[gforth] / gforth / prim

gforth: gforth/prim

1 :	anton	1.1	\ Gforth primitives
2 :
3 :	anton	1.204	\ Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005,2006 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 :	anton	1.63	\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
20 :	anton	1.1
21 :
22 :			\ WARNING: This file is processed by m4. Make sure your identifiers
23 :			\ don't collide with m4's (e.g. by undefining them).
24 :			\
25 :			\
26 :			\
27 :			\ This file contains primitive specifications in the following format:
28 :			\
29 :	anton	1.47	\ forth name ( stack effect ) category [pronunciation]
30 :	anton	1.1	\ [""glossary entry""]
31 :			\ C code
32 :			\ [:
33 :			\ Forth code]
34 :			\
35 :	anton	1.47	\ Note: Fields in brackets are optional. Word specifications have to
36 :			\ be separated by at least one empty line
37 :	anton	1.1	\
38 :			\ Both pronounciation and stack items (in the stack effect) must
39 :	anton	1.48	\ conform to the C identifier syntax or the C compiler will complain.
40 :			\ If you don't have a pronounciation field, the Forth name is used,
41 :			\ and has to conform to the C identifier syntax.
42 :	anton	1.1	\
43 :			\ These specifications are automatically translated into C-code for the
44 :			\ interpreter and into some other files. I hope that your C compiler has
45 :			\ decent optimization, otherwise the automatically generated code will
46 :			\ be somewhat slow. The Forth version of the code is included for manual
47 :			\ compilers, so they will need to compile only the important words.
48 :			\
49 :			\ Note that stack pointer adjustment is performed according to stack
50 :			\ effect by automatically generated code and NEXT is automatically
51 :			\ appended to the C code. Also, you can use the names in the stack
52 :			\ effect in the C code. Stack access is automatic. One exception: if
53 :			\ your code does not fall through, the results are not stored into the
54 :			\ stack. Use different names on both sides of the '--', if you change a
55 :			\ value (some stores to the stack are optimized away).
56 :	anton	1.93	\
57 :			\ For superinstructions the syntax is:
58 :			\
59 :			\ forth-name [/ c-name] = forth-name forth-name ...
60 :			\
61 :	anton	1.1	\
62 :			\ The stack variables have the following types:
63 :			\
64 :			\ name matches type
65 :			\ f.* Bool
66 :			\ c.* Char
67 :	anton	1.93	\ [nw].* Cell
68 :	anton	1.1	\ u.* UCell
69 :			\ d.* DCell
70 :			\ ud.* UDCell
71 :			\ r.* Float
72 :			\ a_.* Cell *
73 :			\ c_.* Char *
74 :			\ f_.* Float *
75 :			\ df_.* DFloat *
76 :			\ sf_.* SFloat *
77 :			\ xt.* XT
78 :			\ f83name.* F83Name *
79 :	anton	1.67
80 :	anton	1.79	\E stack data-stack sp Cell
81 :			\E stack fp-stack fp Float
82 :			\E stack return-stack rp Cell
83 :			\E
84 :	anton	1.67	\E get-current prefixes set-current
85 :			\E
86 :			\E s" Bool" single data-stack type-prefix f
87 :			\E s" Char" single data-stack type-prefix c
88 :			\E s" Cell" single data-stack type-prefix n
89 :			\E s" Cell" single data-stack type-prefix w
90 :			\E s" UCell" single data-stack type-prefix u
91 :			\E s" DCell" double data-stack type-prefix d
92 :			\E s" UDCell" double data-stack type-prefix ud
93 :			\E s" Float" single fp-stack type-prefix r
94 :			\E s" Cell *" single data-stack type-prefix a_
95 :			\E s" Char *" single data-stack type-prefix c_
96 :			\E s" Float *" single data-stack type-prefix f_
97 :			\E s" DFloat *" single data-stack type-prefix df_
98 :			\E s" SFloat *" single data-stack type-prefix sf_
99 :			\E s" Xt" single data-stack type-prefix xt
100 :			\E s" struct F83Name *" single data-stack type-prefix f83name
101 :	anton	1.71	\E s" struct Longname *" single data-stack type-prefix longname
102 :	anton	1.67	\E
103 :	anton	1.172	\E data-stack stack-prefix S:
104 :			\E fp-stack stack-prefix F:
105 :	anton	1.67	\E return-stack stack-prefix R:
106 :			\E inst-stream stack-prefix #
107 :			\E
108 :			\E set-current
109 :	anton	1.97	\E store-optimization on
110 :	anton	1.109	\E ' noop tail-nextp2 ! \ now INST_TAIL just stores, but does not jump
111 :	anton	1.128	\E
112 :			\E include-skipped-insts on \ static superinsts include cells for components
113 :			\E \ useful for dynamic programming and
114 :			\E \ superinsts across entry points
115 :	anton	1.67
116 :	anton	1.1	\
117 :			\
118 :			\
119 :			\ In addition the following names can be used:
120 :			\ ip the instruction pointer
121 :			\ sp the data stack pointer
122 :			\ rp the parameter stack pointer
123 :			\ lp the locals stack pointer
124 :			\ NEXT executes NEXT
125 :			\ cfa
126 :			\ NEXT1 executes NEXT1
127 :			\ FLAG(x) makes a Forth flag from a C flag
128 :			\
129 :			\
130 :			\
131 :			\ Percentages in comments are from Koopmans book: average/maximum use
132 :			\ (taken from four, not very representative benchmarks)
133 :			\
134 :			\
135 :			\
136 :			\ To do:
137 :			\
138 :			\ throw execute, cfa and NEXT1 out?
139 :			\ macroize ip, ip++, ip++ (pipelining)?
140 :
141 :	anton	1.145	\ Stack caching setup
142 :
143 :	anton	1.173	ifdef(`STACK_CACHE_FILE', `include(STACK_CACHE_FILE)', `include(cache0.vmg)')
144 :	anton	1.145
145 :	anton	1.1	\ these m4 macros would collide with identifiers
146 :			undefine(`index')
147 :			undefine(`shift')
148 :	pazsan	1.78	undefine(`symbols')
149 :	anton	1.1
150 :	anton	1.140	\F 0 [if]
151 :
152 :	anton	1.139	\ run-time routines for non-primitives. They are defined as
153 :			\ primitives, because that simplifies things.
154 :
155 :			(docol) ( -- R:a_retaddr ) gforth-internal paren_docol
156 :			""run-time routine for colon definitions""
157 :	anton	1.148	#ifdef NO_IP
158 :			a_retaddr = next_code;
159 :			INST_TAIL;
160 :			goto *(Label )PFA(CFA);
161 :			#else /* !defined(NO_IP) */
162 :	anton	1.141	a_retaddr = (Cell *)IP;
163 :	anton	1.139	SET_IP((Xt *)PFA(CFA));
164 :	anton	1.148	#endif /* !defined(NO_IP) */
165 :	anton	1.139
166 :			(docon) ( -- w ) gforth-internal paren_docon
167 :			""run-time routine for constants""
168 :			w = (Cell )PFA(CFA);
169 :	anton	1.148	#ifdef NO_IP
170 :			INST_TAIL;
171 :			goto *next_code;
172 :			#endif /* defined(NO_IP) */
173 :	anton	1.139
174 :			(dovar) ( -- a_body ) gforth-internal paren_dovar
175 :			""run-time routine for variables and CREATEd words""
176 :			a_body = PFA(CFA);
177 :	anton	1.148	#ifdef NO_IP
178 :			INST_TAIL;
179 :			goto *next_code;
180 :			#endif /* defined(NO_IP) */
181 :	anton	1.139
182 :			(douser) ( -- a_user ) gforth-internal paren_douser
183 :			""run-time routine for constants""
184 :			a_user = (Cell )(up+(Cell *)PFA(CFA));
185 :	anton	1.148	#ifdef NO_IP
186 :			INST_TAIL;
187 :			goto *next_code;
188 :			#endif /* defined(NO_IP) */
189 :	anton	1.139
190 :			(dodefer) ( -- ) gforth-internal paren_dodefer
191 :			""run-time routine for deferred words""
192 :	anton	1.148	#ifndef NO_IP
193 :	anton	1.141	ip=IP; /* undo any ip updating that may have been performed by NEXT_P0 */
194 :	anton	1.148	#endif /* !defined(NO_IP) */
195 :	anton	1.141	SUPER_END; /* !! probably unnecessary and may lead to measurement errors */
196 :	anton	1.161	VM_JUMP(EXEC1((Xt )PFA(CFA)));
197 :	anton	1.139
198 :			(dofield) ( n1 -- n2 ) gforth-internal paren_field
199 :			""run-time routine for fields""
200 :			n2 = n1 + (Cell )PFA(CFA);
201 :	anton	1.148	#ifdef NO_IP
202 :			INST_TAIL;
203 :			goto *next_code;
204 :			#endif /* defined(NO_IP) */
205 :	anton	1.139
206 :			(dodoes) ( -- a_body R:a_retaddr ) gforth-internal paren_dodoes
207 :			""run-time routine for @code{does>}-defined words""
208 :	anton	1.148	#ifdef NO_IP
209 :			a_retaddr = next_code;
210 :			a_body = PFA(CFA);
211 :			INST_TAIL;
212 :	pazsan	1.211	#ifdef DEBUG
213 :			fprintf(stderr, "dodoes to %x, push %x\n", a_retaddr, a_body);
214 :			#endif
215 :	anton	1.148	goto *(Label )DOES_CODE1(CFA);
216 :			#else /* !defined(NO_IP) */
217 :	anton	1.141	a_retaddr = (Cell *)IP;
218 :	anton	1.139	a_body = PFA(CFA);
219 :	pazsan	1.211	#ifdef DEBUG
220 :			fprintf(stderr, "dodoes to %x, push %x\n", a_retaddr, a_body);
221 :			#endif
222 :	anton	1.139	SET_IP(DOES_CODE1(CFA));
223 :	anton	1.148	#endif /* !defined(NO_IP) */
224 :	anton	1.139
225 :			(does-handler) ( -- ) gforth-internal paren_does_handler
226 :			""just a slot to have an encoding for the DOESJUMP,
227 :			which is no longer used anyway (!! eliminate this)""
228 :	anton	1.140
229 :			\F [endif]
230 :	anton	1.139
231 :	pazsan	1.83	\g control
232 :
233 :	anton	1.47	noop ( -- ) gforth
234 :	anton	1.1	:
235 :			;
236 :
237 :	pazsan	1.112	call ( #a_callee -- R:a_retaddr ) new
238 :			""Call callee (a variant of docol with inline argument).""
239 :			#ifdef NO_IP
240 :	anton	1.148	assert(0);
241 :	pazsan	1.112	INST_TAIL;
242 :			JUMP(a_callee);
243 :			#else
244 :			#ifdef DEBUG
245 :			{
246 :			CFA_TO_NAME((((Cell *)a_callee)-2));
247 :			fprintf(stderr,"%08lx: call %08lx %.*s\n",(Cell)ip,(Cell)a_callee,
248 :			len,name);
249 :			}
250 :			#endif
251 :			a_retaddr = (Cell *)IP;
252 :			SET_IP((Xt *)a_callee);
253 :			#endif
254 :	anton	1.1
255 :	anton	1.47	execute ( xt -- ) core
256 :	crook	1.29	""Perform the semantics represented by the execution token, @i{xt}.""
257 :	pazsan	1.210	#ifdef DEBUG
258 :			fprintf(stderr, "execute %08x\n", xt);
259 :			#endif
260 :	anton	1.102	#ifndef NO_IP
261 :	anton	1.1	ip=IP;
262 :	anton	1.102	#endif
263 :	anton	1.76	SUPER_END;
264 :	anton	1.161	VM_JUMP(EXEC1(xt));
265 :	anton	1.1
266 :	anton	1.47	perform ( a_addr -- ) gforth
267 :	anton	1.55	""@code{@@ execute}.""
268 :	anton	1.1	/* and pfe */
269 :	anton	1.102	#ifndef NO_IP
270 :	anton	1.1	ip=IP;
271 :	anton	1.102	#endif
272 :	anton	1.76	SUPER_END;
273 :	anton	1.161	VM_JUMP(EXEC1((Xt )a_addr));
274 :	anton	1.1	:
275 :			@ execute ;
276 :
277 :	pazsan	1.112	;s ( R:w -- ) gforth semis
278 :			""The primitive compiled by @code{EXIT}.""
279 :			#ifdef NO_IP
280 :			INST_TAIL;
281 :			goto (void )w;
282 :			#else
283 :			SET_IP((Xt *)w);
284 :			#endif
285 :
286 :			unloop ( R:w1 R:w2 -- ) core
287 :			/* !! alias for 2rdrop */
288 :			:
289 :			r> rdrop rdrop >r ;
290 :
291 :			lit-perform ( #a_addr -- ) new lit_perform
292 :			#ifndef NO_IP
293 :			ip=IP;
294 :			#endif
295 :			SUPER_END;
296 :	anton	1.161	VM_JUMP(EXEC1((Xt )a_addr));
297 :	pazsan	1.112
298 :			does-exec ( #a_cfa -- R:nest a_pfa ) new does_exec
299 :			#ifdef NO_IP
300 :			/* compiled to LIT CALL by compile_prim */
301 :			assert(0);
302 :			#else
303 :			a_pfa = PFA(a_cfa);
304 :			nest = (Cell)IP;
305 :			#ifdef DEBUG
306 :			{
307 :			CFA_TO_NAME(a_cfa);
308 :			fprintf(stderr,"%08lx: does %08lx %.*s\n",
309 :			(Cell)ip,(Cell)a_cfa,len,name);
310 :			}
311 :			#endif
312 :			SET_IP(DOES_CODE1(a_cfa));
313 :			#endif
314 :
315 :	pazsan	1.15	\+glocals
316 :	anton	1.1
317 :	pazsan	1.112	branch-lp+!# ( #a_target #nlocals -- ) gforth branch_lp_plus_store_number
318 :	anton	1.1	/* this will probably not be used */
319 :	anton	1.68	lp += nlocals;
320 :	pazsan	1.112	#ifdef NO_IP
321 :			INST_TAIL;
322 :			JUMP(a_target);
323 :			#else
324 :			SET_IP((Xt *)a_target);
325 :			#endif
326 :	anton	1.1
327 :	pazsan	1.15	\+
328 :	anton	1.1
329 :	pazsan	1.112	branch ( #a_target -- ) gforth
330 :			#ifdef NO_IP
331 :			INST_TAIL;
332 :			JUMP(a_target);
333 :			#else
334 :			SET_IP((Xt *)a_target);
335 :			#endif
336 :	anton	1.1	:
337 :	pazsan	1.112	r> @ >r ;
338 :	anton	1.1
339 :	pazsan	1.112	\ condbranch(forthname,stackeffect,restline,code1,code2,forthcode)
340 :	anton	1.1	\ this is non-syntactical: code must open a brace that is closed by the macro
341 :			define(condbranch,
342 :	anton	1.159	$1 ( `#'a_target $2 ) $3
343 :			$4 #ifdef NO_IP
344 :			INST_TAIL;
345 :			#endif
346 :			$5 #ifdef NO_IP
347 :			JUMP(a_target);
348 :			#else
349 :			SET_IP((Xt *)a_target);
350 :	anton	1.214	ifelse(condbranch_opt,`1',`INST_TAIL; NEXT_P2;',`/* condbranch_opt=0 */')
351 :	anton	1.159	#endif
352 :			}
353 :	anton	1.214	ifelse(condbranch_opt,`1',`SUPER_CONTINUE;',`/* condbranch_opt=0 */')
354 :	anton	1.159	$6
355 :
356 :			\+glocals
357 :
358 :			$1-lp+!`#' ( `#'a_target `#'nlocals $2 ) $3_lp_plus_store_number
359 :			$4 #ifdef NO_IP
360 :			INST_TAIL;
361 :			#endif
362 :			$5 lp += nlocals;
363 :			#ifdef NO_IP
364 :			JUMP(a_target);
365 :			#else
366 :			SET_IP((Xt *)a_target);
367 :	anton	1.214	ifelse(condbranch_opt,`1',`INST_TAIL; NEXT_P2;',`/* condbranch_opt=0 */')
368 :	anton	1.159	#endif
369 :			}
370 :	anton	1.214	ifelse(condbranch_opt,`1',`SUPER_CONTINUE;',`/* condbranch_opt=0 */')
371 :	anton	1.1
372 :	pazsan	1.15	\+
373 :	anton	1.1	)
374 :
375 :	anton	1.68	condbranch(?branch,f --,f83 question_branch,
376 :	pazsan	1.112	,if (f==0) {
377 :	jwilke	1.5	,:
378 :	pazsan	1.112	0= dup 0= \ !f f
379 :			r> tuck cell+ \ !f branchoffset f IP+
380 :			and -rot @ and or \ f&IP+\|!f&branch
381 :	jwilke	1.5	>r ;)
382 :	anton	1.1
383 :			\ we don't need an lp_plus_store version of the ?dup-stuff, because it
384 :			\ is only used in if's (yet)
385 :
386 :	pazsan	1.15	\+xconds
387 :	anton	1.1
388 :	anton	1.172	?dup-?branch ( #a_target f -- S:... ) new question_dupe_question_branch
389 :	anton	1.1	""The run-time procedure compiled by @code{?DUP-IF}.""
390 :			if (f==0) {
391 :	pazsan	1.112	#ifdef NO_IP
392 :			INST_TAIL;
393 :			JUMP(a_target);
394 :			#else
395 :			SET_IP((Xt *)a_target);
396 :			#endif
397 :	anton	1.174	} else {
398 :	anton	1.172	sp--;
399 :			sp[0]=f;
400 :	anton	1.174	}
401 :	anton	1.1
402 :	anton	1.172	?dup-0=-?branch ( #a_target f -- S:... ) new question_dupe_zero_equals_question_branch
403 :	anton	1.1	""The run-time procedure compiled by @code{?DUP-0=-IF}.""
