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| 1 : | anton | 1.2 | \ environmental queries |
| 2 : | anton | 1.1 | |
| 3 : | anton | 1.8 | \ Copyright (C) 1995 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 : | pazsan | 1.3 | \ wordlist constant environment-wordlist |
| 22 : | anton | 1.1 | |
| 23 : | pazsan | 1.3 | Create environment-wordlist wordlist drop |
| 24 : | |||
| 25 : | anton | 1.10 | : environment? ( c-addr u -- false / ... true ) \ core environment-query |
| 26 : | anton | 1.2 | environment-wordlist search-wordlist if |
| 27 : | execute true | ||
| 28 : | else | ||
| 29 : | false | ||
| 30 : | endif ; | ||
| 31 : | |||
| 32 : | environment-wordlist set-current | ||
| 33 : | get-order environment-wordlist swap 1+ set-order | ||
| 34 : | |||
| 35 : | \ assumes that chars, cells and doubles use an integral number of aus | ||
| 36 : | |||
| 37 : | \ this should be computed in C as CHAR_BITS/sizeof(char), | ||
| 38 : | \ but I don't know any machine with gcc where an au does not have 8 bits. | ||
| 39 : | anton | 1.7 | 8 constant ADDRESS-UNIT-BITS ( -- n ) \ environment |
| 40 : | anton | 1.2 | 1 ADDRESS-UNIT-BITS chars lshift 1- constant MAX-CHAR |
| 41 : | MAX-CHAR constant /COUNTED-STRING | ||
| 42 : | ADDRESS-UNIT-BITS cells 2* 2 + constant /HOLD | ||
| 43 : | &84 constant /PAD | ||
| 44 : | true constant CORE | ||
| 45 : | anton | 1.9 | true constant CORE-EXT |
| 46 : | anton | 1.2 | 1 -3 mod 0< constant FLOORED |
| 47 : | |||
| 48 : | 1 ADDRESS-UNIT-BITS cells 1- lshift 1- constant MAX-N | ||
| 49 : | -1 constant MAX-U | ||
| 50 : | anton | 1.1 | |
| 51 : | anton | 1.2 | -1 MAX-N 2constant MAX-D |
| 52 : | -1. 2constant MAX-UD | ||
| 53 : | pazsan | 1.3 | |
| 54 : | anton | 1.5 | 0 1 2constant gforth \ minor major version |
| 55 : | anton | 1.1 | |
| 56 : | anton | 1.10 | : return-stack-cells ( -- n ) |
| 57 : | [ forthstart 6 cells + ] literal @ cell / ; | ||
| 58 : | |||
| 59 : | : stack-cells ( -- n ) | ||
| 60 : | [ forthstart 4 cells + ] literal @ cell / ; | ||
| 61 : | |||
| 62 : | : floating-stack ( -- n ) | ||
| 63 : | pazsan | 1.11 | [ forthstart 5 cells + ] literal @ |
| 64 : | [IFDEF] float float [ELSE] [ 1 floats ] Literal [THEN] / ; | ||
| 65 : | anton | 1.10 | |
| 66 : | anton | 1.5 | \ !! max-float |
| 67 : | anton | 1.6 | 15 constant #locals \ 1000 64 / |
| 68 : | \ One local can take up to 64 bytes, the size of locals-buffer is 1000 | ||
| 69 : | anton | 1.5 | maxvp constant wordlists |
| 70 : | anton | 1.2 | |
| 71 : | forth definitions | ||
| 72 : | previous | ||
| 73 : | anton | 1.1 |
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