Annotation of gforth/prim, revision 1.90
1.1 anton 1: \ Gforth primitives
2:
1.62 anton 3: \ Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc.
1.1 anton 4:
5: \ This file is part of Gforth.
6:
7: \ Gforth is free software; you can redistribute it and/or
8: \ modify it under the terms of the GNU General Public License
9: \ as published by the Free Software Foundation; either version 2
10: \ of the License, or (at your option) any later version.
11:
12: \ This program is distributed in the hope that it will be useful,
13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: \ GNU General Public License for more details.
16:
17: \ You should have received a copy of the GNU General Public License
18: \ along with this program; if not, write to the Free Software
1.63 anton 19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.1 anton 20:
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: \
1.47 anton 29: \ forth name ( stack effect ) category [pronunciation]
1.1 anton 30: \ [""glossary entry""]
31: \ C code
32: \ [:
33: \ Forth code]
34: \
1.47 anton 35: \ Note: Fields in brackets are optional. Word specifications have to
36: \ be separated by at least one empty line
1.1 anton 37: \
38: \ Both pronounciation and stack items (in the stack effect) must
1.48 anton 39: \ 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.
1.1 anton 42: \
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: \
57: \
58: \
59: \ The stack variables have the following types:
60: \
61: \ name matches type
62: \ f.* Bool
63: \ c.* Char
64: \ [nw].* Cell
65: \ u.* UCell
66: \ d.* DCell
67: \ ud.* UDCell
68: \ r.* Float
69: \ a_.* Cell *
70: \ c_.* Char *
71: \ f_.* Float *
72: \ df_.* DFloat *
73: \ sf_.* SFloat *
74: \ xt.* XT
75: \ f83name.* F83Name *
1.67 anton 76:
1.79 anton 77: \E stack data-stack sp Cell
78: \E stack fp-stack fp Float
79: \E stack return-stack rp Cell
80: \E
1.67 anton 81: \E get-current prefixes set-current
82: \E
83: \E s" Bool" single data-stack type-prefix f
84: \E s" Char" single data-stack type-prefix c
85: \E s" Cell" single data-stack type-prefix n
86: \E s" Cell" single data-stack type-prefix w
87: \E s" UCell" single data-stack type-prefix u
88: \E s" DCell" double data-stack type-prefix d
89: \E s" UDCell" double data-stack type-prefix ud
90: \E s" Float" single fp-stack type-prefix r
91: \E s" Cell *" single data-stack type-prefix a_
92: \E s" Char *" single data-stack type-prefix c_
93: \E s" Float *" single data-stack type-prefix f_
94: \E s" DFloat *" single data-stack type-prefix df_
95: \E s" SFloat *" single data-stack type-prefix sf_
96: \E s" Xt" single data-stack type-prefix xt
97: \E s" struct F83Name *" single data-stack type-prefix f83name
1.71 anton 98: \E s" struct Longname *" single data-stack type-prefix longname
1.67 anton 99: \E
100: \E return-stack stack-prefix R:
101: \E inst-stream stack-prefix #
102: \E
103: \E set-current
104:
1.1 anton 105: \
106: \
107: \
108: \ In addition the following names can be used:
109: \ ip the instruction pointer
110: \ sp the data stack pointer
111: \ rp the parameter stack pointer
112: \ lp the locals stack pointer
113: \ NEXT executes NEXT
114: \ cfa
115: \ NEXT1 executes NEXT1
116: \ FLAG(x) makes a Forth flag from a C flag
117: \
118: \
119: \
120: \ Percentages in comments are from Koopmans book: average/maximum use
121: \ (taken from four, not very representative benchmarks)
122: \
123: \
124: \
125: \ To do:
126: \
127: \ throw execute, cfa and NEXT1 out?
128: \ macroize *ip, ip++, *ip++ (pipelining)?
129:
130: \ these m4 macros would collide with identifiers
131: undefine(`index')
132: undefine(`shift')
1.78 pazsan 133: undefine(`symbols')
1.1 anton 134:
1.83 pazsan 135: \g control
136:
1.47 anton 137: noop ( -- ) gforth
1.1 anton 138: :
139: ;
140:
1.68 anton 141: lit ( #w -- w ) gforth
1.1 anton 142: :
143: r> dup @ swap cell+ >r ;
144:
1.47 anton 145: execute ( xt -- ) core
1.29 crook 146: ""Perform the semantics represented by the execution token, @i{xt}.""