404 :			if (f!=0) {
405 :			sp--;
406 :	anton	1.172	sp[0]=f;
407 :	pazsan	1.112	#ifdef NO_IP
408 :			JUMP(a_target);
409 :			#else
410 :			SET_IP((Xt *)a_target);
411 :			#endif
412 :	anton	1.1	}
413 :
414 :	pazsan	1.15	\+
415 :	jwilke	1.31	\fhas? skiploopprims 0= [IF]
416 :	anton	1.1
417 :	anton	1.68	condbranch((next),R:n1 -- R:n2,cmFORTH paren_next,
418 :	anton	1.65	n2=n1-1;
419 :	pazsan	1.112	,if (n1) {
420 :	anton	1.1	,:
421 :			r> r> dup 1- >r
422 :	pazsan	1.112	IF @ >r ELSE cell+ >r THEN ;)
423 :	anton	1.1
424 :	anton	1.68	condbranch((loop),R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_loop,
425 :	anton	1.65	n2=n1+1;
426 :	pazsan	1.112	,if (n2 != nlimit) {
427 :	anton	1.1	,:
428 :			r> r> 1+ r> 2dup =
429 :			IF >r 1- >r cell+ >r
430 :	pazsan	1.112	ELSE >r >r @ >r THEN ;)
431 :	anton	1.1
432 :	anton	1.68	condbranch((+loop),n R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_plus_loop,
433 :	anton	1.1	/* !! check this thoroughly */
434 :			/* sign bit manipulation and test: (x^y)<0 is equivalent to (x<0) != (y<0) */
435 :			/* dependent upon two's complement arithmetic */
436 :	anton	1.65	Cell olddiff = n1-nlimit;
437 :			n2=n1+n;
438 :	anton	1.149	,if (((olddiff^(olddiff+n)) /* the limit is not crossed */
439 :			&(olddiff^n)) /* OR it is a wrap-around effect */
440 :			>=0) { /* & is used to avoid having two branches for gforth-native */
441 :	anton	1.1	,:
442 :			r> swap
443 :			r> r> 2dup - >r
444 :			2 pick r@ + r@ xor 0< 0=
445 :			3 pick r> xor 0< 0= or
446 :	pazsan	1.112	IF >r + >r @ >r
447 :	anton	1.1	ELSE >r >r drop cell+ >r THEN ;)
448 :
449 :	pazsan	1.15	\+xconds
450 :	anton	1.1
451 :	anton	1.68	condbranch((-loop),u R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_minus_loop,
452 :	anton	1.65	UCell olddiff = n1-nlimit;
453 :			n2=n1-u;
454 :	pazsan	1.112	,if (olddiff>u) {
455 :	anton	1.1	,)
456 :
457 :	anton	1.68	condbranch((s+loop),n R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_symmetric_plus_loop,
458 :	anton	1.1	""The run-time procedure compiled by S+LOOP. It loops until the index
459 :			crosses the boundary between limit and limit-sign(n). I.e. a symmetric
460 :			version of (+LOOP).""
461 :			/* !! check this thoroughly */
462 :	anton	1.65	Cell diff = n1-nlimit;
463 :	anton	1.1	Cell newdiff = diff+n;
464 :			if (n<0) {
465 :			diff = -diff;
466 :			newdiff = -newdiff;
467 :			}
468 :	anton	1.65	n2=n1+n;
469 :	anton	1.149	,if (((~diff)\|newdiff)<0) { /* use \| to avoid two branches for gforth-native */
470 :	anton	1.1	,)
471 :
472 :	pazsan	1.15	\+
473 :	anton	1.1
474 :	pazsan	1.112	(for) ( ncount -- R:nlimit R:ncount ) cmFORTH paren_for
475 :	anton	1.1	/* or (for) = >r -- collides with unloop! */
476 :	anton	1.65	nlimit=0;
477 :	anton	1.1	:
478 :			r> swap 0 >r >r >r ;
479 :
480 :	pazsan	1.112	(do) ( nlimit nstart -- R:nlimit R:nstart ) gforth paren_do
481 :	anton	1.1	:
482 :			r> swap rot >r >r >r ;
483 :
484 :	pazsan	1.112	(?do) ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth paren_question_do
485 :			#ifdef NO_IP
486 :			INST_TAIL;
487 :			#endif
488 :	anton	1.1	if (nstart == nlimit) {
489 :	pazsan	1.112	#ifdef NO_IP
490 :			JUMP(a_target);
491 :			#else
492 :			SET_IP((Xt *)a_target);
493 :			#endif
494 :	anton	1.1	}
495 :			:
496 :			2dup =
497 :			IF r> swap rot >r >r
498 :	pazsan	1.112	@ >r
499 :	anton	1.1	ELSE r> swap rot >r >r
500 :			cell+ >r
501 :			THEN ; \ --> CORE-EXT
502 :
503 :	pazsan	1.15	\+xconds
504 :	anton	1.1
505 :	pazsan	1.112	(+do) ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth paren_plus_do
506 :			#ifdef NO_IP
507 :			INST_TAIL;
508 :			#endif
509 :	anton	1.1	if (nstart >= nlimit) {
510 :	pazsan	1.112	#ifdef NO_IP
511 :			JUMP(a_target);
512 :			#else
513 :			SET_IP((Xt *)a_target);
514 :			#endif
515 :	anton	1.1	}
516 :			:
517 :			swap 2dup
518 :			r> swap >r swap >r
519 :			>=
520 :			IF
521 :	pazsan	1.112	@
522 :	anton	1.1	ELSE
523 :			cell+
524 :			THEN >r ;
525 :
526 :	pazsan	1.112	(u+do) ( #a_target ulimit ustart -- R:ulimit R:ustart ) gforth paren_u_plus_do
527 :			#ifdef NO_IP
528 :			INST_TAIL;
529 :			#endif
530 :	anton	1.1	if (ustart >= ulimit) {
531 :	pazsan	1.112	#ifdef NO_IP
532 :			JUMP(a_target);
533 :			#else
534 :			SET_IP((Xt *)a_target);
535 :			#endif
536 :	anton	1.1	}
537 :			:
538 :			swap 2dup
539 :			r> swap >r swap >r
540 :			u>=
541 :			IF
542 :	pazsan	1.112	@
543 :	anton	1.1	ELSE
544 :			cell+
545 :			THEN >r ;
546 :
547 :	pazsan	1.112	(-do) ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth paren_minus_do
548 :			#ifdef NO_IP
549 :			INST_TAIL;
550 :			#endif
551 :	anton	1.1	if (nstart <= nlimit) {
552 :	pazsan	1.112	#ifdef NO_IP
553 :			JUMP(a_target);
554 :			#else
555 :			SET_IP((Xt *)a_target);
556 :			#endif
557 :	anton	1.1	}
558 :			:
559 :			swap 2dup
560 :			r> swap >r swap >r
561 :			<=
562 :			IF
563 :	pazsan	1.112	@
564 :	anton	1.1	ELSE
565 :			cell+
566 :			THEN >r ;
567 :
568 :	pazsan	1.112	(u-do) ( #a_target ulimit ustart -- R:ulimit R:ustart ) gforth paren_u_minus_do
569 :			#ifdef NO_IP
570 :			INST_TAIL;
571 :			#endif
572 :	anton	1.1	if (ustart <= ulimit) {
573 :	pazsan	1.112	#ifdef NO_IP
574 :			JUMP(a_target);
575 :			#else
576 :			SET_IP((Xt *)a_target);
577 :			#endif
578 :	anton	1.1	}
579 :			:
580 :			swap 2dup
581 :			r> swap >r swap >r
582 :			u<=
583 :			IF
584 :	pazsan	1.112	@
585 :	anton	1.1	ELSE
586 :			cell+
587 :			THEN >r ;
588 :
589 :	pazsan	1.15	\+
590 :	anton	1.1
591 :	jwilke	1.5	\ don't make any assumptions where the return stack is!!
592 :			\ implement this in machine code if it should run quickly!
593 :
594 :	anton	1.65	i ( R:n -- R:n n ) core
595 :	anton	1.1	:
596 :	jwilke	1.5	\ rp@ cell+ @ ;
597 :			r> r> tuck >r >r ;
598 :	anton	1.1
599 :	anton	1.65	i' ( R:w R:w2 -- R:w R:w2 w ) gforth i_tick
600 :	anton	1.1	:
601 :	jwilke	1.5	\ rp@ cell+ cell+ @ ;
602 :			r> r> r> dup itmp ! >r >r >r itmp @ ;
603 :			variable itmp
604 :	anton	1.1
605 :	anton	1.215	j ( R:w R:w1 R:w2 -- w R:w R:w1 R:w2 ) core
606 :	anton	1.1	:
607 :	jwilke	1.5	\ rp@ cell+ cell+ cell+ @ ;
608 :			r> r> r> r> dup itmp ! >r >r >r >r itmp @ ;
609 :			[IFUNDEF] itmp variable itmp [THEN]
610 :	anton	1.1
611 :	anton	1.215	k ( R:w R:w1 R:w2 R:w3 R:w4 -- w R:w R:w1 R:w2 R:w3 R:w4 ) gforth
612 :	anton	1.1	:
613 :	jwilke	1.5	\ rp@ [ 5 cells ] Literal + @ ;
614 :			r> r> r> r> r> r> dup itmp ! >r >r >r >r >r >r itmp @ ;
615 :			[IFUNDEF] itmp variable itmp [THEN]
616 :	jwilke	1.31
617 :			\f[THEN]
618 :	anton	1.1
619 :			\ digit is high-level: 0/0%
620 :
621 :	pazsan	1.83	\g strings
622 :
623 :	anton	1.47	move ( c_from c_to ucount -- ) core
624 :	anton	1.52	""Copy the contents of @i{ucount} aus at @i{c-from} to
625 :	anton	1.33	@i{c-to}. @code{move} works correctly even if the two areas overlap.""
626 :	anton	1.52	/* !! note that the standard specifies addr, not c-addr */
627 :	anton	1.1	memmove(c_to,c_from,ucount);
628 :			/* make an Ifdef for bsd and others? */
629 :			:
630 :			>r 2dup u< IF r> cmove> ELSE r> cmove THEN ;
631 :
632 :	anton	1.47	cmove ( c_from c_to u -- ) string c_move
633 :	anton	1.33	""Copy the contents of @i{ucount} characters from data space at
634 :			@i{c-from} to @i{c-to}. The copy proceeds @code{char}-by-@code{char}
635 :			from low address to high address; i.e., for overlapping areas it is
636 :			safe if @i{c-to}=<@i{c-from}.""
637 :	anton	1.125	cmove(c_from,c_to,u);
638 :	anton	1.1	:
639 :			bounds ?DO dup c@ I c! 1+ LOOP drop ;
640 :
641 :	anton	1.47	cmove> ( c_from c_to u -- ) string c_move_up
642 :	anton	1.33	""Copy the contents of @i{ucount} characters from data space at
643 :			@i{c-from} to @i{c-to}. The copy proceeds @code{char}-by-@code{char}
644 :			from high address to low address; i.e., for overlapping areas it is
645 :			safe if @i{c-to}>=@i{c-from}.""
646 :	anton	1.125	cmove_up(c_from,c_to,u);
647 :	anton	1.1	:
648 :			dup 0= IF drop 2drop exit THEN
649 :			rot over + -rot bounds swap 1-
650 :			DO 1- dup c@ I c! -1 +LOOP drop ;
651 :
652 :	anton	1.47	fill ( c_addr u c -- ) core
653 :	anton	1.52	""Store @i{c} in @i{u} chars starting at @i{c-addr}.""
654 :	anton	1.1	memset(c_addr,c,u);
655 :			:
656 :			-rot bounds
657 :			?DO dup I c! LOOP drop ;
658 :
659 :	anton	1.47	compare ( c_addr1 u1 c_addr2 u2 -- n ) string
660 :	crook	1.29	""Compare two strings lexicographically. If they are equal, @i{n} is 0; if
661 :			the first string is smaller, @i{n} is -1; if the first string is larger, @i{n}
662 :	anton	1.1	is 1. Currently this is based on the machine's character
663 :	crook	1.26	comparison. In the future, this may change to consider the current
664 :	anton	1.1	locale and its collation order.""
665 :	pazsan	1.46	/* close ' to keep fontify happy */
666 :	anton	1.125	n = compare(c_addr1, u1, c_addr2, u2);
667 :	anton	1.1	:
668 :	pazsan	1.43	rot 2dup swap - >r min swap -text dup
669 :			IF rdrop ELSE drop r> sgn THEN ;
670 :	pazsan	1.143	: -text ( c_addr1 u c_addr2 -- n )
671 :			swap bounds
672 :			?DO dup c@ I c@ = WHILE 1+ LOOP drop 0
673 :			ELSE c@ I c@ - unloop THEN sgn ;
674 :	pazsan	1.43	: sgn ( n -- -1/0/1 )
675 :			dup 0= IF EXIT THEN 0< 2* 1+ ;
676 :	anton	1.1
677 :	anton	1.125	\ -text is only used by replaced primitives now; move it elsewhere
678 :			\ -text ( c_addr1 u c_addr2 -- n ) new dash_text
679 :			\ n = memcmp(c_addr1, c_addr2, u);
680 :			\ if (n<0)
681 :			\ n = -1;
682 :			\ else if (n>0)
683 :			\ n = 1;
684 :			\ :
685 :			\ swap bounds
686 :			\ ?DO dup c@ I c@ = WHILE 1+ LOOP drop 0
687 :			\ ELSE c@ I c@ - unloop THEN sgn ;
688 :			\ : sgn ( n -- -1/0/1 )
689 :			\ dup 0= IF EXIT THEN 0< 2* 1+ ;
690 :	anton	1.1
691 :	anton	1.47	toupper ( c1 -- c2 ) gforth
692 :	crook	1.29	""If @i{c1} is a lower-case character (in the current locale), @i{c2}
693 :	anton	1.25	is the equivalent upper-case character. All other characters are unchanged.""
694 :	anton	1.1	c2 = toupper(c1);
695 :			:
696 :			dup [char] a - [ char z char a - 1 + ] Literal u< bl and - ;
697 :
698 :	pazsan	1.188	capscompare ( c_addr1 u1 c_addr2 u2 -- n ) string
699 :			""Compare two strings lexicographically. If they are equal, @i{n} is 0; if
700 :			the first string is smaller, @i{n} is -1; if the first string is larger, @i{n}
701 :			is 1. Currently this is based on the machine's character
702 :			comparison. In the future, this may change to consider the current
703 :			locale and its collation order.""
704 :			/* close ' to keep fontify happy */
705 :			n = capscompare(c_addr1, u1, c_addr2, u2);
706 :
707 :	anton	1.47	/string ( c_addr1 u1 n -- c_addr2 u2 ) string slash_string
708 :	crook	1.29	""Adjust the string specified by @i{c-addr1, u1} to remove @i{n}
709 :	crook	1.27	characters from the start of the string.""
710 :	anton	1.1	c_addr2 = c_addr1+n;
711 :			u2 = u1-n;
712 :			:
713 :			tuck - >r + r> dup 0< IF - 0 THEN ;
714 :
715 :	pazsan	1.83	\g arith
716 :
717 :	pazsan	1.112	lit ( #w -- w ) gforth
718 :			:
719 :			r> dup @ swap cell+ >r ;
720 :
721 :	anton	1.47	+ ( n1 n2 -- n ) core plus
722 :	anton	1.1	n = n1+n2;
723 :
724 :	pazsan	1.112	\ lit+ / lit_plus = lit +
725 :
726 :			lit+ ( n1 #n2 -- n ) new lit_plus
727 :	pazsan	1.211	#ifdef DEBUG
728 :			fprintf(stderr, "lit+ %08x\n", n2);
729 :			#endif
730 :	pazsan	1.112	n=n1+n2;
731 :
732 :	anton	1.1	\ PFE-0.9.14 has it differently, but the next release will have it as follows
733 :	anton	1.47	under+ ( n1 n2 n3 -- n n2 ) gforth under_plus
734 :	crook	1.29	""add @i{n3} to @i{n1} (giving @i{n})""
735 :	anton	1.1	n = n1+n3;
736 :			:
737 :			rot + swap ;
738 :
739 :	anton	1.47	- ( n1 n2 -- n ) core minus
740 :	anton	1.1	n = n1-n2;
741 :			:
742 :			negate + ;
743 :
744 :	anton	1.47	negate ( n1 -- n2 ) core
745 :	anton	1.1	/* use minus as alias */
746 :			n2 = -n1;
747 :			:
748 :			invert 1+ ;
749 :
750 :	anton	1.47	1+ ( n1 -- n2 ) core one_plus
751 :	anton	1.1	n2 = n1+1;
752 :			:
753 :			1 + ;
754 :
755 :	anton	1.47	1- ( n1 -- n2 ) core one_minus
756 :	anton	1.1	n2 = n1-1;
757 :			:
758 :			1 - ;
759 :
760 :	anton	1.47	max ( n1 n2 -- n ) core
761 :	anton	1.1	if (n1<n2)
762 :			n = n2;
763 :			else
764 :			n = n1;
765 :			:
766 :			2dup < IF swap THEN drop ;
767 :
768 :	anton	1.47	min ( n1 n2 -- n ) core
769 :	anton	1.1	if (n1<n2)
770 :			n = n1;
771 :			else
772 :			n = n2;
773 :			:
774 :			2dup > IF swap THEN drop ;
775 :
776 :	anton	1.52	abs ( n -- u ) core
777 :			if (n<0)
778 :			u = -n;
779 :	anton	1.1	else
780 :	anton	1.52	u = n;
781 :	anton	1.1	:
782 :			dup 0< IF negate THEN ;
783 :
784 :	anton	1.47	* ( n1 n2 -- n ) core star
785 :	anton	1.1	n = n1*n2;
786 :			:
787 :			um* drop ;
788 :
789 :	anton	1.47	/ ( n1 n2 -- n ) core slash
790 :	anton	1.1	n = n1/n2;
791 :	anton	1.200	if (CHECK_DIVISION_SW && n2 == 0)
792 :	anton	1.198	throw(BALL_DIVZERO);
793 :	anton	1.200	if (CHECK_DIVISION_SW && n2 == -1 && n1 == CELL_MIN)
794 :	anton	1.198	throw(BALL_RESULTRANGE);
795 :	anton	1.197	if (FLOORED_DIV && ((n1^n2) < 0) && (n1%n2 != 0))
796 :			n--;
797 :	anton	1.1	:
798 :			/mod nip ;
799 :
800 :	anton	1.47	mod ( n1 n2 -- n ) core
801 :	anton	1.1	n = n1%n2;
802 :	anton	1.200	if (CHECK_DIVISION_SW && n2 == 0)
803 :	anton	1.198	throw(BALL_DIVZERO);
804 :	anton	1.200	if (CHECK_DIVISION_SW && n2 == -1 && n1 == CELL_MIN)
805 :	anton	1.198	throw(BALL_RESULTRANGE);
806 :	pazsan	1.169	if(FLOORED_DIV && ((n1^n2) < 0) && n!=0) n += n2;
807 :	anton	1.1	:
808 :			/mod drop ;
809 :
810 :	anton	1.47	/mod ( n1 n2 -- n3 n4 ) core slash_mod
811 :	anton	1.1	n4 = n1/n2;
812 :			n3 = n1%n2; /* !! is this correct? look into C standard! */
813 :	anton	1.200	if (CHECK_DIVISION_SW && n2 == 0)
814 :	anton	1.198	throw(BALL_DIVZERO);
815 :	anton	1.200	if (CHECK_DIVISION_SW && n2 == -1 && n1 == CELL_MIN)
816 :	anton	1.198	throw(BALL_RESULTRANGE);
817 :	pazsan	1.169	if (FLOORED_DIV && ((n1^n2) < 0) && n3!=0) {
818 :	pazsan	1.162	n4--;
819 :			n3+=n2;
820 :			}
821 :	anton	1.1	:
822 :			>r s>d r> fm/mod ;
823 :
824 :	pazsan	1.162	*/mod ( n1 n2 n3 -- n4 n5 ) core star_slash_mod
825 :			""n1n2=n3n5+n4, with the intermediate result (n1*n2) being double.""
