File:  [gforth] / gforth / stuff.fs
Revision 1.13: download - view: text, annotated - select for diffs
Fri Dec 3 18:24:23 1999 UTC (22 years ago) by crook
Branches: MAIN
CVS tags: HEAD
Fixed (my earlier) errors in the documentation of Standard search words
in search.fs. Minor documentation tweaks in the other files.

    1: \ miscelleneous words
    2: 
    3: \ Copyright (C) 1996,1997,1998 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., 675 Mass Ave, Cambridge, MA 02139, 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 ( 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< ;

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>