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1 | \ @(#) misc2.fth 98/01/26 1.2\r |
2 | \ Utilities for PForth extracted from HMSL\r |
3 | \\r |
4 | \ Author: Phil Burk\r |
5 | \ Copyright 1994 3DO, Phil Burk, Larry Polansky, Devid Rosenboom\r |
6 | \\r |
7 | \ The pForth software code is dedicated to the public domain,\r |
8 | \ and any third party may reproduce, distribute and modify\r |
9 | \ the pForth software code or any derivative works thereof\r |
10 | \ without any compensation or license. The pForth software\r |
11 | \ code is provided on an "as is" basis without any warranty\r |
12 | \ of any kind, including, without limitation, the implied\r |
13 | \ warranties of merchantability and fitness for a particular\r |
14 | \ purpose and their equivalents under the laws of any jurisdiction.\r |
15 | \\r |
16 | \ 00001 9/14/92 Added call, 'c w->s\r |
17 | \ 00002 11/23/92 Moved redef of : to loadcom.fth\r |
18 | \r |
19 | anew task-misc2.fth\r |
20 | \r |
21 | : 'N ( <name> -- , make 'n state smart )\r |
22 | bl word find\r |
23 | IF\r |
24 | state @\r |
25 | IF namebase - ( make nfa relocatable )\r |
26 | [compile] literal ( store nfa of word to be compiled )\r |
27 | compile namebase+\r |
28 | THEN\r |
29 | THEN\r |
30 | ; IMMEDIATE\r |
31 | \r |
32 | : ?LITERAL ( n -- , do literal if compiling )\r |
33 | state @\r |
34 | IF [compile] literal\r |
35 | THEN\r |
36 | ;\r |
37 | \r |
38 | : 'c ( <name> -- xt , state sensitive ' )\r |
39 | ' ?literal\r |
40 | ; immediate\r |
41 | \r |
42 | variable if-debug\r |
43 | \r |
44 | decimal\r |
45 | create msec-delay 10000 , ( default for SUN )\r |
46 | : (MSEC) ( #msecs -- )\r |
47 | 0\r |
48 | do msec-delay @ 0\r |
49 | do loop\r |
50 | loop\r |
51 | ;\r |
52 | \r |
53 | defer msec\r |
54 | ' (msec) is msec\r |
55 | \r |
56 | : SHIFT ( val n -- val<<n )\r |
57 | dup 0<\r |
58 | IF negate arshift\r |
59 | ELSE lshift\r |
60 | THEN\r |
61 | ;\r |
62 | \r |
63 | \r |
64 | variable rand-seed here rand-seed !\r |
65 | : random ( -- random_number )\r |
66 | rand-seed @\r |
67 | 31421 * 6927 + \r |
68 | 65535 and dup rand-seed !\r |
69 | ;\r |
70 | : choose ( range -- random_number , in range )\r |
71 | random * -16 shift\r |
72 | ;\r |
73 | \r |
74 | : wchoose ( hi lo -- random_number )\r |
75 | tuck - choose +\r |
76 | ;\r |
77 | \r |
78 | \r |
79 | \ sort top two items on stack.\r |
80 | : 2sort ( a b -- a<b | b<a , largest on top of stack)\r |
81 | 2dup >\r |
82 | if swap\r |
83 | then\r |
84 | ;\r |
85 | \r |
86 | \ sort top two items on stack.\r |
87 | : -2sort ( a b -- a>b | b>a , smallest on top of stack)\r |
88 | 2dup <\r |
89 | if swap\r |
90 | then\r |
91 | ;\r |
92 | \r |
93 | : barray ( #bytes -- ) ( index -- addr )\r |
94 | create allot\r |
95 | does> +\r |
96 | ;\r |
97 | \r |
98 | : warray ( #words -- ) ( index -- addr )\r |
99 | create 2* allot\r |
100 | does> swap 2* +\r |
101 | ;\r |
102 | \r |
103 | : array ( #cells -- ) ( index -- addr )\r |
104 | create cell* allot\r |
105 | does> swap cell* +\r |
106 | ;\r |
107 | \r |
108 | : .bin ( n -- , print in binary )\r |
109 | base @ binary swap . base !\r |
110 | ;\r |
111 | : .dec ( n -- )\r |