826 :			#ifdef BUGGY_LL_MUL
827 :			DCell d = mmul(n1,n2);
828 :			#else
829 :			DCell d = (DCell)n1 * (DCell)n2;
830 :			#endif
831 :	anton	1.202	#ifdef ASM_SM_SLASH_REM
832 :			ASM_SM_SLASH_REM(DLO(d), DHI(d), n3, n4, n5);
833 :	anton	1.207	if (FLOORED_DIV && ((DHI(d)^n3)<0) && n4!=0) {
834 :	anton	1.202	if (CHECK_DIVISION && n5 == CELL_MIN)
835 :			throw(BALL_RESULTRANGE);
836 :			n5--;
837 :			n4+=n3;
838 :			}
839 :			#else
840 :	anton	1.207	DCell r = FLOORED_DIV ? fmdiv(d,n3) : smdiv(d,n3);
841 :	pazsan	1.162	n4=DHI(r);
842 :			n5=DLO(r);
843 :			#endif
844 :			:
845 :			>r m* r> fm/mod ;
846 :
847 :			*/ ( n1 n2 n3 -- n4 ) core star_slash
848 :			""n4=(n1*n2)/n3, with the intermediate result being double.""
849 :			#ifdef BUGGY_LL_MUL
850 :			DCell d = mmul(n1,n2);
851 :			#else
852 :			DCell d = (DCell)n1 * (DCell)n2;
853 :			#endif
854 :	anton	1.202	#ifdef ASM_SM_SLASH_REM
855 :			Cell remainder;
856 :			ASM_SM_SLASH_REM(DLO(d), DHI(d), n3, remainder, n4);
857 :	anton	1.207	if (FLOORED_DIV && ((DHI(d)^n3)<0) && remainder!=0) {
858 :	anton	1.202	if (CHECK_DIVISION && n4 == CELL_MIN)
859 :			throw(BALL_RESULTRANGE);
860 :			n4--;
861 :			}
862 :			#else
863 :	anton	1.207	DCell r = FLOORED_DIV ? fmdiv(d,n3) : smdiv(d,n3);
864 :	pazsan	1.168	n4=DLO(r);
865 :	pazsan	1.162	#endif
866 :			:
867 :			*/mod nip ;
868 :
869 :	anton	1.47	2* ( n1 -- n2 ) core two_star
870 :	anton	1.52	""Shift left by 1; also works on unsigned numbers""
871 :	anton	1.1	n2 = 2*n1;
872 :			:
873 :			dup + ;
874 :
875 :	anton	1.47	2/ ( n1 -- n2 ) core two_slash
876 :	anton	1.52	""Arithmetic shift right by 1. For signed numbers this is a floored
877 :			division by 2 (note that @code{/} not necessarily floors).""
878 :	anton	1.1	n2 = n1>>1;
879 :			:
880 :			dup MINI and IF 1 ELSE 0 THEN
881 :	pazsan	1.187	[ bits/char cell * 1- ] literal
882 :	jwilke	1.5	0 DO 2* swap dup 2* >r MINI and
883 :	anton	1.1	IF 1 ELSE 0 THEN or r> swap
884 :			LOOP nip ;
885 :
886 :	anton	1.47	fm/mod ( d1 n1 -- n2 n3 ) core f_m_slash_mod
887 :	crook	1.29	""Floored division: @i{d1} = @i{n3}*@i{n1}+@i{n2}, @i{n1}>@i{n2}>=0 or 0>=@i{n2}>@i{n1}.""
888 :	anton	1.201	#ifdef ASM_SM_SLASH_REM
889 :	anton	1.203	ASM_SM_SLASH_REM(DLO(d1), DHI(d1), n1, n2, n3);
890 :	pazsan	1.169	if (((DHI(d1)^n1)<0) && n2!=0) {
891 :	anton	1.200	if (CHECK_DIVISION && n3 == CELL_MIN)
892 :	anton	1.198	throw(BALL_RESULTRANGE);
893 :	anton	1.165	n3--;
894 :			n2+=n1;
895 :			}
896 :	anton	1.201	#else /* !defined(ASM_SM_SLASH_REM) */
897 :			DCell r = fmdiv(d1,n1);
898 :			n2=DHI(r);
899 :			n3=DLO(r);
900 :	anton	1.203	#endif /* !defined(ASM_SM_SLASH_REM) */
901 :	anton	1.1	:
902 :			dup >r dup 0< IF negate >r dnegate r> THEN
903 :			over 0< IF tuck + swap THEN
904 :			um/mod
905 :			r> 0< IF swap negate swap THEN ;
906 :
907 :	anton	1.47	sm/rem ( d1 n1 -- n2 n3 ) core s_m_slash_rem
908 :	crook	1.29	""Symmetric division: @i{d1} = @i{n3}*@i{n1}+@i{n2}, sign(@i{n2})=sign(@i{d1}) or 0.""
909 :	anton	1.165	#ifdef ASM_SM_SLASH_REM
910 :	anton	1.203	ASM_SM_SLASH_REM(DLO(d1), DHI(d1), n1, n2, n3);
911 :	anton	1.165	#else /* !defined(ASM_SM_SLASH_REM) */
912 :	anton	1.1	DCell r = smdiv(d1,n1);
913 :	pazsan	1.162	n2=DHI(r);
914 :			n3=DLO(r);
915 :	anton	1.165	#endif /* !defined(ASM_SM_SLASH_REM) */
916 :	anton	1.1	:
917 :			over >r dup >r abs -rot
918 :			dabs rot um/mod
919 :			r> r@ xor 0< IF negate THEN
920 :			r> 0< IF swap negate swap THEN ;
921 :
922 :	anton	1.47	m* ( n1 n2 -- d ) core m_star
923 :	pazsan	1.158	#ifdef BUGGY_LL_MUL
924 :	anton	1.1	d = mmul(n1,n2);
925 :			#else
926 :			d = (DCell)n1 * (DCell)n2;
927 :			#endif
928 :			:
929 :			2dup 0< and >r
930 :			2dup swap 0< and >r
931 :			um* r> - r> - ;
932 :
933 :	anton	1.47	um* ( u1 u2 -- ud ) core u_m_star
934 :	anton	1.1	/* use u* as alias */
935 :	pazsan	1.158	#ifdef BUGGY_LL_MUL
936 :	anton	1.1	ud = ummul(u1,u2);
937 :			#else
938 :			ud = (UDCell)u1 * (UDCell)u2;
939 :			#endif
940 :			:
941 :	pazsan	1.137	0 -rot dup [ 8 cells ] literal -
942 :	anton	1.1	DO
943 :	pazsan	1.137	dup 0< I' and d2*+ drop
944 :			LOOP ;
945 :	anton	1.1	: d2*+ ( ud n -- ud+n c )
946 :			over MINI
947 :			and >r >r 2dup d+ swap r> + swap r> ;
948 :
949 :	anton	1.47	um/mod ( ud u1 -- u2 u3 ) core u_m_slash_mod
950 :	anton	1.32	""ud=u3*u1+u2, u1>u2>=0""
951 :	anton	1.165	#ifdef ASM_UM_SLASH_MOD
952 :	anton	1.203	ASM_UM_SLASH_MOD(DLO(ud), DHI(ud), u1, u2, u3);
953 :	anton	1.165	#else /* !defined(ASM_UM_SLASH_MOD) */
954 :	anton	1.1	UDCell r = umdiv(ud,u1);
955 :	pazsan	1.162	u2=DHI(r);
956 :			u3=DLO(r);
957 :	anton	1.165	#endif /* !defined(ASM_UM_SLASH_MOD) */
958 :	anton	1.1	:
959 :			0 swap [ 8 cells 1 + ] literal 0
960 :	jwilke	1.5	?DO /modstep
961 :	anton	1.1	LOOP drop swap 1 rshift or swap ;
962 :			: /modstep ( ud c R: u -- ud-?u c R: u )
963 :	jwilke	1.5	>r over r@ u< 0= or IF r@ - 1 ELSE 0 THEN d2*+ r> ;
964 :	anton	1.1	: d2*+ ( ud n -- ud+n c )
965 :			over MINI
966 :			and >r >r 2dup d+ swap r> + swap r> ;
967 :
968 :	anton	1.47	m+ ( d1 n -- d2 ) double m_plus
969 :	pazsan	1.158	#ifdef BUGGY_LL_ADD
970 :			DLO_IS(d2, DLO(d1)+n);
971 :			DHI_IS(d2, DHI(d1) - (n<0) + (DLO(d2)<DLO(d1)));
972 :	anton	1.1	#else
973 :			d2 = d1+n;
974 :			#endif
975 :			:
976 :			s>d d+ ;
977 :
978 :	anton	1.47	d+ ( d1 d2 -- d ) double d_plus
979 :	pazsan	1.158	#ifdef BUGGY_LL_ADD
980 :			DLO_IS(d, DLO(d1) + DLO(d2));
981 :			DHI_IS(d, DHI(d1) + DHI(d2) + (d.lo<DLO(d1)));
982 :	anton	1.1	#else
983 :			d = d1+d2;
984 :			#endif
985 :			:
986 :			rot + >r tuck + swap over u> r> swap - ;
987 :
988 :	anton	1.47	d- ( d1 d2 -- d ) double d_minus
989 :	pazsan	1.158	#ifdef BUGGY_LL_ADD
990 :			DLO_IS(d, DLO(d1) - DLO(d2));
991 :			DHI_IS(d, DHI(d1)-DHI(d2)-(DLO(d1)<DLO(d2)));
992 :	anton	1.1	#else
993 :			d = d1-d2;
994 :			#endif
995 :			:
996 :			dnegate d+ ;
997 :
998 :	anton	1.47	dnegate ( d1 -- d2 ) double d_negate
999 :	anton	1.1	/* use dminus as alias */
1000 :	pazsan	1.158	#ifdef BUGGY_LL_ADD
1001 :	anton	1.1	d2 = dnegate(d1);
1002 :			#else
1003 :			d2 = -d1;
1004 :			#endif
1005 :			:
1006 :			invert swap negate tuck 0= - ;
1007 :
1008 :	anton	1.47	d2* ( d1 -- d2 ) double d_two_star
1009 :	anton	1.52	""Shift left by 1; also works on unsigned numbers""
1010 :	anton	1.205	d2 = DLSHIFT(d1,1);
1011 :	anton	1.1	:
1012 :			2dup d+ ;
1013 :
1014 :	anton	1.47	d2/ ( d1 -- d2 ) double d_two_slash
1015 :	anton	1.52	""Arithmetic shift right by 1. For signed numbers this is a floored
1016 :			division by 2.""
1017 :	pazsan	1.158	#ifdef BUGGY_LL_SHIFT
1018 :			DHI_IS(d2, DHI(d1)>>1);
1019 :			DLO_IS(d2, (DLO(d1)>>1) \| (DHI(d1)<<(CELL_BITS-1)));
1020 :	anton	1.1	#else
1021 :			d2 = d1>>1;
1022 :			#endif
1023 :			:
1024 :			dup 1 and >r 2/ swap 2/ [ 1 8 cells 1- lshift 1- ] Literal and
1025 :			r> IF [ 1 8 cells 1- lshift ] Literal + THEN swap ;
1026 :
1027 :	anton	1.47	and ( w1 w2 -- w ) core
1028 :	anton	1.1	w = w1&w2;
1029 :
1030 :	anton	1.47	or ( w1 w2 -- w ) core
1031 :	anton	1.1	w = w1\|w2;
1032 :			:
1033 :			invert swap invert and invert ;
1034 :
1035 :	anton	1.47	xor ( w1 w2 -- w ) core x_or
1036 :	anton	1.1	w = w1^w2;
1037 :
1038 :	anton	1.47	invert ( w1 -- w2 ) core
1039 :	anton	1.1	w2 = ~w1;
1040 :			:
1041 :			MAXU xor ;
1042 :
1043 :	anton	1.47	rshift ( u1 n -- u2 ) core r_shift
1044 :	anton	1.53	""Logical shift right by @i{n} bits.""
1045 :	pazsan	1.154	#ifdef BROKEN_SHIFT
1046 :			u2 = rshift(u1, n);
1047 :			#else
1048 :			u2 = u1 >> n;
1049 :			#endif
1050 :	anton	1.1	:
1051 :			0 ?DO 2/ MAXI and LOOP ;
1052 :
1053 :	anton	1.47	lshift ( u1 n -- u2 ) core l_shift
1054 :	pazsan	1.154	#ifdef BROKEN_SHIFT
1055 :			u2 = lshift(u1, n);
1056 :			#else
1057 :			u2 = u1 << n;
1058 :			#endif
1059 :	anton	1.1	:
1060 :			0 ?DO 2* LOOP ;
1061 :
1062 :	pazsan	1.110	\g compare
1063 :
1064 :	anton	1.1	\ comparisons(prefix, args, prefix, arg1, arg2, wordsets...)
1065 :			define(comparisons,
1066 :	anton	1.47	$1= ( $2 -- f ) $6 $3equals
1067 :	anton	1.1	f = FLAG($4==$5);
1068 :			:
1069 :			[ char $1x char 0 = [IF]
1070 :			] IF false ELSE true THEN [
1071 :			[ELSE]
1072 :			] xor 0= [
1073 :			[THEN] ] ;
1074 :
1075 :	anton	1.47	$1<> ( $2 -- f ) $7 $3not_equals
1076 :	anton	1.1	f = FLAG($4!=$5);
1077 :			:
1078 :			[ char $1x char 0 = [IF]
1079 :			] IF true ELSE false THEN [
1080 :			[ELSE]
1081 :			] xor 0<> [
1082 :			[THEN] ] ;
1083 :
1084 :	anton	1.47	$1< ( $2 -- f ) $8 $3less_than
1085 :	anton	1.1	f = FLAG($4<$5);
1086 :			:
1087 :			[ char $1x char 0 = [IF]
1088 :			] MINI and 0<> [
1089 :			[ELSE] char $1x char u = [IF]
1090 :			] 2dup xor 0< IF nip ELSE - THEN 0< [
1091 :			[ELSE]
1092 :			] MINI xor >r MINI xor r> u< [
1093 :			[THEN]
1094 :			[THEN] ] ;
1095 :
1096 :	anton	1.47	$1> ( $2 -- f ) $9 $3greater_than
1097 :	anton	1.1	f = FLAG($4>$5);
1098 :			:
1099 :			[ char $1x char 0 = [IF] ] negate [ [ELSE] ] swap [ [THEN] ]
1100 :			$1< ;
1101 :
1102 :	anton	1.47	$1<= ( $2 -- f ) gforth $3less_or_equal
1103 :	anton	1.1	f = FLAG($4<=$5);
1104 :			:
1105 :			$1> 0= ;
1106 :
1107 :	anton	1.47	$1>= ( $2 -- f ) gforth $3greater_or_equal
1108 :	anton	1.1	f = FLAG($4>=$5);
1109 :			:
1110 :			[ char $1x char 0 = [IF] ] negate [ [ELSE] ] swap [ [THEN] ]
1111 :			$1<= ;
1112 :
1113 :			)
1114 :
1115 :			comparisons(0, n, zero_, n, 0, core, core-ext, core, core-ext)
1116 :			comparisons(, n1 n2, , n1, n2, core, core-ext, core, core)
1117 :			comparisons(u, u1 u2, u_, u1, u2, gforth, gforth, core, core-ext)
1118 :
1119 :			\ dcomparisons(prefix, args, prefix, arg1, arg2, wordsets...)
1120 :			define(dcomparisons,
1121 :	anton	1.47	$1= ( $2 -- f ) $6 $3equals
1122 :	pazsan	1.158	#ifdef BUGGY_LL_CMP
1123 :	anton	1.1	f = FLAG($4.lo==$5.lo && $4.hi==$5.hi);
1124 :			#else
1125 :			f = FLAG($4==$5);
1126 :			#endif
1127 :
1128 :	anton	1.47	$1<> ( $2 -- f ) $7 $3not_equals
1129 :	pazsan	1.158	#ifdef BUGGY_LL_CMP
1130 :	anton	1.1	f = FLAG($4.lo!=$5.lo \|\| $4.hi!=$5.hi);
1131 :			#else
1132 :			f = FLAG($4!=$5);
1133 :			#endif
1134 :
1135 :	anton	1.47	$1< ( $2 -- f ) $8 $3less_than
1136 :	pazsan	1.158	#ifdef BUGGY_LL_CMP
1137 :	anton	1.1	f = FLAG($4.hi==$5.hi ? $4.lo<$5.lo : $4.hi<$5.hi);
1138 :			#else
1139 :			f = FLAG($4<$5);
1140 :			#endif
1141 :
1142 :	anton	1.47	$1> ( $2 -- f ) $9 $3greater_than
1143 :	pazsan	1.158	#ifdef BUGGY_LL_CMP
1144 :	anton	1.1	f = FLAG($4.hi==$5.hi ? $4.lo>$5.lo : $4.hi>$5.hi);
1145 :			#else
1146 :			f = FLAG($4>$5);
1147 :			#endif
1148 :
1149 :	anton	1.47	$1<= ( $2 -- f ) gforth $3less_or_equal
1150 :	pazsan	1.158	#ifdef BUGGY_LL_CMP
1151 :	anton	1.1	f = FLAG($4.hi==$5.hi ? $4.lo<=$5.lo : $4.hi<=$5.hi);
1152 :			#else
1153 :			f = FLAG($4<=$5);
1154 :			#endif
1155 :
1156 :	anton	1.47	$1>= ( $2 -- f ) gforth $3greater_or_equal
1157 :	pazsan	1.158	#ifdef BUGGY_LL_CMP
1158 :	anton	1.1	f = FLAG($4.hi==$5.hi ? $4.lo>=$5.lo : $4.hi>=$5.hi);
1159 :			#else
1160 :			f = FLAG($4>=$5);
1161 :			#endif
1162 :
1163 :			)
1164 :
1165 :	pazsan	1.15	\+dcomps
1166 :	anton	1.1
1167 :			dcomparisons(d, d1 d2, d_, d1, d2, double, gforth, double, gforth)
1168 :			dcomparisons(d0, d, d_zero_, d, DZERO, double, gforth, double, gforth)
1169 :			dcomparisons(du, ud1 ud2, d_u_, ud1, ud2, gforth, gforth, double-ext, gforth)
1170 :
1171 :	pazsan	1.15	\+
1172 :	anton	1.1
1173 :	anton	1.47	within ( u1 u2 u3 -- f ) core-ext
1174 :	anton	1.32	""u2=<u1<u3 or: u3=<u2 and u1 is not in [u3,u2). This works for
1175 :			unsigned and signed numbers (but not a mixture). Another way to think
1176 :			about this word is to consider the numbers as a circle (wrapping
1177 :			around from @code{max-u} to 0 for unsigned, and from @code{max-n} to
1178 :			min-n for signed numbers); now consider the range from u2 towards
1179 :			increasing numbers up to and excluding u3 (giving an empty range if
1180 :	anton	1.52	u2=u3); if u1 is in this range, @code{within} returns true.""