1.1 anton 147: ip=IP;
1.64 anton 148: IF_spTOS(spTOS = sp[0]);
1.76 anton 149: SUPER_END;
1.1 anton 150: EXEC(xt);
151:
1.47 anton 152: perform ( a_addr -- ) gforth
1.55 anton 153: ""@code{@@ execute}.""
1.1 anton 154: /* and pfe */
155: ip=IP;
1.64 anton 156: IF_spTOS(spTOS = sp[0]);
1.76 anton 157: SUPER_END;
1.1 anton 158: EXEC(*(Xt *)a_addr);
159: :
160: @ execute ;
161:
1.31 jwilke 162: \fhas? skipbranchprims 0= [IF]
1.15 pazsan 163: \+glocals
1.1 anton 164:
1.68 anton 165: branch-lp+!# ( #ndisp #nlocals -- ) gforth branch_lp_plus_store_number
1.1 anton 166: /* this will probably not be used */
1.68 anton 167: lp += nlocals;
168: SET_IP((Xt *)(((Cell)(IP-2))+ndisp));
1.1 anton 169:
1.15 pazsan 170: \+
1.1 anton 171:
1.68 anton 172: branch ( #ndisp -- ) gforth
173: SET_IP((Xt *)(((Cell)(IP-1))+ndisp));
1.1 anton 174: :
175: r> dup @ + >r ;
176:
1.68 anton 177: \ condbranch(forthname,stackeffect,restline,code,forthcode)
1.1 anton 178: \ this is non-syntactical: code must open a brace that is closed by the macro
179: define(condbranch,
1.68 anton 180: $1 ( `#'ndisp $2 ) $3
181: $4 SET_IP((Xt *)(((Cell)(IP-1))+ndisp));
1.66 anton 182: TAIL;
1.1 anton 183: }
1.87 anton 184: SUPER_CONTINUE;
1.68 anton 185: $5
1.1 anton 186:
1.15 pazsan 187: \+glocals
1.1 anton 188:
1.68 anton 189: $1-lp+!`#' ( `#'ndisp `#'nlocals $2 ) $3_lp_plus_store_number
190: $4 lp += nlocals;
191: SET_IP((Xt *)(((Cell)(IP-2))+ndisp));
1.66 anton 192: TAIL;
1.1 anton 193: }
1.87 anton 194: SUPER_CONTINUE;
1.1 anton 195:
1.15 pazsan 196: \+
1.1 anton 197: )
198:
1.68 anton 199: condbranch(?branch,f --,f83 question_branch,
1.1 anton 200: if (f==0) {
1.5 jwilke 201: ,:
202: 0= dup \ !f !f
203: r> dup @ \ !f !f IP branchoffset
204: rot and + \ !f IP|IP+branchoffset
205: swap 0= cell and + \ IP''
206: >r ;)
1.1 anton 207:
208: \ we don't need an lp_plus_store version of the ?dup-stuff, because it
209: \ is only used in if's (yet)
210:
1.15 pazsan 211: \+xconds
1.1 anton 212:
1.68 anton 213: ?dup-?branch ( #ndisp f -- f ) new question_dupe_question_branch
1.1 anton 214: ""The run-time procedure compiled by @code{?DUP-IF}.""
215: if (f==0) {
216: sp++;
1.64 anton 217: IF_spTOS(spTOS = sp[0]);
1.68 anton 218: SET_IP((Xt *)(((Cell)(IP-1))+ndisp));
219: TAIL;
1.1 anton 220: }
1.87 anton 221: SUPER_CONTINUE;
1.1 anton 222:
1.68 anton 223: ?dup-0=-?branch ( #ndisp f -- ) new question_dupe_zero_equals_question_branch
1.1 anton 224: ""The run-time procedure compiled by @code{?DUP-0=-IF}.""
