 0 Value $? ( -- n ) \ gforth dollar-question
49: \G @code{Value} -- the exit status returned by the most recently executed
50: \G @code{system} command.
51:
52: : system ( c-addr u -- ) \ gforth
53: \G Pass the string specified by @var{c-addr u} to the host operating system
54: \G for execution in a sub-shell.
55: (system) throw TO $? ;
56:
57: : sh ( "..." -- ) \ gforth
58: \G Parse a string and use @code{system} to pass it to the host
59: \G operating system for execution in a sub-shell.
60: '# parse cr system ;
61:
62: \ stuff
63:
64: : ]L ( compilation: n -- ; run-time: -- n ) \ gforth
65: \G equivalent to @code{] literal}
66: ] postpone literal ;
67:
68: : in-dictionary? ( x -- f )
69: forthstart dictionary-end within ;
70:
71: : in-return-stack? ( addr -- f )
72: rp0 @ swap - [ forthstart 6 cells + ]L @ u< ;
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