1181 :	anton	1.1	f = FLAG(u1-u2 < u3-u2);
1182 :			:
1183 :			over - >r - r> u< ;
1184 :
1185 :	pazsan	1.112	\g stack
1186 :
1187 :			useraddr ( #u -- a_addr ) new
1188 :			a_addr = (Cell *)(up+u);
1189 :
1190 :			up! ( a_addr -- ) gforth up_store
1191 :	pazsan	1.190	gforth_UP=up=(Address)a_addr;
1192 :	pazsan	1.112	:
1193 :			up ! ;
1194 :			Variable UP
1195 :
1196 :	anton	1.172	sp@ ( S:... -- a_addr ) gforth sp_fetch
1197 :			a_addr = sp;
1198 :	anton	1.1
1199 :	anton	1.172	sp! ( a_addr -- S:... ) gforth sp_store
1200 :	anton	1.1	sp = a_addr;
1201 :
1202 :	anton	1.47	rp@ ( -- a_addr ) gforth rp_fetch
1203 :	anton	1.1	a_addr = rp;
1204 :
1205 :	anton	1.47	rp! ( a_addr -- ) gforth rp_store
1206 :	anton	1.1	rp = a_addr;
1207 :
1208 :	pazsan	1.15	\+floating
1209 :	anton	1.1
1210 :	anton	1.172	fp@ ( f:... -- f_addr ) gforth fp_fetch
1211 :	anton	1.1	f_addr = fp;
1212 :
1213 :	anton	1.172	fp! ( f_addr -- f:... ) gforth fp_store
1214 :	anton	1.1	fp = f_addr;
1215 :
1216 :	pazsan	1.15	\+
1217 :	anton	1.1
1218 :	anton	1.65	>r ( w -- R:w ) core to_r
1219 :	anton	1.1	:
1220 :			(>r) ;
1221 :			: (>r) rp@ cell+ @ rp@ ! rp@ cell+ ! ;
1222 :
1223 :	anton	1.65	r> ( R:w -- w ) core r_from
1224 :	anton	1.1	:
1225 :			rp@ cell+ @ rp@ @ rp@ cell+ ! (rdrop) rp@ ! ;
1226 :			Create (rdrop) ' ;s A,
1227 :
1228 :	anton	1.65	rdrop ( R:w -- ) gforth
1229 :	anton	1.1	:
1230 :			r> r> drop >r ;
1231 :
1232 :	pazsan	1.136	2>r ( d -- R:d ) core-ext two_to_r
1233 :	anton	1.1	:
1234 :			swap r> swap >r swap >r >r ;
1235 :
1236 :	pazsan	1.136	2r> ( R:d -- d ) core-ext two_r_from
1237 :	anton	1.1	:
1238 :			r> r> swap r> swap >r swap ;
1239 :
1240 :	pazsan	1.136	2r@ ( R:d -- R:d d ) core-ext two_r_fetch
1241 :	anton	1.1	:
1242 :			i' j ;
1243 :
1244 :	pazsan	1.136	2rdrop ( R:d -- ) gforth two_r_drop
1245 :	anton	1.1	:
1246 :			r> r> drop r> drop >r ;
1247 :
1248 :	anton	1.47	over ( w1 w2 -- w1 w2 w1 ) core
1249 :	anton	1.1	:
1250 :			sp@ cell+ @ ;
1251 :
1252 :	anton	1.47	drop ( w -- ) core
1253 :	anton	1.1	:
1254 :			IF THEN ;
1255 :
1256 :	anton	1.47	swap ( w1 w2 -- w2 w1 ) core
1257 :	anton	1.1	:
1258 :			>r (swap) ! r> (swap) @ ;
1259 :			Variable (swap)
1260 :
1261 :	anton	1.47	dup ( w -- w w ) core dupe
1262 :	anton	1.1	:
1263 :			sp@ @ ;
1264 :
1265 :	anton	1.47	rot ( w1 w2 w3 -- w2 w3 w1 ) core rote
1266 :	anton	1.1	:
1267 :			[ defined? (swap) [IF] ]
1268 :			(swap) ! (rot) ! >r (rot) @ (swap) @ r> ;
1269 :			Variable (rot)
1270 :			[ELSE] ]
1271 :			>r swap r> swap ;
1272 :			[THEN]
1273 :
1274 :	anton	1.47	-rot ( w1 w2 w3 -- w3 w1 w2 ) gforth not_rote
1275 :	anton	1.1	:
1276 :			rot rot ;
1277 :
1278 :	anton	1.47	nip ( w1 w2 -- w2 ) core-ext
1279 :	anton	1.1	:
1280 :	jwilke	1.6	swap drop ;
1281 :	anton	1.1
1282 :	anton	1.47	tuck ( w1 w2 -- w2 w1 w2 ) core-ext
1283 :	anton	1.1	:
1284 :			swap over ;
1285 :
1286 :	anton	1.172	?dup ( w -- S:... w ) core question_dupe
1287 :	anton	1.52	""Actually the stack effect is: @code{( w -- 0 \| w w )}. It performs a
1288 :			@code{dup} if w is nonzero.""
1289 :	anton	1.1	if (w!=0) {
1290 :			*--sp = w;
1291 :			}
1292 :			:
1293 :			dup IF dup THEN ;
1294 :
1295 :	anton	1.172	pick ( S:... u -- S:... w ) core-ext
1296 :	anton	1.52	""Actually the stack effect is @code{ x0 ... xu u -- x0 ... xu x0 }.""
1297 :	anton	1.172	w = sp[u];
1298 :	anton	1.1	:
1299 :			1+ cells sp@ + @ ;
1300 :
1301 :	anton	1.47	2drop ( w1 w2 -- ) core two_drop
1302 :	anton	1.1	:
1303 :			drop drop ;
1304 :
1305 :	anton	1.47	2dup ( w1 w2 -- w1 w2 w1 w2 ) core two_dupe
1306 :	anton	1.1	:
1307 :			over over ;
1308 :
1309 :	anton	1.47	2over ( w1 w2 w3 w4 -- w1 w2 w3 w4 w1 w2 ) core two_over
1310 :	anton	1.1	:
1311 :			3 pick 3 pick ;
1312 :
1313 :	anton	1.47	2swap ( w1 w2 w3 w4 -- w3 w4 w1 w2 ) core two_swap
1314 :	anton	1.1	:
1315 :			rot >r rot r> ;
1316 :
1317 :	anton	1.47	2rot ( w1 w2 w3 w4 w5 w6 -- w3 w4 w5 w6 w1 w2 ) double-ext two_rote
1318 :	anton	1.1	:
1319 :			>r >r 2swap r> r> 2swap ;
1320 :
1321 :	anton	1.47	2nip ( w1 w2 w3 w4 -- w3 w4 ) gforth two_nip
1322 :	anton	1.1	:
1323 :			2swap 2drop ;
1324 :
1325 :	anton	1.47	2tuck ( w1 w2 w3 w4 -- w3 w4 w1 w2 w3 w4 ) gforth two_tuck
1326 :	anton	1.1	:
1327 :			2swap 2over ;
1328 :
1329 :			\ toggle is high-level: 0.11/0.42%
1330 :
1331 :	pazsan	1.110	\g memory
1332 :
1333 :	anton	1.47	@ ( a_addr -- w ) core fetch
1334 :	anton	1.52	""@i{w} is the cell stored at @i{a_addr}.""
1335 :	anton	1.1	w = *a_addr;
1336 :
1337 :	pazsan	1.112	\ lit@ / lit_fetch = lit @
1338 :
1339 :			lit@ ( #a_addr -- w ) new lit_fetch
1340 :			w = *a_addr;
1341 :
1342 :	anton	1.47	! ( w a_addr -- ) core store
1343 :	anton	1.52	""Store @i{w} into the cell at @i{a-addr}.""
1344 :	anton	1.1	*a_addr = w;
1345 :
1346 :	anton	1.47	+! ( n a_addr -- ) core plus_store
1347 :	anton	1.52	""Add @i{n} to the cell at @i{a-addr}.""
1348 :	anton	1.1	*a_addr += n;
1349 :			:
1350 :			tuck @ + swap ! ;
1351 :
1352 :	anton	1.47	c@ ( c_addr -- c ) core c_fetch
1353 :	anton	1.52	""@i{c} is the char stored at @i{c_addr}.""
1354 :	anton	1.1	c = *c_addr;
1355 :			:
1356 :			[ bigendian [IF] ]
1357 :			[ cell>bit 4 = [IF] ]
1358 :			dup [ 0 cell - ] Literal and @ swap 1 and
1359 :			IF $FF and ELSE 8>> THEN ;
1360 :			[ [ELSE] ]
1361 :			dup [ cell 1- ] literal and
1362 :			tuck - @ swap [ cell 1- ] literal xor
1363 :			0 ?DO 8>> LOOP $FF and
1364 :			[ [THEN] ]
1365 :			[ [ELSE] ]
1366 :			[ cell>bit 4 = [IF] ]
1367 :			dup [ 0 cell - ] Literal and @ swap 1 and
1368 :			IF 8>> ELSE $FF and THEN
1369 :			[ [ELSE] ]
1370 :			dup [ cell 1- ] literal and
1371 :			tuck - @ swap
1372 :			0 ?DO 8>> LOOP 255 and
1373 :			[ [THEN] ]
1374 :			[ [THEN] ]
1375 :			;
1376 :			: 8>> 2/ 2/ 2/ 2/ 2/ 2/ 2/ 2/ ;
1377 :
1378 :	anton	1.47	c! ( c c_addr -- ) core c_store
1379 :	anton	1.52	""Store @i{c} into the char at @i{c-addr}.""
1380 :	anton	1.1	*c_addr = c;
1381 :			:
1382 :			[ bigendian [IF] ]
1383 :			[ cell>bit 4 = [IF] ]
1384 :			tuck 1 and IF $FF and ELSE 8<< THEN >r
1385 :			dup -2 and @ over 1 and cells masks + @ and
1386 :			r> or swap -2 and ! ;
1387 :			Create masks $00FF , $FF00 ,
1388 :			[ELSE] ]
1389 :			dup [ cell 1- ] literal and dup
1390 :			[ cell 1- ] literal xor >r
1391 :			- dup @ $FF r@ 0 ?DO 8<< LOOP invert and
1392 :			rot $FF and r> 0 ?DO 8<< LOOP or swap ! ;
1393 :			[THEN]
1394 :			[ELSE] ]
1395 :			[ cell>bit 4 = [IF] ]
1396 :			tuck 1 and IF 8<< ELSE $FF and THEN >r
1397 :			dup -2 and @ over 1 and cells masks + @ and
1398 :			r> or swap -2 and ! ;
1399 :			Create masks $FF00 , $00FF ,
1400 :			[ELSE] ]
1401 :			dup [ cell 1- ] literal and dup >r
1402 :			- dup @ $FF r@ 0 ?DO 8<< LOOP invert and
1403 :			rot $FF and r> 0 ?DO 8<< LOOP or swap ! ;
1404 :			[THEN]
1405 :			[THEN]
1406 :			: 8<< 2* 2* 2* 2* 2* 2* 2* 2* ;
1407 :
1408 :	anton	1.47	2! ( w1 w2 a_addr -- ) core two_store
1409 :	anton	1.52	""Store @i{w2} into the cell at @i{c-addr} and @i{w1} into the next cell.""
1410 :	anton	1.1	a_addr[0] = w2;
1411 :			a_addr[1] = w1;
1412 :			:
1413 :			tuck ! cell+ ! ;
1414 :
1415 :	anton	1.47	2@ ( a_addr -- w1 w2 ) core two_fetch
1416 :	anton	1.52	""@i{w2} is the content of the cell stored at @i{a-addr}, @i{w1} is
1417 :			the content of the next cell.""
1418 :	anton	1.1	w2 = a_addr[0];
1419 :			w1 = a_addr[1];
1420 :			:
1421 :			dup cell+ @ swap @ ;
1422 :
1423 :	anton	1.47	cell+ ( a_addr1 -- a_addr2 ) core cell_plus
1424 :	anton	1.52	""@code{1 cells +}""
1425 :	anton	1.1	a_addr2 = a_addr1+1;
1426 :			:
1427 :			cell + ;
1428 :
1429 :	anton	1.47	cells ( n1 -- n2 ) core
1430 :	anton	1.52	"" @i{n2} is the number of address units of @i{n1} cells.""
1431 :	anton	1.1	n2 = n1 * sizeof(Cell);
1432 :			:
1433 :			[ cell
1434 :			2/ dup [IF] ] 2* [ [THEN]
1435 :			2/ dup [IF] ] 2* [ [THEN]
1436 :			2/ dup [IF] ] 2* [ [THEN]
1437 :			2/ dup [IF] ] 2* [ [THEN]
1438 :			drop ] ;
1439 :
1440 :	anton	1.47	char+ ( c_addr1 -- c_addr2 ) core char_plus
1441 :	anton	1.52	""@code{1 chars +}.""
1442 :	anton	1.1	c_addr2 = c_addr1 + 1;
1443 :			:
1444 :			1+ ;
1445 :
1446 :	anton	1.47	(chars) ( n1 -- n2 ) gforth paren_chars
1447 :	anton	1.1	n2 = n1 * sizeof(Char);
1448 :			:
1449 :			;
1450 :
1451 :	anton	1.47	count ( c_addr1 -- c_addr2 u ) core
1452 :	anton	1.56	""@i{c-addr2} is the first character and @i{u} the length of the
1453 :			counted string at @i{c-addr1}.""
1454 :	anton	1.1	u = *c_addr1;
1455 :			c_addr2 = c_addr1+1;
1456 :			:
1457 :			dup 1+ swap c@ ;
1458 :
1459 :	pazsan	1.110	\g compiler
1460 :
1461 :	pazsan	1.138	\+f83headerstring
1462 :
1463 :			(f83find) ( c_addr u f83name1 -- f83name2 ) new paren_f83find
1464 :			for (; f83name1 != NULL; f83name1 = (struct F83Name *)(f83name1->next))
1465 :			if ((UCell)F83NAME_COUNT(f83name1)==u &&
1466 :			memcasecmp(c_addr, f83name1->name, u)== 0 /* or inline? */)
1467 :			break;
1468 :			f83name2=f83name1;
1469 :	pazsan	1.210	#ifdef DEBUG
1470 :			fprintf(stderr, "F83find ");
1471 :			fwrite(c_addr, u, 1, stderr);
1472 :			fprintf(stderr, " found %08x\n", f83name2);
1473 :			#endif
1474 :	pazsan	1.138	:
1475 :			BEGIN dup WHILE (find-samelen) dup WHILE
1476 :			>r 2dup r@ cell+ char+ capscomp 0=
1477 :			IF 2drop r> EXIT THEN
1478 :			r> @
1479 :			REPEAT THEN nip nip ;
1480 :			: (find-samelen) ( u f83name1 -- u f83name2/0 )
1481 :			BEGIN 2dup cell+ c@ $1F and <> WHILE @ dup 0= UNTIL THEN ;
1482 :			: capscomp ( c_addr1 u c_addr2 -- n )
1483 :			swap bounds
1484 :			?DO dup c@ I c@ <>
1485 :			IF dup c@ toupper I c@ toupper =
1486 :			ELSE true THEN WHILE 1+ LOOP drop 0
1487 :			ELSE c@ toupper I c@ toupper - unloop THEN sgn ;
1488 :			: sgn ( n -- -1/0/1 )
1489 :			dup 0= IF EXIT THEN 0< 2* 1+ ;
1490 :
1491 :			\-
1492 :
1493 :	pazsan	1.112	(listlfind) ( c_addr u longname1 -- longname2 ) new paren_listlfind
1494 :	anton	1.125	longname2=listlfind(c_addr, u, longname1);
1495 :	anton	1.1	:
1496 :	pazsan	1.112	BEGIN dup WHILE (findl-samelen) dup WHILE
1497 :			>r 2dup r@ cell+ cell+ capscomp 0=
1498 :	anton	1.1	IF 2drop r> EXIT THEN
1499 :			r> @
1500 :			REPEAT THEN nip nip ;
1501 :	pazsan	1.112	: (findl-samelen) ( u longname1 -- u longname2/0 )
1502 :			BEGIN 2dup cell+ @ lcount-mask and <> WHILE @ dup 0= UNTIL THEN ;
1503 :	pazsan	1.144	: capscomp ( c_addr1 u c_addr2 -- n )
1504 :			swap bounds
1505 :			?DO dup c@ I c@ <>
1506 :			IF dup c@ toupper I c@ toupper =
1507 :			ELSE true THEN WHILE 1+ LOOP drop 0
1508 :			ELSE c@ toupper I c@ toupper - unloop THEN sgn ;
1509 :			: sgn ( n -- -1/0/1 )
1510 :			dup 0= IF EXIT THEN 0< 2* 1+ ;
1511 :	anton	1.1
1512 :	pazsan	1.15	\+hash
1513 :	anton	1.1
1514 :	pazsan	1.112	(hashlfind) ( c_addr u a_addr -- longname2 ) new paren_hashlfind
1515 :	anton	1.125	longname2 = hashlfind(c_addr, u, a_addr);
1516 :	anton	1.1	:
1517 :			BEGIN dup WHILE
1518 :	pazsan	1.112	2@ >r >r dup r@ cell+ @ lcount-mask and =
1519 :			IF 2dup r@ cell+ cell+ capscomp 0=
1520 :	anton	1.1	IF 2drop r> rdrop EXIT THEN THEN
1521 :			rdrop r>
1522 :			REPEAT nip nip ;
1523 :
1524 :	pazsan	1.112	(tablelfind) ( c_addr u a_addr -- longname2 ) new paren_tablelfind
1525 :	anton	1.1	""A case-sensitive variant of @code{(hashfind)}""
1526 :	anton	1.125	longname2 = tablelfind(c_addr, u, a_addr);
1527 :	anton	1.1	:
1528 :			BEGIN dup WHILE
1529 :	pazsan	1.112	2@ >r >r dup r@ cell+ @ lcount-mask and =
1530 :			IF 2dup r@ cell+ cell+ -text 0=
1531 :	anton	1.1	IF 2drop r> rdrop EXIT THEN THEN
1532 :			rdrop r>
1533 :			REPEAT nip nip ;
1534 :	pazsan	1.138	: -text ( c_addr1 u c_addr2 -- n )
1535 :			swap bounds
1536 :			?DO dup c@ I c@ = WHILE 1+ LOOP drop 0
1537 :			ELSE c@ I c@ - unloop THEN sgn ;
1538 :			: sgn ( n -- -1/0/1 )
1539 :			dup 0= IF EXIT THEN 0< 2* 1+ ;
1540 :	anton	1.1
1541 :	anton	1.47	(hashkey1) ( c_addr u ubits -- ukey ) gforth paren_hashkey1
1542 :	anton	1.1	""ukey is the hash key for the string c_addr u fitting in ubits bits""
1543 :	anton	1.125	ukey = hashkey1(c_addr, u, ubits);
1544 :	anton	1.1	:
1545 :			dup rot-values + c@ over 1 swap lshift 1- >r
1546 :			tuck - 2swap r> 0 2swap bounds
1547 :			?DO dup 4 pick lshift swap 3 pick rshift or
1548 :			I c@ toupper xor
1549 :			over and LOOP
1550 :			nip nip nip ;
1551 :			Create rot-values
1552 :			5 c, 0 c, 1 c, 2 c, 3 c, 4 c, 5 c, 5 c, 5 c, 5 c,
1553 :			3 c, 5 c, 5 c, 5 c, 5 c, 7 c, 5 c, 5 c, 5 c, 5 c,
1554 :			7 c, 5 c, 5 c, 5 c, 5 c, 6 c, 5 c, 5 c, 5 c, 5 c,
1555 :			7 c, 5 c, 5 c,
1556 :	pazsan	1.138
1557 :			\+
1558 :	anton	1.1
1559 :	pazsan	1.15	\+
1560 :	anton	1.1
1561 :	anton	1.47	(parse-white) ( c_addr1 u1 -- c_addr2 u2 ) gforth paren_parse_white
1562 :	anton	1.125	struct Cellpair r=parse_white(c_addr1, u1);
1563 :			c_addr2 = (Char *)(r.n1);
1564 :			u2 = r.n2;
1565 :	anton	1.1	:
1566 :			BEGIN dup WHILE over c@ bl <= WHILE 1 /string
1567 :			REPEAT THEN 2dup
1568 :			BEGIN dup WHILE over c@ bl > WHILE 1 /string
1569 :			REPEAT THEN nip - ;
1570 :
1571 :	anton	1.47	aligned ( c_addr -- a_addr ) core
1572 :	crook	1.29	"" @i{a-addr} is the first aligned address greater than or equal to @i{c-addr}.""