225: /* the approach taken here of declaring the word as having the stack
226: effect ( f -- ) and correcting for it in the branch-taken case costs a
227: few cycles in that case, but is easy to convert to a CONDBRANCH
228: invocation */
229: if (f!=0) {
230: sp--;
1.68 anton 231: SET_IP((Xt *)(((Cell)(IP-1))+ndisp));
1.1 anton 232: NEXT;
233: }
1.87 anton 234: SUPER_CONTINUE;
1.1 anton 235:
1.15 pazsan 236: \+
1.31 jwilke 237: \f[THEN]
238: \fhas? skiploopprims 0= [IF]
1.1 anton 239:
1.68 anton 240: condbranch((next),R:n1 -- R:n2,cmFORTH paren_next,
1.65 anton 241: n2=n1-1;
242: if (n1) {
1.1 anton 243: ,:
244: r> r> dup 1- >r
245: IF dup @ + >r ELSE cell+ >r THEN ;)
246:
1.68 anton 247: condbranch((loop),R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_loop,
1.65 anton 248: n2=n1+1;
249: if (n2 != nlimit) {
1.1 anton 250: ,:
251: r> r> 1+ r> 2dup =
252: IF >r 1- >r cell+ >r
253: ELSE >r >r dup @ + >r THEN ;)
254:
1.68 anton 255: condbranch((+loop),n R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_plus_loop,
1.1 anton 256: /* !! check this thoroughly */
257: /* sign bit manipulation and test: (x^y)<0 is equivalent to (x<0) != (y<0) */
258: /* dependent upon two's complement arithmetic */
1.65 anton 259: Cell olddiff = n1-nlimit;
260: n2=n1+n;
1.1 anton 261: if ((olddiff^(olddiff+n))>=0 /* the limit is not crossed */
262: || (olddiff^n)>=0 /* it is a wrap-around effect */) {
263: ,:
264: r> swap
265: r> r> 2dup - >r
266: 2 pick r@ + r@ xor 0< 0=
267: 3 pick r> xor 0< 0= or
268: IF >r + >r dup @ + >r
269: ELSE >r >r drop cell+ >r THEN ;)
270:
1.15 pazsan 271: \+xconds
1.1 anton 272:
1.68 anton 273: condbranch((-loop),u R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_minus_loop,
1.65 anton 274: UCell olddiff = n1-nlimit;
275: n2=n1-u;
1.1 anton 276: if (olddiff>u) {
277: ,)
278:
1.68 anton 279: condbranch((s+loop),n R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_symmetric_plus_loop,
1.1 anton 280: ""The run-time procedure compiled by S+LOOP. It loops until the index
281: crosses the boundary between limit and limit-sign(n). I.e. a symmetric
282: version of (+LOOP).""
283: /* !! check this thoroughly */
1.65 anton 284: Cell diff = n1-nlimit;
1.1 anton 285: Cell newdiff = diff+n;
286: if (n<0) {
287: diff = -diff;
288: newdiff = -newdiff;
289: }
1.65 anton 290: n2=n1+n;
1.1 anton 291: if (diff>=0 || newdiff<0) {
292: ,)
293:
1.15 pazsan 294: \+
1.1 anton 295:
1.65 anton 296: unloop ( R:w1 R:w2 -- ) core
297: /* !! alias for 2rdrop */
1.1 anton 298: :
299: r> rdrop rdrop >r ;
300:
1.65 anton 301: (for) ( ncount -- R:nlimit R:ncount ) cmFORTH paren_for
1.1 anton 302: /* or (for) = >r -- collides with unloop! */
1.65 anton 303: nlimit=0;
1.1 anton 304: :
305: r> swap 0 >r >r >r ;
306:
1.65 anton 307: (do) ( nlimit nstart -- R:nlimit R:nstart ) gforth paren_do
1.1 anton 308: :
309: r> swap rot >r >r >r ;
310:
1.68 anton 311: (?do) ( #ndisp nlimit nstart -- R:nlimit R:nstart ) gforth paren_question_do
1.1 anton 312: if (nstart == nlimit) {
1.68 anton 313: SET_IP((Xt *)(((Cell)(IP-1))+ndisp));
314: TAIL;
1.1 anton 315: }
1.87 anton 316: SUPER_CONTINUE;
1.1 anton 317: :
318: 2dup =
319: IF r> swap rot >r >r
320: dup @ + >r
321: ELSE r> swap rot >r >r
322: cell+ >r
323: THEN ; \ --> CORE-EXT
324:
1.15 pazsan 325: \+xconds
1.1 anton 326:
1.68 anton 327: (+do) ( #ndisp nlimit nstart -- R:nlimit R:nstart ) gforth paren_plus_do
1.1 anton 328: if (nstart >= nlimit) {
1.68 anton 329: SET_IP((Xt *)(((Cell)(IP-1))+ndisp));
