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| 1 : | anton | 1.1 | \ miscelleneous words |
| 2 : | |||
| 3 : | anton | 1.7 | \ Copyright (C) 1996,1997,1998 Free Software Foundation, Inc. |
| 4 : | anton | 1.1 | |
| 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 : | anton | 1.8 | |
| 22 : | anton | 1.6 | ' require alias needs ( ... "name" -- ... ) \ gforth |
| 23 : | crook | 1.11 | \G An alias for @code{require}; exists on other systems (e.g., Win32Forth). |
| 24 : | anton | 1.1 | \ 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 : | anton | 1.2 | |
| 37 : | anton | 1.4 | \ DMIN and DMAX |
| 38 : | |||
| 39 : | anton | 1.2 | : dmin ( d1 d2 -- d ) \ double |
| 40 : | pazsan | 1.5 | 2over 2over d> IF 2swap THEN 2drop ; |
| 41 : | anton | 1.2 | |
| 42 : | : dmax ( d1 d2 -- d ) \ double | ||
| 43 : | pazsan | 1.5 | 2over 2over d< IF 2swap THEN 2drop ; |
| 44 : | anton | 1.4 | |
| 45 : | \ shell commands | ||
| 46 : | |||
| 47 : | crook | 1.10 | 0 Value $? ( -- n ) \ gforth dollar-question |
| 48 : | crook | 1.12 | \G @code{Value} -- the exit status returned by the most recently executed |
| 49 : | crook | 1.9 | \G @code{system} command. |
| 50 : | anton | 1.4 | |
| 51 : | : system ( addr u -- ) \ gforth | ||
| 52 : | crook | 1.11 | \G Pass the string specified by @var{c-addr, u} to the host operating system |
| 53 : | crook | 1.9 | \G for execution in a sub-shell. |
| 54 : | anton | 1.4 | (system) throw TO $? ; |
| 55 : | crook | 1.9 | |
| 56 : | anton | 1.4 | : sh ( "..." -- ) \ gforth |
| 57 : | crook | 1.9 | \G Parse a string and use @code{system} to pass it to the host |
| 58 : | \G operating system for execution in a sub-shell. | ||
| 59 : | anton | 1.4 | '# parse cr system ; |
| 60 : | |||
| 61 : | anton | 1.8 | \ stuff |
| 62 : | |||
| 63 : | crook | 1.10 | : ]L ( compilation: n -- ; run-time: -- n ) \ gforth |
| 64 : | \G equivalent to @code{] literal} | ||
| 65 : | anton | 1.8 | ] postpone literal ; |
| 66 : | |||
| 67 : | : in-dictionary? ( x -- f ) | ||
| 68 : | forthstart dictionary-end within ; | ||
| 69 : | |||
| 70 : | : in-return-stack? ( addr -- f ) | ||
| 71 : | rp0 @ swap - [ forthstart 6 cells + ]L @ u< ; |
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