1573 :	anton	1.1	a_addr = (Cell *)((((Cell)c_addr)+(sizeof(Cell)-1))&(-sizeof(Cell)));
1574 :			:
1575 :			[ cell 1- ] Literal + [ -1 cells ] Literal and ;
1576 :
1577 :	anton	1.47	faligned ( c_addr -- f_addr ) float f_aligned
1578 :	crook	1.29	"" @i{f-addr} is the first float-aligned address greater than or equal to @i{c-addr}.""
1579 :	anton	1.1	f_addr = (Float *)((((Cell)c_addr)+(sizeof(Float)-1))&(-sizeof(Float)));
1580 :			:
1581 :			[ 1 floats 1- ] Literal + [ -1 floats ] Literal and ;
1582 :
1583 :	jwilke	1.35	\ threading stuff is currently only interesting if we have a compiler
1584 :			\fhas? standardthreading has? compiler and [IF]
1585 :	anton	1.47	threading-method ( -- n ) gforth threading_method
1586 :	anton	1.1	""0 if the engine is direct threaded. Note that this may change during
1587 :			the lifetime of an image.""
1588 :			#if defined(DOUBLY_INDIRECT)
1589 :			n=2;
1590 :			#else
1591 :			# if defined(DIRECT_THREADED)
1592 :			n=0;
1593 :			# else
1594 :			n=1;
1595 :			# endif
1596 :			#endif
1597 :			:
1598 :			1 ;
1599 :	jwilke	1.28
1600 :	jwilke	1.35	\f[THEN]
1601 :	anton	1.1
1602 :	pazsan	1.83	\g hostos
1603 :
1604 :	anton	1.192	key-file ( wfileid -- c ) gforth paren_key_file
1605 :	anton	1.193	""Read one character @i{c} from @i{wfileid}. This word disables
1606 :			buffering for @i{wfileid}. If you want to read characters from a
1607 :			terminal in non-canonical (raw) mode, you have to put the terminal in
1608 :			non-canonical mode yourself (using the C interface); the exception is
1609 :			@code{stdin}: Gforth automatically puts it into non-canonical mode.""
1610 :	pazsan	1.17	#ifdef HAS_FILE
1611 :	anton	1.1	fflush(stdout);
1612 :	anton	1.192	c = key((FILE*)wfileid);
1613 :	pazsan	1.17	#else
1614 :	anton	1.192	c = key(stdin);
1615 :	pazsan	1.17	#endif
1616 :	anton	1.1
1617 :	anton	1.192	key?-file ( wfileid -- f ) gforth key_q_file
1618 :			""@i{f} is true if at least one character can be read from @i{wfileid}
1619 :	anton	1.193	without blocking. If you also want to use @code{read-file} or
1620 :			@code{read-line} on the file, you have to call @code{key?-file} or
1621 :			@code{key-file} first (these two words disable buffering).""
1622 :	pazsan	1.17	#ifdef HAS_FILE
1623 :	anton	1.1	fflush(stdout);
1624 :	anton	1.192	f = key_query((FILE*)wfileid);
1625 :	pazsan	1.17	#else
1626 :	anton	1.192	f = key_query(stdin);
1627 :	pazsan	1.17	#endif
1628 :
1629 :	anton	1.47	stdin ( -- wfileid ) gforth
1630 :	anton	1.193	""The standard input file of the Gforth process.""
1631 :	pazsan	1.12	wfileid = (Cell)stdin;
1632 :	anton	1.1
1633 :	anton	1.47	stdout ( -- wfileid ) gforth
1634 :	anton	1.193	""The standard output file of the Gforth process.""
1635 :	anton	1.1	wfileid = (Cell)stdout;
1636 :
1637 :	anton	1.47	stderr ( -- wfileid ) gforth
1638 :	anton	1.193	""The standard error output file of the Gforth process.""
1639 :	anton	1.1	wfileid = (Cell)stderr;
1640 :
1641 :	pazsan	1.208	\+os
1642 :
1643 :	anton	1.47	form ( -- urows ucols ) gforth
1644 :	anton	1.209	""The number of lines and columns in the terminal. These numbers may
1645 :			change with the window size. Note that it depends on the OS whether
1646 :			this reflects the actual size and changes with the window size
1647 :			(currently only on Unix-like OSs). On other OSs you just get a
1648 :			default, and can tell Gforth the terminal size by setting the
1649 :			environment variables @code{COLUMNS} and @code{LINES} before starting
1650 :			Gforth.""
1651 :	anton	1.1	/* we could block SIGWINCH here to get a consistent size, but I don't
1652 :			think this is necessary or always beneficial */
1653 :			urows=rows;
1654 :			ucols=cols;
1655 :
1656 :	pazsan	1.189	wcwidth ( u -- n ) gforth
1657 :			""The number of fixed-width characters per unicode character u""
1658 :			n = wcwidth(u);
1659 :
1660 :	anton	1.47	flush-icache ( c_addr u -- ) gforth flush_icache
1661 :	anton	1.1	""Make sure that the instruction cache of the processor (if there is
1662 :	crook	1.29	one) does not contain stale data at @i{c-addr} and @i{u} bytes
1663 :	anton	1.1	afterwards. @code{END-CODE} performs a @code{flush-icache}
1664 :			automatically. Caveat: @code{flush-icache} might not work on your
1665 :			installation; this is usually the case if direct threading is not
1666 :			supported on your machine (take a look at your @file{machine.h}) and
1667 :			your machine has a separate instruction cache. In such cases,
1668 :			@code{flush-icache} does nothing instead of flushing the instruction
1669 :			cache.""
1670 :			FLUSH_ICACHE(c_addr,u);
1671 :
1672 :	anton	1.47	(bye) ( n -- ) gforth paren_bye
1673 :	anton	1.77	SUPER_END;
1674 :	anton	1.1	return (Label *)n;
1675 :
1676 :	anton	1.125	(system) ( c_addr u -- wretval wior ) gforth paren_system
1677 :	anton	1.155	wretval = gforth_system(c_addr, u);
1678 :	anton	1.1	wior = IOR(wretval==-1 \|\| (wretval==127 && errno != 0));
1679 :
1680 :	anton	1.47	getenv ( c_addr1 u1 -- c_addr2 u2 ) gforth
1681 :	crook	1.29	""The string @i{c-addr1 u1} specifies an environment variable. The string @i{c-addr2 u2}
1682 :	crook	1.24	is the host operating system's expansion of that environment variable. If the
1683 :	crook	1.29	environment variable does not exist, @i{c-addr2 u2} specifies a string 0 characters
1684 :	crook	1.24	in length.""
1685 :	pazsan	1.46	/* close ' to keep fontify happy */
1686 :	pazsan	1.190	c_addr2 = (Char *)getenv(cstr(c_addr1,u1,1));
1687 :			u2 = (c_addr2 == NULL ? 0 : strlen((char *)c_addr2));
1688 :	anton	1.1
1689 :	anton	1.56	open-pipe ( c_addr u wfam -- wfileid wior ) gforth open_pipe
1690 :	pazsan	1.84	wfileid=(Cell)popen(cstr(c_addr,u,1),pfileattr[wfam]); /* ~ expansion of 1st arg? */
1691 :	anton	1.1	wior = IOR(wfileid==0); /* !! the man page says that errno is not set reliably */
1692 :
1693 :	anton	1.47	close-pipe ( wfileid -- wretval wior ) gforth close_pipe
1694 :	anton	1.1	wretval = pclose((FILE *)wfileid);
1695 :			wior = IOR(wretval==-1);
1696 :
1697 :	anton	1.47	time&date ( -- nsec nmin nhour nday nmonth nyear ) facility-ext time_and_date
1698 :	crook	1.44	""Report the current time of day. Seconds, minutes and hours are numbered from 0.
1699 :			Months are numbered from 1.""
1700 :	anton	1.127	#if 1
1701 :			time_t now;
1702 :			struct tm *ltime;
1703 :			time(&now);
1704 :			ltime=localtime(&now);
1705 :			#else
1706 :	anton	1.1	struct timeval time1;
1707 :			struct timezone zone1;
1708 :			struct tm *ltime;
1709 :			gettimeofday(&time1,&zone1);
1710 :	anton	1.51	/* !! Single Unix specification:
1711 :			If tzp is not a null pointer, the behaviour is unspecified. */
1712 :	anton	1.1	ltime=localtime((time_t *)&time1.tv_sec);
1713 :	anton	1.127	#endif
1714 :	anton	1.1	nyear =ltime->tm_year+1900;
1715 :			nmonth=ltime->tm_mon+1;
1716 :			nday =ltime->tm_mday;
1717 :			nhour =ltime->tm_hour;
1718 :			nmin =ltime->tm_min;
1719 :			nsec =ltime->tm_sec;
1720 :
1721 :	anton	1.212	ms ( u -- ) facility-ext
1722 :	crook	1.44	""Wait at least @i{n} milli-second.""
1723 :	anton	1.212	gforth_ms(u);
1724 :	anton	1.1
1725 :	anton	1.47	allocate ( u -- a_addr wior ) memory
1726 :	crook	1.29	""Allocate @i{u} address units of contiguous data space. The initial
1727 :	crook	1.27	contents of the data space is undefined. If the allocation is successful,
1728 :	crook	1.29	@i{a-addr} is the start address of the allocated region and @i{wior}
1729 :			is 0. If the allocation fails, @i{a-addr} is undefined and @i{wior}
1730 :	anton	1.52	is a non-zero I/O result code.""
1731 :	anton	1.1	a_addr = (Cell *)malloc(u?u:1);
1732 :			wior = IOR(a_addr==NULL);
1733 :
1734 :	anton	1.47	free ( a_addr -- wior ) memory
1735 :	crook	1.29	""Return the region of data space starting at @i{a-addr} to the system.
1736 :	anton	1.52	The region must originally have been obtained using @code{allocate} or
1737 :	crook	1.29	@code{resize}. If the operational is successful, @i{wior} is 0.
1738 :	anton	1.52	If the operation fails, @i{wior} is a non-zero I/O result code.""
1739 :	anton	1.1	free(a_addr);
1740 :			wior = 0;
1741 :
1742 :	anton	1.47	resize ( a_addr1 u -- a_addr2 wior ) memory
1743 :	crook	1.26	""Change the size of the allocated area at @i{a-addr1} to @i{u}
1744 :	anton	1.1	address units, possibly moving the contents to a different
1745 :	crook	1.27	area. @i{a-addr2} is the address of the resulting area.
1746 :	anton	1.52	If the operation is successful, @i{wior} is 0.
1747 :			If the operation fails, @i{wior} is a non-zero
1748 :	crook	1.29	I/O result code. If @i{a-addr1} is 0, Gforth's (but not the Standard)
1749 :	crook	1.27	@code{resize} @code{allocate}s @i{u} address units.""
1750 :	anton	1.1	/* the following check is not necessary on most OSs, but it is needed
1751 :			on SunOS 4.1.2. */
1752 :	pazsan	1.46	/* close ' to keep fontify happy */
1753 :	anton	1.1	if (a_addr1==NULL)
1754 :			a_addr2 = (Cell *)malloc(u);
1755 :			else
1756 :			a_addr2 = (Cell *)realloc(a_addr1, u);
1757 :			wior = IOR(a_addr2==NULL); /* !! Define a return code */
1758 :
1759 :	anton	1.47	strerror ( n -- c_addr u ) gforth
1760 :	pazsan	1.190	c_addr = (Char *)strerror(n);
1761 :			u = strlen((char *)c_addr);
1762 :	anton	1.1
1763 :	anton	1.47	strsignal ( n -- c_addr u ) gforth
1764 :	pazsan	1.190	c_addr = (Char *)strsignal(n);
1765 :			u = strlen((char *)c_addr);
1766 :	anton	1.1
1767 :	anton	1.172	call-c ( ... w -- ... ) gforth call_c
1768 :	anton	1.1	""Call the C function pointed to by @i{w}. The C function has to
1769 :			access the stack itself. The stack pointers are exported in the global
1770 :	anton	1.213	variables @code{gforth_SP} and @code{gforth_FP}.""
