Annotation of gforth/stuff.fs, revision 1.16

1.1       anton       1: \ miscelleneous words
                      2: 
1.15      anton       3: \ Copyright (C) 1996,1997,1998,2000 Free Software Foundation, Inc.
1.1       anton       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
1.16    ! anton      19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.1       anton      20: 
1.8       anton      21: 
1.6       anton      22: ' require alias needs ( ... "name" -- ... ) \ gforth
1.11      crook      23: \G An alias for @code{require}; exists on other systems (e.g., Win32Forth).
1.1       anton      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 ;
1.2       anton      36: 
1.4       anton      37: \ DMIN and DMAX
                     38: 
1.13      crook      39: : dmin ( d1 d2 -- d ) \ double d-min
1.5       pazsan     40:     2over 2over d> IF  2swap  THEN 2drop ;
1.2       anton      41: 
1.13      crook      42: 
                     43: : dmax ( d1 d2 -- d ) \ double d-max
1.5       pazsan     44:     2over 2over d< IF  2swap  THEN 2drop ;
1.4       anton      45: 
                     46: \ shell commands
                     47: 
1.10      crook      48: 0 Value $? ( -- n ) \ gforth dollar-question
1.12      crook      49: \G @code{Value} -- the exit status returned by the most recently executed
1.9       crook      50: \G @code{system} command.
1.4       anton      51: 
1.14      anton      52: : system ( c-addr u -- ) \ gforth
                     53: \G Pass the string specified by @var{c-addr u} to the host operating system
1.9       crook      54: \G for execution in a sub-shell.
1.4       anton      55:     (system) throw TO $? ;
1.9       crook      56: 
1.4       anton      57: : sh ( "..." -- ) \ gforth
1.9       crook      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.
1.4       anton      60:     '# parse cr system ;
                     61: 
1.8       anton      62: \ stuff
                     63: 
1.10      crook      64: : ]L ( compilation: n -- ; run-time: -- n ) \ gforth
                     65:     \G equivalent to @code{] literal}
1.8       anton      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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