112 | base @ decimal swap . base !\r |
113 | ;\r |
114 | : .hex ( n -- )\r |
115 | base @ hex swap . base !\r |
116 | ;\r |
117 | \r |
118 | : B->S ( c -- c' , sign extend byte )\r |
119 | dup $ 80 and \r |
120 | IF\r |
121 | $ FFFFFF00 or\r |
122 | ELSE\r |
123 | $ 000000FF and\r |
124 | THEN\r |
125 | ;\r |
126 | : W->S ( 16bit-signed -- 32bit-signed )\r |
127 | dup $ 8000 and\r |
128 | if\r |
129 | $ FFFF0000 or\r |
130 | ELSE\r |
131 | $ 0000FFFF and\r |
132 | then\r |
133 | ;\r |
134 | \r |
135 | : WITHIN { n1 n2 n3 -- flag }\r |
136 | n2 n3 <=\r |
137 | IF\r |
138 | n2 n1 <=\r |
139 | n1 n3 < AND\r |
140 | ELSE\r |
141 | n2 n1 <=\r |
142 | n1 n3 < OR\r |
143 | THEN\r |
144 | ;\r |
145 | \r |
146 | : MOVE ( src dst num -- )\r |
147 | >r 2dup - 0<\r |
148 | IF\r |
149 | r> CMOVE>\r |
150 | ELSE\r |
151 | r> CMOVE\r |
152 | THEN\r |
153 | ;\r |
154 | \r |
155 | : ERASE ( caddr num -- )\r |
156 | dup 0>\r |
157 | IF\r |
158 | 0 fill\r |
159 | ELSE\r |
160 | 2drop\r |
161 | THEN\r |
162 | ;\r |
163 | \r |
164 | : BLANK ( addr u -- , set memory to blank )\r |
165 | DUP 0>\r |
166 | IF\r |
167 | BL FILL \r |
168 | ELSE \r |
169 | 2DROP \r |
170 | THEN \r |
171 | ;\r |
172 | \r |
173 | \ Obsolete but included for CORE EXT word set.\r |
174 | : QUERY REFILL DROP ;\r |
175 | VARIABLE SPAN\r |
176 | : EXPECT accept span ! ;\r |
177 | : TIB source drop ;\r |
178 | \r |
179 | \r |
180 | : UNUSED ( -- unused , dictionary space )\r |
181 | CODELIMIT HERE -\r |
182 | ;\r |
183 | \r |
184 | : MAP ( -- , dump interesting dictionary info )\r |
185 | ." Code Segment" cr\r |
186 | ." CODEBASE = " codebase .hex cr\r |
187 | ." HERE = " here .hex cr\r |
188 | ." CODELIMIT = " codelimit .hex cr\r |
189 | ." Compiled Code Size = " here codebase - . cr\r |
190 | ." CODE-SIZE = " code-size @ . cr\r |
191 | ." Code Room UNUSED = " UNUSED . cr\r |
192 | ." Name Segment" cr\r |
193 | ." NAMEBASE = " namebase .hex cr\r |
194 | ." HEADERS-PTR @ = " headers-ptr @ .hex cr\r |
195 | ." NAMELIMIT = " namelimit .hex cr\r |
196 | ." CONTEXT @ = " context @ .hex cr\r |
197 | ." LATEST = " latest .hex ." = " latest id. cr\r |
198 | ." Compiled Name size = " headers-ptr @ namebase - . cr\r |
199 | ." HEADERS-SIZE = " headers-size @ . cr\r |
200 | ." Name Room Left = " namelimit headers-ptr @ - . cr\r |
201 | ;\r |
202 | \r |
203 | \r |
204 | \ Search for substring S2 in S1\r |
205 | : SEARCH { addr1 cnt1 addr2 cnt2 | addr3 cnt3 flag -- addr3 cnt3 flag }\r |
206 | \ ." Search for " addr2 cnt2 type ." in " addr1 cnt1 type cr\r |
207 | \ if true, s1 contains s2 at addr3 with cnt3 chars remaining\r |
208 | \ if false, s3 = s1 \r |
209 | addr1 -> addr3\r |
210 | cnt1 -> cnt3\r |
211 | cnt1 cnt2 < not\r |
212 | IF\r |
213 | cnt1 cnt2 - 1+ 0\r |
214 | DO\r |
215 | true -> flag\r |
216 | cnt2 0\r |
217 | ?DO\r |
218 | addr2 i chars + c@\r |
219 | addr1 i j + chars + c@ <> \ mismatch?\r |
220 | IF\r |
221 | false -> flag\r |
222 | LEAVE\r |
223 | THEN\r |
224 | LOOP\r |
225 | flag\r |
226 | IF\r |
227 | addr1 i chars + -> addr3\r |
228 | cnt1 i - -> cnt3\r |
229 | LEAVE\r |
230 | THEN\r |
231 | LOOP\r |
232 | THEN\r |
233 | addr3 cnt3 flag\r |
234 | ;\r |
235 | \r |