1771 :	anton	1.1	/* This is a first attempt at support for calls to C. This may change in
1772 :			the future */
1773 :	pazsan	1.185	gforth_FP=fp;
1774 :			gforth_SP=sp;
1775 :	anton	1.1	((void (*)())w)();
1776 :	pazsan	1.185	sp=gforth_SP;
1777 :			fp=gforth_FP;
1778 :	anton	1.1
1779 :	pazsan	1.15	\+
1780 :			\+file
1781 :	anton	1.1
1782 :	anton	1.47	close-file ( wfileid -- wior ) file close_file
1783 :	anton	1.1	wior = IOR(fclose((FILE *)wfileid)==EOF);
1784 :
1785 :	anton	1.56	open-file ( c_addr u wfam -- wfileid wior ) file open_file
1786 :			wfileid = (Cell)fopen(tilde_cstr(c_addr, u, 1), fileattr[wfam]);
1787 :	crook	1.22	wior = IOR(wfileid == 0);
1788 :	anton	1.1
1789 :	anton	1.56	create-file ( c_addr u wfam -- wfileid wior ) file create_file
1790 :	anton	1.1	Cell fd;
1791 :	anton	1.56	fd = open(tilde_cstr(c_addr, u, 1), O_CREAT\|O_TRUNC\|ufileattr[wfam], 0666);
1792 :	anton	1.1	if (fd != -1) {
1793 :	anton	1.56	wfileid = (Cell)fdopen(fd, fileattr[wfam]);
1794 :	crook	1.22	wior = IOR(wfileid == 0);
1795 :	anton	1.1	} else {
1796 :	crook	1.22	wfileid = 0;
1797 :	anton	1.1	wior = IOR(1);
1798 :			}
1799 :
1800 :	anton	1.47	delete-file ( c_addr u -- wior ) file delete_file
1801 :	anton	1.1	wior = IOR(unlink(tilde_cstr(c_addr, u, 1))==-1);
1802 :
1803 :	anton	1.47	rename-file ( c_addr1 u1 c_addr2 u2 -- wior ) file-ext rename_file
1804 :	crook	1.29	""Rename file @i{c_addr1 u1} to new name @i{c_addr2 u2}""
1805 :	anton	1.125	wior = rename_file(c_addr1, u1, c_addr2, u2);
1806 :	anton	1.1
1807 :	anton	1.47	file-position ( wfileid -- ud wior ) file file_position
1808 :	anton	1.1	/* !! use tell and lseek? */
1809 :	anton	1.108	ud = OFF2UD(ftello((FILE *)wfileid));
1810 :			wior = IOR(UD2OFF(ud)==-1);
1811 :	anton	1.1
1812 :	anton	1.47	reposition-file ( ud wfileid -- wior ) file reposition_file
1813 :	anton	1.108	wior = IOR(fseeko((FILE *)wfileid, UD2OFF(ud), SEEK_SET)==-1);
1814 :	anton	1.1
1815 :	anton	1.47	file-size ( wfileid -- ud wior ) file file_size
1816 :	anton	1.1	struct stat buf;
1817 :			wior = IOR(fstat(fileno((FILE *)wfileid), &buf)==-1);
1818 :	anton	1.108	ud = OFF2UD(buf.st_size);
1819 :	anton	1.1
1820 :	anton	1.47	resize-file ( ud wfileid -- wior ) file resize_file
1821 :	anton	1.108	wior = IOR(ftruncate(fileno((FILE *)wfileid), UD2OFF(ud))==-1);
1822 :	anton	1.1
1823 :	anton	1.47	read-file ( c_addr u1 wfileid -- u2 wior ) file read_file
1824 :	anton	1.1	/* !! fread does not guarantee enough */
1825 :			u2 = fread(c_addr, sizeof(Char), u1, (FILE *)wfileid);
1826 :			wior = FILEIO(u2<u1 && ferror((FILE *)wfileid));
1827 :			/* !! is the value of ferror errno-compatible? */
1828 :			if (wior)
1829 :			clearerr((FILE *)wfileid);
1830 :
1831 :	anton	1.125	(read-line) ( c_addr u1 wfileid -- u2 flag u3 wior ) file paren_read_line
1832 :			struct Cellquad r = read_line(c_addr, u1, wfileid);
1833 :			u2 = r.n1;
1834 :			flag = r.n2;
1835 :			u3 = r.n3;
1836 :			wior = r.n4;
1837 :	anton	1.1
1838 :	pazsan	1.15	\+
1839 :	anton	1.1
1840 :	anton	1.47	write-file ( c_addr u1 wfileid -- wior ) file write_file
1841 :	anton	1.1	/* !! fwrite does not guarantee enough */
1842 :	pazsan	1.39	#ifdef HAS_FILE
1843 :	anton	1.1	{
1844 :			UCell u2 = fwrite(c_addr, sizeof(Char), u1, (FILE *)wfileid);
1845 :			wior = FILEIO(u2<u1 && ferror((FILE *)wfileid));
1846 :			if (wior)
1847 :			clearerr((FILE *)wfileid);
1848 :			}
1849 :	pazsan	1.39	#else
1850 :			TYPE(c_addr, u1);
1851 :			#endif
1852 :	pazsan	1.17
1853 :	anton	1.47	emit-file ( c wfileid -- wior ) gforth emit_file
1854 :	pazsan	1.17	#ifdef HAS_FILE
1855 :	anton	1.1	wior = FILEIO(putc(c, (FILE *)wfileid)==EOF);
1856 :			if (wior)
1857 :			clearerr((FILE *)wfileid);
1858 :	pazsan	1.17	#else
1859 :	pazsan	1.36	PUTC(c);
1860 :	pazsan	1.17	#endif
1861 :	anton	1.1
1862 :	pazsan	1.15	\+file
1863 :	anton	1.1
1864 :	anton	1.47	flush-file ( wfileid -- wior ) file-ext flush_file
1865 :	anton	1.1	wior = IOR(fflush((FILE *) wfileid)==EOF);
1866 :
1867 :	anton	1.56	file-status ( c_addr u -- wfam wior ) file-ext file_status
1868 :	anton	1.125	struct Cellpair r = file_status(c_addr, u);
1869 :			wfam = r.n1;
1870 :			wior = r.n2;
1871 :	anton	1.1
1872 :	pazsan	1.112	file-eof? ( wfileid -- flag ) gforth file_eof_query
1873 :			flag = FLAG(feof((FILE *) wfileid));
1874 :	anton	1.1
1875 :	pazsan	1.112	open-dir ( c_addr u -- wdirid wior ) gforth open_dir
1876 :			""Open the directory specified by @i{c-addr, u}
1877 :			and return @i{dir-id} for futher access to it.""
1878 :			wdirid = (Cell)opendir(tilde_cstr(c_addr, u, 1));
1879 :			wior = IOR(wdirid == 0);
1880 :
1881 :			read-dir ( c_addr u1 wdirid -- u2 flag wior ) gforth read_dir
1882 :			""Attempt to read the next entry from the directory specified
1883 :			by @i{dir-id} to the buffer of length @i{u1} at address @i{c-addr}.
1884 :			If the attempt fails because there is no more entries,
1885 :			@i{ior}=0, @i{flag}=0, @i{u2}=0, and the buffer is unmodified.
1886 :			If the attempt to read the next entry fails because of any other reason,
1887 :			return @i{ior}<>0.
1888 :			If the attempt succeeds, store file name to the buffer at @i{c-addr}
1889 :			and return @i{ior}=0, @i{flag}=true and @i{u2} equal to the size of the file name.
1890 :			If the length of the file name is greater than @i{u1},
1891 :			store first @i{u1} characters from file name into the buffer and
1892 :			indicate "name too long" with @i{ior}, @i{flag}=true, and @i{u2}=@i{u1}.""
1893 :			struct dirent * dent;
1894 :			dent = readdir((DIR *)wdirid);
1895 :			wior = 0;
1896 :			flag = -1;
1897 :			if(dent == NULL) {
1898 :			u2 = 0;
1899 :			flag = 0;
1900 :			} else {
1901 :	pazsan	1.190	u2 = strlen((char *)dent->d_name);
1902 :	pazsan	1.112	if(u2 > u1) {
1903 :			u2 = u1;
1904 :			wior = -512-ENAMETOOLONG;
1905 :			}
1906 :			memmove(c_addr, dent->d_name, u2);
1907 :			}
1908 :
1909 :			close-dir ( wdirid -- wior ) gforth close_dir
1910 :			""Close the directory specified by @i{dir-id}.""
1911 :			wior = IOR(closedir((DIR *)wdirid));
1912 :
1913 :			filename-match ( c_addr1 u1 c_addr2 u2 -- flag ) gforth match_file
1914 :			char * string = cstr(c_addr1, u1, 1);
1915 :			char * pattern = cstr(c_addr2, u2, 0);
1916 :			flag = FLAG(!fnmatch(pattern, string, 0));
1917 :
1918 :	pazsan	1.157	set-dir ( c_addr u -- wior ) gforth set_dir
1919 :			""Change the current directory to @i{c-addr, u}.
1920 :			Return an error if this is not possible""
1921 :			wior = IOR(chdir(tilde_cstr(c_addr, u, 1)));
1922 :
1923 :			get-dir ( c_addr1 u1 -- c_addr2 u2 ) gforth get_dir
1924 :			""Store the current directory in the buffer specified by @{c-addr1, u1}.
1925 :			If the buffer size is not sufficient, return 0 0""
1926 :	pazsan	1.190	c_addr2 = (Char )getcwd((char )c_addr1, u1);
1927 :	pazsan	1.157	if(c_addr2 != NULL) {
1928 :	pazsan	1.190	u2 = strlen((char *)c_addr2);
1929 :	pazsan	1.157	} else {
1930 :			u2 = 0;
1931 :			}
1932 :
1933 :	pazsan	1.112	\+
1934 :
1935 :			newline ( -- c_addr u ) gforth
1936 :			""String containing the newline sequence of the host OS""
1937 :			char newline[] = {
1938 :	anton	1.115	#if DIRSEP=='/'
1939 :			/* Unix */
1940 :	pazsan	1.112	'\n'
1941 :			#else
1942 :	anton	1.115	/* DOS, Win, OS/2 */
1943 :	pazsan	1.112	'\r','\n'
1944 :			#endif
1945 :			};
1946 :	pazsan	1.190	c_addr=(Char *)newline;
1947 :	pazsan	1.112	u=sizeof(newline);
1948 :			:
1949 :			"newline count ;
1950 :			Create "newline e? crlf [IF] 2 c, $0D c, [ELSE] 1 c, [THEN] $0A c,
1951 :
1952 :			\+os
1953 :
1954 :			utime ( -- dtime ) gforth
1955 :			""Report the current time in microseconds since some epoch.""
1956 :			struct timeval time1;
1957 :			gettimeofday(&time1,NULL);
1958 :			dtime = timeval2us(&time1);
1959 :
1960 :			cputime ( -- duser dsystem ) gforth
1961 :			""duser and dsystem are the respective user- and system-level CPU
1962 :			times used since the start of the Forth system (excluding child
1963 :			processes), in microseconds (the granularity may be much larger,
1964 :			however). On platforms without the getrusage call, it reports elapsed
1965 :			time (since some epoch) for duser and 0 for dsystem.""
1966 :			#ifdef HAVE_GETRUSAGE
1967 :			struct rusage usage;
1968 :			getrusage(RUSAGE_SELF, &usage);
1969 :			duser = timeval2us(&usage.ru_utime);
1970 :			dsystem = timeval2us(&usage.ru_stime);
1971 :			#else
1972 :			struct timeval time1;
1973 :			gettimeofday(&time1,NULL);
1974 :			duser = timeval2us(&time1);
1975 :	pazsan	1.158	dsystem = DZERO;
1976 :	pazsan	1.112	#endif
1977 :
1978 :			\+
1979 :
1980 :			\+floating
1981 :
1982 :			\g floating
1983 :	pazsan	1.83
1984 :	anton	1.1	comparisons(f, r1 r2, f_, r1, r2, gforth, gforth, float, gforth)
1985 :			comparisons(f0, r, f_zero_, r, 0., float, gforth, float, gforth)
1986 :
1987 :	pazsan	1.177	s>f ( n -- r ) float s_to_f
1988 :			r = n;
1989 :
1990 :	anton	1.47	d>f ( d -- r ) float d_to_f
1991 :	pazsan	1.158	#ifdef BUGGY_LL_D2F
1992 :	anton	1.1	extern double ldexp(double x, int exp);
1993 :	pazsan	1.158	if (DHI(d)<0) {
1994 :			#ifdef BUGGY_LL_ADD
1995 :	anton	1.113	DCell d2=dnegate(d);
1996 :	pazsan	1.158	#else
1997 :			DCell d2=-d;
1998 :			#endif
1999 :			r = -(ldexp((Float)DHI(d2),CELL_BITS) + (Float)DLO(d2));
2000 :	anton	1.113	} else
2001 :	pazsan	1.158	r = ldexp((Float)DHI(d),CELL_BITS) + (Float)DLO(d);
2002 :	anton	1.1	#else
2003 :			r = d;
2004 :			#endif
2005 :
2006 :	anton	1.47	f>d ( r -- d ) float f_to_d
2007 :	pazsan	1.100	extern DCell double2ll(Float r);
2008 :			d = double2ll(r);
2009 :	anton	1.1
2010 :	pazsan	1.177	f>s ( r -- n ) float f_to_s
2011 :			n = (Cell)r;
2012 :
2013 :	anton	1.47	f! ( r f_addr -- ) float f_store
2014 :	anton	1.52	""Store @i{r} into the float at address @i{f-addr}.""
2015 :	anton	1.1	*f_addr = r;
2016 :
2017 :	anton	1.47	f@ ( f_addr -- r ) float f_fetch
2018 :	anton	1.52	""@i{r} is the float at address @i{f-addr}.""
2019 :	anton	1.1	r = *f_addr;
2020 :
2021 :	anton	1.47	df@ ( df_addr -- r ) float-ext d_f_fetch
2022 :	anton	1.52	""Fetch the double-precision IEEE floating-point value @i{r} from the address @i{df-addr}.""
2023 :	anton	1.1	#ifdef IEEE_FP
2024 :			r = *df_addr;
2025 :			#else
2026 :			!! df@
2027 :			#endif
2028 :
2029 :	anton	1.47	df! ( r df_addr -- ) float-ext d_f_store
2030 :	anton	1.52	""Store @i{r} as double-precision IEEE floating-point value to the
2031 :			address @i{df-addr}.""
2032 :	anton	1.1	#ifdef IEEE_FP
2033 :			*df_addr = r;
2034 :			#else
2035 :			!! df!
2036 :			#endif
2037 :
2038 :	anton	1.47	sf@ ( sf_addr -- r ) float-ext s_f_fetch
2039 :	anton	1.52	""Fetch the single-precision IEEE floating-point value @i{r} from the address @i{sf-addr}.""
2040 :	anton	1.1	#ifdef IEEE_FP
2041 :			r = *sf_addr;
2042 :			#else
2043 :			!! sf@
2044 :			#endif
2045 :
2046 :	anton	1.47	sf! ( r sf_addr -- ) float-ext s_f_store
2047 :	anton	1.52	""Store @i{r} as single-precision IEEE floating-point value to the
2048 :			address @i{sf-addr}.""
2049 :	anton	1.1	#ifdef IEEE_FP
2050 :			*sf_addr = r;
2051 :			#else
2052 :			!! sf!
2053 :			#endif
2054 :
2055 :	anton	1.47	f+ ( r1 r2 -- r3 ) float f_plus
2056 :	anton	1.1	r3 = r1+r2;
2057 :
2058 :	anton	1.47	f- ( r1 r2 -- r3 ) float f_minus
2059 :	anton	1.1	r3 = r1-r2;
2060 :
2061 :	anton	1.47	f* ( r1 r2 -- r3 ) float f_star
2062 :	anton	1.1	r3 = r1*r2;
2063 :
2064 :	anton	1.47	f/ ( r1 r2 -- r3 ) float f_slash
2065 :	anton	1.1	r3 = r1/r2;
2066 :
2067 :	anton	1.47	f** ( r1 r2 -- r3 ) float-ext f_star_star
2068 :	crook	1.26	""@i{r3} is @i{r1} raised to the @i{r2}th power.""
2069 :	anton	1.1	r3 = pow(r1,r2);
2070 :	pazsan	1.177
2071 :			fm* ( r1 n -- r2 ) gforth fm_star
2072 :			r2 = r1*n;
2073 :
2074 :			fm/ ( r1 n -- r2 ) gforth fm_slash
2075 :			r2 = r1/n;
2076 :
2077 :			fm*/ ( r1 n1 n2 -- r2 ) gforth fm_star_slash
2078 :			r2 = (r1*n1)/n2;
2079 :
2080 :			f**2 ( r1 -- r2 ) gforth fm_square
2081 :			r2 = r1*r1;
2082 :	anton	1.1
2083 :	anton	1.47	fnegate ( r1 -- r2 ) float f_negate
2084 :	anton	1.1	r2 = - r1;
2085 :
2086 :	anton	1.47	fdrop ( r -- ) float f_drop
2087 :	anton	1.1
2088 :	anton	1.47	fdup ( r -- r r ) float f_dupe
2089 :	anton	1.1
2090 :	anton	1.47	fswap ( r1 r2 -- r2 r1 ) float f_swap
2091 :	anton	1.1
2092 :	anton	1.47	fover ( r1 r2 -- r1 r2 r1 ) float f_over
2093 :	anton	1.1
2094 :	anton	1.47	frot ( r1 r2 r3 -- r2 r3 r1 ) float f_rote
2095 :	anton	1.1
2096 :	anton	1.47	fnip ( r1 r2 -- r2 ) gforth f_nip
2097 :	anton	1.1
2098 :	anton	1.47	ftuck ( r1 r2 -- r2 r1 r2 ) gforth f_tuck
2099 :	anton	1.1
2100 :	anton	1.47	float+ ( f_addr1 -- f_addr2 ) float float_plus
2101 :	anton	1.52	""@code{1 floats +}.""
2102 :	anton	1.1	f_addr2 = f_addr1+1;
2103 :
2104 :	anton	1.47	floats ( n1 -- n2 ) float
2105 :	anton	1.52	""@i{n2} is the number of address units of @i{n1} floats.""
2106 :	anton	1.1	n2 = n1*sizeof(Float);
2107 :
2108 :	anton	1.47	floor ( r1 -- r2 ) float
2109 :	crook	1.26	""Round towards the next smaller integral value, i.e., round toward negative infinity.""
2110 :	anton	1.1	/* !! unclear wording */
2111 :			r2 = floor(r1);
2112 :
2113 :	anton	1.105	fround ( r1 -- r2 ) gforth f_round
2114 :			""Round to the nearest integral value.""
2115 :	anton	1.1	r2 = rint(r1);
2116 :
2117 :	anton	1.47	fmax ( r1 r2 -- r3 ) float f_max
2118 :	anton	1.1	if (r1<r2)
2119 :			r3 = r2;
2120 :			else
2121 :			r3 = r1;
2122 :
2123 :	anton	1.47	fmin ( r1 r2 -- r3 ) float f_min
2124 :	anton	1.1	if (r1<r2)
2125 :			r3 = r1;
2126 :			else
2127 :			r3 = r2;
2128 :
2129 :	anton	1.47	represent ( r c_addr u -- n f1 f2 ) float
2130 :	anton	1.1	char *sig;
2131 :	anton	1.122	size_t siglen;
2132 :	anton	1.1	int flag;
2133 :			int decpt;
2134 :			sig=ecvt(r, u, &decpt, &flag);
2135 :	anton	1.122	n=(r==0. ? 1 : decpt);
2136 :	anton	1.1	f1=FLAG(flag!=0);
2137 :	anton	1.21	f2=FLAG(isdigit((unsigned)(sig[0]))!=0);
2138 :	pazsan	1.190	siglen=strlen((char *)sig);
2139 :	anton	1.124	if (siglen>u) /* happens in glibc-2.1.3 if 999.. is rounded up */
2140 :			siglen=u;
2141 :	anton	1.170	if (!f2) /* workaround Cygwin trailing 0s for Inf and Nan */
2142 :			for (; sig[siglen-1]=='0'; siglen--);
2143 :			;
2144 :	anton	1.122	memcpy(c_addr,sig,siglen);
2145 :	anton	1.123	memset(c_addr+siglen,f2?'0':' ',u-siglen);
2146 :	anton	1.1
2147 :	anton	1.172	>float ( c_addr u -- f:... flag ) float to_float
2148 :	anton	1.56	""Actual stack effect: ( c_addr u -- r t \| f ). Attempt to convert the
2149 :			character string @i{c-addr u} to internal floating-point
2150 :			representation. If the string represents a valid floating-point number
2151 :			@i{r} is placed on the floating-point stack and @i{flag} is
2152 :			true. Otherwise, @i{flag} is false. A string of blanks is a special
2153 :			case and represents the floating-point number 0.""
2154 :	anton	1.1	Float r;
2155 :	anton	1.125	flag = to_float(c_addr, u, &r);
2156 :			if (flag) {
2157 :	anton	1.172	fp--;
2158 :			fp[0]=r;
2159 :	anton	1.1	}
2160 :
2161 :	anton	1.47	fabs ( r1 -- r2 ) float-ext f_abs
2162 :	anton	1.1	r2 = fabs(r1);
2163 :
2164 :	anton	1.47	facos ( r1 -- r2 ) float-ext f_a_cos
2165 :	anton	1.1	r2 = acos(r1);
2166 :
2167 :	anton	1.47	fasin ( r1 -- r2 ) float-ext f_a_sine
2168 :	anton	1.1	r2 = asin(r1);
2169 :
2170 :	anton	1.47	fatan ( r1 -- r2 ) float-ext f_a_tan
2171 :	anton	1.1	r2 = atan(r1);
2172 :
2173 :	anton	1.47	fatan2 ( r1 r2 -- r3 ) float-ext f_a_tan_two
2174 :	crook	1.26	""@i{r1/r2}=tan(@i{r3}). ANS Forth does not require, but probably
2175 :	anton	1.1	intends this to be the inverse of @code{fsincos}. In gforth it is.""
2176 :			r3 = atan2(r1,r2);
2177 :
2178 :	anton	1.47	fcos ( r1 -- r2 ) float-ext f_cos
2179 :	anton	1.1	r2 = cos(r1);
2180 :
2181 :	anton	1.47	fexp ( r1 -- r2 ) float-ext f_e_x_p
2182 :	anton	1.1	r2 = exp(r1);
2183 :
2184 :	anton	1.47	fexpm1 ( r1 -- r2 ) float-ext f_e_x_p_m_one
2185 :	anton	1.1	""@i{r2}=@i{e}**@i{r1}@minus{}1""
2186 :			#ifdef HAVE_EXPM1
2187 :	pazsan	1.3	extern double
2188 :			#ifdef NeXT
2189 :			const
2190 :			#endif
2191 :			expm1(double);
2192 :	anton	1.1	r2 = expm1(r1);
2193 :			#else
2194 :			r2 = exp(r1)-1.;
2195 :			#endif
2196 :
2197 :	anton	1.47	fln ( r1 -- r2 ) float-ext f_l_n
2198 :	anton	1.1	r2 = log(r1);
2199 :
2200 :	anton	1.47	flnp1 ( r1 -- r2 ) float-ext f_l_n_p_one
2201 :	anton	1.1	""@i{r2}=ln(@i{r1}+1)""
2202 :			#ifdef HAVE_LOG1P
2203 :	pazsan	1.3	extern double
2204 :			#ifdef NeXT
2205 :			const
2206 :			#endif
2207 :			log1p(double);
2208 :	anton	1.1	r2 = log1p(r1);
2209 :			#else
2210 :			r2 = log(r1+1.);
2211 :			#endif
2212 :
2213 :	anton	1.47	flog ( r1 -- r2 ) float-ext f_log
2214 :	crook	1.26	""The decimal logarithm.""
2215 :	anton	1.1	r2 = log10(r1);
2216 :
2217 :	anton	1.47	falog ( r1 -- r2 ) float-ext f_a_log
2218 :	anton	1.1	""@i{r2}=10**@i{r1}""
2219 :			extern double pow10(double);
2220 :			r2 = pow10(r1);
2221 :
2222 :	anton	1.47	fsin ( r1 -- r2 ) float-ext f_sine
2223 :	anton	1.1	r2 = sin(r1);
2224 :
2225 :	anton	1.47	fsincos ( r1 -- r2 r3 ) float-ext f_sine_cos
2226 :	anton	1.1	""@i{r2}=sin(@i{r1}), @i{r3}=cos(@i{r1})""
2227 :			r2 = sin(r1);
2228 :			r3 = cos(r1);
2229 :
2230 :	anton	1.47	fsqrt ( r1 -- r2 ) float-ext f_square_root
2231 :	anton	1.1	r2 = sqrt(r1);
2232 :
2233 :	anton	1.47	ftan ( r1 -- r2 ) float-ext f_tan
2234 :	anton	1.1	r2 = tan(r1);
2235 :			:
2236 :			fsincos f/ ;
2237 :
2238 :	anton	1.47	fsinh ( r1 -- r2 ) float-ext f_cinch
2239 :	anton	1.1	r2 = sinh(r1);
2240 :			:
2241 :			fexpm1 fdup fdup 1. d>f f+ f/ f+ f2/ ;
2242 :
2243 :	anton	1.47	fcosh ( r1 -- r2 ) float-ext f_cosh
2244 :	anton	1.1	r2 = cosh(r1);
2245 :			:
2246 :			fexp fdup 1/f f+ f2/ ;
2247 :
2248 :	anton	1.47	ftanh ( r1 -- r2 ) float-ext f_tan_h
2249 :	anton	1.1	r2 = tanh(r1);
2250 :			:
2251 :			f2* fexpm1 fdup 2. d>f f+ f/ ;
2252 :
2253 :	anton	1.47	fasinh ( r1 -- r2 ) float-ext f_a_cinch
2254 :	anton	1.1	r2 = asinh(r1);
2255 :			:
2256 :			fdup fdup f* 1. d>f f+ fsqrt f/ fatanh ;
2257 :
2258 :	anton	1.47	facosh ( r1 -- r2 ) float-ext f_a_cosh
2259 :	anton	1.1	r2 = acosh(r1);
2260 :			:
2261 :			fdup fdup f* 1. d>f f- fsqrt f+ fln ;
2262 :
2263 :	anton	1.47	fatanh ( r1 -- r2 ) float-ext f_a_tan_h
2264 :	anton	1.1	r2 = atanh(r1);
2265 :			:
2266 :			fdup f0< >r fabs 1. d>f fover f- f/ f2* flnp1 f2/
2267 :			r> IF fnegate THEN ;
2268 :
2269 :	anton	1.47	sfloats ( n1 -- n2 ) float-ext s_floats
2270 :	anton	1.52	""@i{n2} is the number of address units of @i{n1}
2271 :	crook	1.29	single-precision IEEE floating-point numbers.""
2272 :	anton	1.1	n2 = n1*sizeof(SFloat);
2273 :
2274 :	anton	1.47	dfloats ( n1 -- n2 ) float-ext d_floats
2275 :	anton	1.52	""@i{n2} is the number of address units of @i{n1}
2276 :	crook	1.29	double-precision IEEE floating-point numbers.""
2277 :	anton	1.1	n2 = n1*sizeof(DFloat);
2278 :
2279 :	anton	1.47	sfaligned ( c_addr -- sf_addr ) float-ext s_f_aligned
2280 :	anton	1.52	""@i{sf-addr} is the first single-float-aligned address greater
2281 :	crook	1.29	than or equal to @i{c-addr}.""
2282 :	anton	1.1	sf_addr = (SFloat *)((((Cell)c_addr)+(sizeof(SFloat)-1))&(-sizeof(SFloat)));
2283 :			:
2284 :			[ 1 sfloats 1- ] Literal + [ -1 sfloats ] Literal and ;
2285 :
2286 :	anton	1.47	dfaligned ( c_addr -- df_addr ) float-ext d_f_aligned
2287 :	anton	1.52	""@i{df-addr} is the first double-float-aligned address greater
2288 :	crook	1.29	than or equal to @i{c-addr}.""
2289 :	anton	1.1	df_addr = (DFloat *)((((Cell)c_addr)+(sizeof(DFloat)-1))&(-sizeof(DFloat)));
2290 :			:
2291 :			[ 1 dfloats 1- ] Literal + [ -1 dfloats ] Literal and ;
2292 :
2293 :	pazsan	1.112	v* ( f_addr1 nstride1 f_addr2 nstride2 ucount -- r ) gforth v_star
2294 :			""dot-product: r=v1*v2. The first element of v1 is at f_addr1, the
2295 :			next at f_addr1+nstride1 and so on (similar for v2). Both vectors have
2296 :			ucount elements.""
2297 :	anton	1.125	r = v_star(f_addr1, nstride1, f_addr2, nstride2, ucount);
2298 :	pazsan	1.112	:
2299 :			>r swap 2swap swap 0e r> 0 ?DO
2300 :			dup f@ over + 2swap dup f@ f* f+ over + 2swap
2301 :			LOOP 2drop 2drop ;
2302 :
2303 :			faxpy ( ra f_x nstridex f_y nstridey ucount -- ) gforth
2304 :			""vy=ra*vx+vy""
2305 :	anton	1.125	faxpy(ra, f_x, nstridex, f_y, nstridey, ucount);
2306 :	pazsan	1.112	:
2307 :			>r swap 2swap swap r> 0 ?DO
2308 :			fdup dup f@ f* over + 2swap dup f@ f+ dup f! over + 2swap
2309 :			LOOP 2drop 2drop fdrop ;
2310 :
2311 :			\+
2312 :
2313 :	anton	1.1	\ The following words access machine/OS/installation-dependent
2314 :			\ Gforth internals
2315 :			\ !! how about environmental queries DIRECT-THREADED,
2316 :			\ INDIRECT-THREADED, TOS-CACHED, FTOS-CACHED, CODEFIELD-DOES */
2317 :
2318 :			\ local variable implementation primitives
2319 :	pazsan	1.112
2320 :	pazsan	1.15	\+glocals
2321 :	anton	1.1
2322 :	pazsan	1.110	\g locals
2323 :
2324 :	anton	1.68	@local# ( #noffset -- w ) gforth fetch_local_number
2325 :			w = (Cell )(lp+noffset);
2326 :	anton	1.1
2327 :	anton	1.47	@local0 ( -- w ) new fetch_local_zero
2328 :	pazsan	1.112	w = ((Cell *)lp)[0];
2329 :	anton	1.1
2330 :	anton	1.47	@local1 ( -- w ) new fetch_local_four
2331 :	pazsan	1.112	w = ((Cell *)lp)[1];
2332 :	anton	1.1
2333 :	anton	1.47	@local2 ( -- w ) new fetch_local_eight
2334 :	pazsan	1.112	w = ((Cell *)lp)[2];
2335 :	anton	1.1
2336 :	anton	1.47	@local3 ( -- w ) new fetch_local_twelve
2337 :	pazsan	1.112	w = ((Cell *)lp)[3];
2338 :	anton	1.1
2339 :	pazsan	1.15	\+floating
2340 :	anton	1.1
2341 :	anton	1.68	f@local# ( #noffset -- r ) gforth f_fetch_local_number
2342 :			r = (Float )(lp+noffset);
2343 :	anton	1.1
2344 :	anton	1.47	f@local0 ( -- r ) new f_fetch_local_zero
2345 :	pazsan	1.112	r = ((Float *)lp)[0];
2346 :	anton	1.1
2347 :	anton	1.47	f@local1 ( -- r ) new f_fetch_local_eight
2348 :	pazsan	1.112	r = ((Float *)lp)[1];
2349 :	anton	1.1
2350 :	pazsan	1.15	\+
2351 :	anton	1.1
2352 :	anton	1.68	laddr# ( #noffset -- c_addr ) gforth laddr_number
2353 :	anton	1.1	/* this can also be used to implement lp@ */
2354 :	anton	1.68	c_addr = (Char *)(lp+noffset);
2355 :	anton	1.1
2356 :	anton	1.68	lp+!# ( #noffset -- ) gforth lp_plus_store_number
2357 :	anton	1.1	""used with negative immediate values it allocates memory on the
2358 :			local stack, a positive immediate argument drops memory from the local
2359 :			stack""
2360 :	anton	1.68	lp += noffset;
2361 :	anton	1.1
2362 :	anton	1.47	lp- ( -- ) new minus_four_lp_plus_store
2363 :	anton	1.1	lp += -sizeof(Cell);
2364 :
2365 :	anton	1.47	lp+ ( -- ) new eight_lp_plus_store
2366 :	anton	1.1	lp += sizeof(Float);
2367 :
2368 :	anton	1.47	lp+2 ( -- ) new sixteen_lp_plus_store
2369 :	anton	1.1	lp += 2*sizeof(Float);
2370 :
2371 :	anton	1.47	lp! ( c_addr -- ) gforth lp_store
2372 :	anton	1.1	lp = (Address)c_addr;
2373 :
2374 :	anton	1.47	>l ( w -- ) gforth to_l
2375 :	anton	1.1	lp -= sizeof(Cell);
2376 :			(Cell )lp = w;
2377 :
2378 :	pazsan	1.15	\+floating
2379 :	anton	1.1
2380 :	anton	1.47	f>l ( r -- ) gforth f_to_l
2381 :	anton	1.1	lp -= sizeof(Float);
2382 :			(Float )lp = r;
2383 :
2384 :	anton	1.172	fpick ( f:... u -- f:... r ) gforth
2385 :	anton	1.52	""Actually the stack effect is @code{ r0 ... ru u -- r0 ... ru r0 }.""
2386 :	anton	1.172	r = fp[u];
2387 :	anton	1.11	:
2388 :			floats fp@ + f@ ;
2389 :
2390 :	pazsan	1.15	\+
2391 :			\+
2392 :	anton	1.1
2393 :	pazsan	1.15	\+OS
2394 :	anton	1.1
2395 :	pazsan	1.110	\g syslib
2396 :
2397 :	pazsan	1.131	open-lib ( c_addr1 u1 -- u2 ) gforth open_lib
2398 :			#if defined(HAVE_LIBDL) \|\| defined(HAVE_DLOPEN)
2399 :			#ifndef RTLD_GLOBAL
2400 :			#define RTLD_GLOBAL 0
2401 :			#endif
2402 :			u2=(UCell) dlopen(cstr(c_addr1, u1, 1), RTLD_GLOBAL \| RTLD_LAZY);
2403 :			#else
2404 :			# ifdef _WIN32
2405 :			u2 = (Cell) GetModuleHandle(cstr(c_addr1, u1, 1));
2406 :			# else
2407 :			#warning Define open-lib!
2408 :			u2 = 0;
2409 :			# endif
2410 :			#endif
2411 :
2412 :			lib-sym ( c_addr1 u1 u2 -- u3 ) gforth lib_sym
2413 :			#if defined(HAVE_LIBDL) \|\| defined(HAVE_DLOPEN)
2414 :			u3 = (UCell) dlsym((void*)u2,cstr(c_addr1, u1, 1));
2415 :			#else
2416 :			# ifdef _WIN32
2417 :			u3 = (Cell) GetProcAddress((HMODULE)u2, cstr(c_addr1, u1, 1));
2418 :			# else
2419 :			#warning Define lib-sym!
2420 :			u3 = 0;
2421 :			# endif
2422 :			#endif
2423 :
2424 :	anton	1.172	wcall ( ... u -- ... ) gforth
2425 :	pazsan	1.185	gforth_FP=fp;
2426 :			sp=(Cell)(SYSCALL(Cell()(Cell , void *))u)(sp, &gforth_FP);
2427 :			fp=gforth_FP;
2428 :	pazsan	1.142
2429 :	anton	1.186	uw@ ( c_addr -- u ) gforth u_w_fetch
2430 :			""@i{u} is the zero-extended 16-bit value stored at @i{c_addr}.""
2431 :			u = (UWyde)(c_addr);
2432 :	pazsan	1.180
2433 :	anton	1.186	sw@ ( c_addr -- n ) gforth s_w_fetch
2434 :			""@i{n} is the sign-extended 16-bit value stored at @i{c_addr}.""
2435 :			n = (Wyde)(c_addr);
2436 :	pazsan	1.180
2437 :	anton	1.186	w! ( w c_addr -- ) gforth w_store
2438 :			""Store the bottom 16 bits of @i{w} at @i{c_addr}.""
2439 :			(Wyde)(c_addr) = w;
2440 :	pazsan	1.180
2441 :	anton	1.186	ul@ ( c_addr -- u ) gforth u_l_fetch
2442 :			""@i{u} is the zero-extended 32-bit value stored at @i{c_addr}.""
2443 :			u = (UTetrabyte)(c_addr);
2444 :	pazsan	1.181
2445 :	anton	1.186	sl@ ( c_addr -- n ) gforth s_l_fetch
2446 :			""@i{n} is the sign-extended 32-bit value stored at @i{c_addr}.""
2447 :			n = (Tetrabyte)(c_addr);
2448 :	pazsan	1.181
2449 :	anton	1.186	l! ( w c_addr -- ) gforth l_store
2450 :			""Store the bottom 32 bits of @i{w} at @i{c_addr}.""
2451 :			(Tetrabyte)(c_addr) = w;
2452 :	pazsan	1.180
2453 :	pazsan	1.131	\+FFCALL
2454 :
2455 :	pazsan	1.136	av-start-void ( c_addr -- ) gforth av_start_void
2456 :	pazsan	1.131	av_start_void(alist, c_addr);
2457 :
2458 :	pazsan	1.136	av-start-int ( c_addr -- ) gforth av_start_int
2459 :	pazsan	1.131	av_start_int(alist, c_addr, &irv);
2460 :
2461 :	pazsan	1.136	av-start-float ( c_addr -- ) gforth av_start_float
2462 :	pazsan	1.131	av_start_float(alist, c_addr, &frv);
2463 :
2464 :	pazsan	1.136	av-start-double ( c_addr -- ) gforth av_start_double
2465 :	pazsan	1.131	av_start_double(alist, c_addr, &drv);
2466 :
2467 :	pazsan	1.136	av-start-longlong ( c_addr -- ) gforth av_start_longlong
2468 :	pazsan	1.131	av_start_longlong(alist, c_addr, &llrv);
2469 :
2470 :	pazsan	1.136	av-start-ptr ( c_addr -- ) gforth av_start_ptr
2471 :	pazsan	1.131	av_start_ptr(alist, c_addr, void*, &prv);
2472 :
2473 :			av-int ( w -- ) gforth av_int
2474 :			av_int(alist, w);
2475 :
2476 :	pazsan	1.136	av-float ( r -- ) gforth av_float
2477 :	pazsan	1.131	av_float(alist, r);
2478 :
2479 :	pazsan	1.136	av-double ( r -- ) gforth av_double
2480 :	pazsan	1.131	av_double(alist, r);
2481 :
2482 :	pazsan	1.136	av-longlong ( d -- ) gforth av_longlong
2483 :	pazsan	1.158	#ifdef BUGGY_LL_SIZE
2484 :			av_longlong(alist, DLO(d));
2485 :	pazsan	1.151	#else
2486 :	pazsan	1.131	av_longlong(alist, d);
2487 :	pazsan	1.151	#endif
2488 :	pazsan	1.131
2489 :	pazsan	1.136	av-ptr ( c_addr -- ) gforth av_ptr
2490 :	pazsan	1.131	av_ptr(alist, void*, c_addr);
2491 :
2492 :	pazsan	1.136	av-int-r ( R:w -- ) gforth av_int_r
2493 :			av_int(alist, w);
2494 :
2495 :			av-float-r ( -- ) gforth av_float_r
2496 :			float r = (Float)lp;
2497 :			lp += sizeof(Float);
2498 :			av_float(alist, r);
2499 :
2500 :			av-double-r ( -- ) gforth av_double_r
2501 :			double r = (Float)lp;
2502 :			lp += sizeof(Float);
2503 :			av_double(alist, r);
2504 :
2505 :			av-longlong-r ( R:d -- ) gforth av_longlong_r
2506 :	pazsan	1.158	#ifdef BUGGY_LL_SIZE
2507 :			av_longlong(alist, DLO(d));
2508 :	pazsan	1.151	#else
2509 :	pazsan	1.136	av_longlong(alist, d);
2510 :	pazsan	1.151	#endif
2511 :	pazsan	1.136
2512 :			av-ptr-r ( R:c_addr -- ) gforth av_ptr_r
2513 :			av_ptr(alist, void*, c_addr);
2514 :
2515 :	anton	1.173	av-call-void ( ... -- ... ) gforth av_call_void
2516 :	pazsan	1.131	SAVE_REGS
2517 :			av_call(alist);
2518 :			REST_REGS
2519 :
2520 :	anton	1.173	av-call-int ( ... -- ... w ) gforth av_call_int
2521 :	pazsan	1.131	SAVE_REGS
2522 :			av_call(alist);
2523 :	pazsan	1.134	REST_REGS
2524 :	pazsan	1.131	w = irv;
2525 :
2526 :	anton	1.173	av-call-float ( ... -- ... r ) gforth av_call_float
2527 :	pazsan	1.131	SAVE_REGS
2528 :			av_call(alist);
2529 :			REST_REGS
2530 :			r = frv;
2531 :
2532 :	anton	1.173	av-call-double ( ... -- ... r ) gforth av_call_double
2533 :	pazsan	1.131	SAVE_REGS
2534 :			av_call(alist);
2535 :			REST_REGS
2536 :			r = drv;
2537 :
2538 :	anton	1.173	av-call-longlong ( ... -- ... d ) gforth av_call_longlong
2539 :	pazsan	1.131	SAVE_REGS
2540 :			av_call(alist);
2541 :			REST_REGS
2542 :	pazsan	1.151	#ifdef BUGGY_LONG_LONG
2543 :	pazsan	1.158	DLO_IS(d, llrv);
2544 :			DHI_IS(d, 0);
2545 :	pazsan	1.152	#else
2546 :			d = llrv;
2547 :	pazsan	1.151	#endif
2548 :	pazsan	1.131
2549 :	anton	1.173	av-call-ptr ( ... -- ... c_addr ) gforth av_call_ptr
2550 :	pazsan	1.131	SAVE_REGS
2551 :			av_call(alist);
2552 :			REST_REGS
2553 :			c_addr = prv;
2554 :
2555 :	pazsan	1.135	alloc-callback ( a_ip -- c_addr ) gforth alloc_callback
2556 :	pazsan	1.185	c_addr = (char )alloc_callback(gforth_callback, (Xt )a_ip);
2557 :	pazsan	1.131
2558 :	pazsan	1.135	va-start-void ( -- ) gforth va_start_void
2559 :	pazsan	1.191	va_start_void(gforth_clist);
2560 :	pazsan	1.131
2561 :	pazsan	1.135	va-start-int ( -- ) gforth va_start_int
2562 :	pazsan	1.191	va_start_int(gforth_clist);
2563 :	pazsan	1.131
2564 :	pazsan	1.135	va-start-longlong ( -- ) gforth va_start_longlong
2565 :	pazsan	1.191	va_start_longlong(gforth_clist);
2566 :	pazsan	1.131
2567 :	pazsan	1.135	va-start-ptr ( -- ) gforth va_start_ptr
2568 :	pazsan	1.191	va_start_ptr(gforth_clist, (char *));
2569 :	pazsan	1.131
2570 :	pazsan	1.135	va-start-float ( -- ) gforth va_start_float
2571 :	pazsan	1.191	va_start_float(gforth_clist);
2572 :	pazsan	1.135
2573 :			va-start-double ( -- ) gforth va_start_double
2574 :	pazsan	1.191	va_start_double(gforth_clist);
2575 :	pazsan	1.135
2576 :			va-arg-int ( -- w ) gforth va_arg_int
2577 :	pazsan	1.191	w = va_arg_int(gforth_clist);
2578 :	pazsan	1.135
2579 :			va-arg-longlong ( -- d ) gforth va_arg_longlong
2580 :	pazsan	1.151	#ifdef BUGGY_LONG_LONG
2581 :	pazsan	1.191	DLO_IS(d, va_arg_longlong(gforth_clist));
2582 :	pazsan	1.158	DHI_IS(d, 0);
2583 :	pazsan	1.151	#else
2584 :	pazsan	1.191	d = va_arg_longlong(gforth_clist);
2585 :	pazsan	1.151	#endif
2586 :	pazsan	1.135
2587 :			va-arg-ptr ( -- c_addr ) gforth va_arg_ptr
2588 :	pazsan	1.191	c_addr = (char )va_arg_ptr(gforth_clist,char);
2589 :	pazsan	1.135
2590 :			va-arg-float ( -- r ) gforth va_arg_float
2591 :	pazsan	1.191	r = va_arg_float(gforth_clist);
2592 :	pazsan	1.135
2593 :			va-arg-double ( -- r ) gforth va_arg_double
2594 :	pazsan	1.191	r = va_arg_double(gforth_clist);
2595 :	pazsan	1.131
2596 :			va-return-void ( -- ) gforth va_return_void
2597 :	pazsan	1.191	va_return_void(gforth_clist);
2598 :	pazsan	1.131	return 0;
2599 :
2600 :			va-return-int ( w -- ) gforth va_return_int
2601 :	pazsan	1.191	va_return_int(gforth_clist, w);
2602 :	pazsan	1.131	return 0;
2603 :
2604 :			va-return-ptr ( c_addr -- ) gforth va_return_ptr
2605 :	pazsan	1.191	va_return_ptr(gforth_clist, void *, c_addr);
2606 :	pazsan	1.131	return 0;
2607 :
2608 :			va-return-longlong ( d -- ) gforth va_return_longlong
2609 :	pazsan	1.151	#ifdef BUGGY_LONG_LONG
2610 :	pazsan	1.191	va_return_longlong(gforth_clist, d.lo);
2611 :	pazsan	1.151	#else
2612 :	pazsan	1.191	va_return_longlong(gforth_clist, d);
2613 :	pazsan	1.151	#endif
2614 :	pazsan	1.131	return 0;
2615 :
2616 :			va-return-float ( r -- ) gforth va_return_float
2617 :	pazsan	1.191	va_return_float(gforth_clist, r);
2618 :	pazsan	1.131	return 0;
2619 :
2620 :			va-return-double ( r -- ) gforth va_return_double
2621 :	pazsan	1.191	va_return_double(gforth_clist, r);
2622 :	pazsan	1.131	return 0;
2623 :
2624 :	pazsan	1.142	\+
2625 :
2626 :	pazsan	1.175	\+LIBFFI
2627 :
2628 :			ffi-type ( n -- a_type ) gforth ffi_type
2629 :			static void* ffi_types[] =
2630 :			{ &ffi_type_void,
2631 :			&ffi_type_uint8, &ffi_type_sint8,
2632 :			&ffi_type_uint16, &ffi_type_sint16,
2633 :			&ffi_type_uint32, &ffi_type_sint32,
2634 :			&ffi_type_uint64, &ffi_type_sint64,
2635 :			&ffi_type_float, &ffi_type_double, &ffi_type_longdouble,
2636 :			&ffi_type_pointer };
2637 :			a_type = ffi_types[n];
2638 :
2639 :			ffi-size ( n1 -- n2 ) gforth ffi_size
2640 :			static int ffi_sizes[] =
2641 :			{ sizeof(ffi_cif), sizeof(ffi_closure) };
2642 :			n2 = ffi_sizes[n1];
2643 :
2644 :			ffi-prep-cif ( a_atypes n a_rtype a_cif -- w ) gforth ffi_prep_cif
2645 :	pazsan	1.190	w = ffi_prep_cif((ffi_cif *)a_cif, FFI_DEFAULT_ABI, n,
2646 :			(ffi_type )a_rtype, (ffi_type *)a_atypes);
2647 :	pazsan	1.175
2648 :			ffi-call ( a_avalues a_rvalue a_ip a_cif -- ) gforth ffi_call
2649 :	pazsan	1.183	SAVE_REGS
2650 :	pazsan	1.190	ffi_call((ffi_cif )a_cif, (void()())a_ip, (void )a_rvalue, (void *)a_avalues);
2651 :	pazsan	1.183	REST_REGS
2652 :	pazsan	1.175
2653 :			ffi-prep-closure ( a_ip a_cif a_closure -- w ) gforth ffi_prep_closure
2654 :	pazsan	1.190	w = ffi_prep_closure((ffi_closure )a_closure, (ffi_cif )a_cif, gforth_callback, (void *)a_ip);
2655 :	pazsan	1.178
2656 :	pazsan	1.175	ffi-2@ ( a_addr -- d ) gforth ffi_2fetch
2657 :			#ifdef BUGGY_LONG_LONG
2658 :	pazsan	1.195	DLO_IS(d, (Cell)(*a_addr));
2659 :	pazsan	1.175	DHI_IS(d, 0);
2660 :			#else
2661 :	pazsan	1.179	d = (DCell)(a_addr);
2662 :	pazsan	1.175	#endif
2663 :
2664 :			ffi-2! ( d a_addr -- ) gforth ffi_2store
2665 :			#ifdef BUGGY_LONG_LONG
2666 :			(Cell)(a_addr) = DLO(d);
2667 :			#else
2668 :			(DCell)(a_addr) = d;
2669 :			#endif
2670 :
2671 :			ffi-arg-int ( -- w ) gforth ffi_arg_int
2672 :	pazsan	1.191	w = (int )(*gforth_clist++);
2673 :	pazsan	1.175
2674 :	pazsan	1.194	ffi-arg-long ( -- w ) gforth ffi_arg_long
2675 :			w = (long )(*gforth_clist++);
2676 :
2677 :	pazsan	1.175	ffi-arg-longlong ( -- d ) gforth ffi_arg_longlong
2678 :			#ifdef BUGGY_LONG_LONG
2679 :	pazsan	1.195	DLO_IS(d, (Cell)(*gforth_clist++));
2680 :			DHI_IS(d, -((Cell)(*gforth_clist++)<0));
2681 :	pazsan	1.175	#else
2682 :	pazsan	1.191	d = (DCell)(*gforth_clist++);
2683 :	pazsan	1.175	#endif
2684 :
2685 :	pazsan	1.194	ffi-arg-dlong ( -- d ) gforth ffi_arg_dlong
2686 :			#ifdef BUGGY_LONG_LONG
2687 :	pazsan	1.195	DLO_IS(d, (Cell)(*gforth_clist++));
2688 :			DHI_IS(d, -((Cell)(*gforth_clist++)<0));
2689 :	pazsan	1.194	#else
2690 :			d = (Cell)(*gforth_clist++);
2691 :			#endif
2692 :
2693 :	pazsan	1.175	ffi-arg-ptr ( -- c_addr ) gforth ffi_arg_ptr
2694 :	pazsan	1.191	c_addr = (Char )(gforth_clist++);
2695 :	pazsan	1.175
2696 :			ffi-arg-float ( -- r ) gforth ffi_arg_float
2697 :	pazsan	1.191	r = (float)(*gforth_clist++);
2698 :	pazsan	1.175
2699 :			ffi-arg-double ( -- r ) gforth ffi_arg_double
2700 :	pazsan	1.191	r = (double)(*gforth_clist++);
2701 :	pazsan	1.175
2702 :	pazsan	1.178	ffi-ret-void ( -- ) gforth ffi_ret_void
2703 :			return 0;
2704 :
2705 :			ffi-ret-int ( w -- ) gforth ffi_ret_int
2706 :	pazsan	1.191	(int)(gforth_ritem) = w;
2707 :	pazsan	1.178	return 0;
2708 :	pazsan	1.175
2709 :	pazsan	1.178	ffi-ret-longlong ( d -- ) gforth ffi_ret_longlong
2710 :	pazsan	1.175	#ifdef BUGGY_LONG_LONG
2711 :	pazsan	1.191	(Cell)(gforth_ritem) = DLO(d);
2712 :	pazsan	1.175	#else
2713 :	pazsan	1.191	(DCell)(gforth_ritem) = d;
2714 :	pazsan	1.194	#endif
2715 :			return 0;
2716 :
2717 :			ffi-ret-dlong ( d -- ) gforth ffi_ret_dlong
2718 :			#ifdef BUGGY_LONG_LONG
2719 :			(Cell)(gforth_ritem) = DLO(d);
2720 :			#else
2721 :			(Cell)(gforth_ritem) = d;
2722 :			#endif
2723 :			return 0;
2724 :
2725 :			ffi-ret-long ( n -- ) gforth ffi_ret_long
2726 :			(Cell)(gforth_ritem) = n;
2727 :	pazsan	1.178	return 0;
2728 :	pazsan	1.175
2729 :	pazsan	1.178	ffi-ret-ptr ( c_addr -- ) gforth ffi_ret_ptr
2730 :	pazsan	1.191	(Char *)(gforth_ritem) = c_addr;
2731 :	pazsan	1.178	return 0;
2732 :	pazsan	1.175
2733 :	pazsan	1.178	ffi-ret-float ( r -- ) gforth ffi_ret_float
2734 :	pazsan	1.191	(float)(gforth_ritem) = r;
2735 :	pazsan	1.178	return 0;
2736 :	pazsan	1.175
2737 :	pazsan	1.178	ffi-ret-double ( r -- ) gforth ffi_ret_double
2738 :	pazsan	1.191	(double)(gforth_ritem) = r;
2739 :	pazsan	1.178	return 0;
2740 :	pazsan	1.175
2741 :			\+
2742 :
2743 :	pazsan	1.142	\+OLDCALL
2744 :	pazsan	1.131
2745 :	anton	1.1	define(`uploop',
2746 :			`pushdef(`$1', `$2')_uploop(`$1', `$2', `$3', `$4', `$5')`'popdef(`$1')')
2747 :			define(`_uploop',
2748 :			`ifelse($1, `$3', `$5',
2749 :			`$4`'define(`$1', incr($1))_uploop(`$1', `$2', `$3', `$4', `$5')')')
2750 :	anton	1.206
2751 :	anton	1.1	\ argflist(argnum): Forth argument list
2752 :			define(argflist,
2753 :			`ifelse($1, 0, `',
2754 :	anton	1.206	`uploop(`_i', 1, $1, ``u''`_i ', ``u''`_i')')')
2755 :	anton	1.1	\ argdlist(argnum): declare C's arguments
2756 :			define(argdlist,
2757 :			`ifelse($1, 0, `',
2758 :			`uploop(`_i', 1, $1, `Cell, ', `Cell')')')
2759 :			\ argclist(argnum): pass C's arguments
2760 :			define(argclist,
2761 :			`ifelse($1, 0, `',
2762 :	anton	1.206	`uploop(`_i', 1, $1, ``u''`_i, ', ``u''`_i')')')
2763 :	anton	1.1	\ icall(argnum)
2764 :			define(icall,
2765 :	anton	1.206	`icall$1 ( argflist($1) u -- uret ) gforth
2766 :	pazsan	1.9	uret = (SYSCALL(Cell(*)(argdlist($1)))u)(argclist($1));
2767 :	anton	1.1
2768 :			')
2769 :			define(fcall,
2770 :	anton	1.206	`fcall$1 ( argflist($1) u -- rret ) gforth
2771 :	pazsan	1.9	rret = (SYSCALL(Float(*)(argdlist($1)))u)(argclist($1));
2772 :	anton	1.1
2773 :			')
2774 :
2775 :	pazsan	1.46	\ close ' to keep fontify happy
2776 :	anton	1.1
2777 :			uploop(i, 0, 7, `icall(i)')
2778 :			icall(20)
2779 :			uploop(i, 0, 7, `fcall(i)')
2780 :			fcall(20)
2781 :
2782 :	pazsan	1.15	\+
2783 :	pazsan	1.131	\+
2784 :	anton	1.1
2785 :	pazsan	1.142	\g peephole
2786 :	pazsan	1.46
2787 :	pazsan	1.112	\+peephole
2788 :
2789 :	anton	1.119	compile-prim1 ( a_prim -- ) gforth compile_prim1
2790 :			""compile prim (incl. immargs) at @var{a_prim}""
2791 :			compile_prim1(a_prim);
2792 :
2793 :	anton	1.172	finish-code ( ... -- ... ) gforth finish_code
2794 :	anton	1.119	""Perform delayed steps in code generation (branch resolution, I-cache
2795 :			flushing).""
2796 :	anton	1.172	/* The ... above are a workaround for a bug in gcc-2.95, which fails
2797 :			to save spTOS (gforth-fast --enable-force-reg) */
2798 :	anton	1.119	finish_code();
2799 :
2800 :			forget-dyncode ( c_code -- f ) gforth-internal forget_dyncode
2801 :			f = forget_dyncode(c_code);
2802 :
2803 :			decompile-prim ( a_code -- a_prim ) gforth-internal decompile_prim
2804 :			""a_prim is the code address of the primitive that has been
2805 :			compile_prim1ed to a_code""
2806 :	anton	1.121	a_prim = (Cell *)decompile_code((Label)a_code);
2807 :	anton	1.119
2808 :	pazsan	1.112	\ set-next-code and call2 do not appear in images and can be
2809 :			\ renumbered arbitrarily
2810 :	pazsan	1.46
2811 :	pazsan	1.112	set-next-code ( #w -- ) gforth set_next_code
2812 :			#ifdef NO_IP
2813 :			next_code = (Label)w;
2814 :			#endif
2815 :	jwilke	1.34
2816 :	pazsan	1.112	call2 ( #a_callee #a_ret_addr -- R:a_ret_addr ) gforth
2817 :			/* call with explicit return address */
2818 :			#ifdef NO_IP
2819 :			INST_TAIL;
2820 :			JUMP(a_callee);
2821 :	anton	1.45	#else
2822 :	pazsan	1.112	assert(0);
2823 :	anton	1.45	#endif
2824 :	pazsan	1.131
2825 :			tag-offsets ( -- a_addr ) gforth tag_offsets
2826 :			extern Cell groups[32];
2827 :			a_addr = groups;
2828 :	anton	1.51
2829 :	pazsan	1.54	\+
2830 :	anton	1.128
2831 :			\g static_super
2832 :
2833 :	anton	1.173	ifdef(`STACK_CACHE_FILE',
2834 :	anton	1.147	`include(peeprules.vmg)')
2835 :	pazsan	1.54
2836 :	pazsan	1.112	\g end

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gforth: gforth/prim

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