330: TAIL;
1.1 anton 331: }
1.87 anton 332: SUPER_CONTINUE;
1.1 anton 333: :
334: swap 2dup
335: r> swap >r swap >r
336: >=
337: IF
338: dup @ +
339: ELSE
340: cell+
341: THEN >r ;
342:
1.68 anton 343: (u+do) ( #ndisp ulimit ustart -- R:ulimit R:ustart ) gforth paren_u_plus_do
1.1 anton 344: if (ustart >= ulimit) {
1.68 anton 345: SET_IP((Xt *)(((Cell)(IP-1))+ndisp));
346: TAIL;
1.1 anton 347: }
1.87 anton 348: SUPER_CONTINUE;
1.1 anton 349: :
350: swap 2dup
351: r> swap >r swap >r
352: u>=
353: IF
354: dup @ +
355: ELSE
356: cell+
357: THEN >r ;
358:
1.68 anton 359: (-do) ( #ndisp nlimit nstart -- R:nlimit R:nstart ) gforth paren_minus_do
1.1 anton 360: if (nstart <= nlimit) {
1.68 anton 361: SET_IP((Xt *)(((Cell)(IP-1))+ndisp));
362: TAIL;
1.1 anton 363: }
1.87 anton 364: SUPER_CONTINUE;
1.1 anton 365: :
366: swap 2dup
367: r> swap >r swap >r
368: <=
369: IF
370: dup @ +
371: ELSE
372: cell+
373: THEN >r ;
374:
1.68 anton 375: (u-do) ( #ndisp ulimit ustart -- R:ulimit R:ustart ) gforth paren_u_minus_do
1.1 anton 376: if (ustart <= ulimit) {
1.68 anton 377: SET_IP((Xt *)(((Cell)(IP-1))+ndisp));
378: TAIL;
1.1 anton 379: }
1.87 anton 380: SUPER_CONTINUE;
1.1 anton 381: :
382: swap 2dup
383: r> swap >r swap >r
384: u<=
385: IF
386: dup @ +
387: ELSE
388: cell+
389: THEN >r ;
390:
1.15 pazsan 391: \+
1.1 anton 392:
1.5 jwilke 393: \ don't make any assumptions where the return stack is!!
394: \ implement this in machine code if it should run quickly!
395:
1.65 anton 396: i ( R:n -- R:n n ) core
1.1 anton 397: :
1.5 jwilke 398: \ rp@ cell+ @ ;
399: r> r> tuck >r >r ;
1.1 anton 400:
1.65 anton 401: i' ( R:w R:w2 -- R:w R:w2 w ) gforth i_tick
1.1 anton 402: :
1.5 jwilke 403: \ rp@ cell+ cell+ @ ;
404: r> r> r> dup itmp ! >r >r >r itmp @ ;
405: variable itmp
1.1 anton 406:
1.65 anton 407: j ( R:n R:d1 -- n R:n R:d1 ) core
1.1 anton 408: :
1.5 jwilke 409: \ rp@ cell+ cell+ cell+ @ ;
410: r> r> r> r> dup itmp ! >r >r >r >r itmp @ ;
411: [IFUNDEF] itmp variable itmp [THEN]
1.1 anton 412:
1.65 anton 413: k ( R:n R:d1 R:d2 -- n R:n R:d1 R:d2 ) gforth
1.1 anton 414: :
1.5 jwilke 415: \ rp@ [ 5 cells ] Literal + @ ;
416: r> r> r> r> r> r> dup itmp ! >r >r >r >r >r >r itmp @ ;
417: [IFUNDEF] itmp variable itmp [THEN]
1.31 jwilke 418:
419: \f[THEN]
1.1 anton 420:
421: \ digit is high-level: 0/0%
422:
1.83 pazsan 423: \g strings
424:
1.47 anton 425: move ( c_from c_to ucount -- ) core
1.52 anton 426: ""Copy the contents of @i{ucount} aus at @i{c-from} to
1.33 anton 427: @i{c-to}. @code{move} works correctly even if the two areas overlap.""
1.52 anton 428: /* !! note that the standard specifies addr, not c-addr */
1.1 anton 429: memmove(c_to,c_from,ucount);
430: /* make an Ifdef for bsd and others? */
431: :
432: >r 2dup u< IF r> cmove> ELSE r> cmove THEN ;
433:
1.47 anton 434: cmove ( c_from c_to u -- ) string c_move
1.33 anton 435: ""Copy the contents of @i{ucount} characters from data space at
436: @i{c-from} to @i{c-to}. The copy proceeds @code{char}-by-@code{char}
437: from low address to high address; i.e., for overlapping areas it is
438: safe if @i{c-to}=<@i{c-from}.""
1.1 anton 439: while (u-- > 0)
440: *c_to++ = *c_from++;
441: :
442: bounds ?DO dup c@ I c! 1+ LOOP drop ;
443:
1.47 anton 444: cmove> ( c_from c_to u -- ) string c_move_up
1.33 anton 445: ""Copy the contents of @i{ucount} characters from data space at
446: @i{c-from} to @i{c-to}. The copy proceeds @code{char}-by-@code{char}
447: from high address to low address; i.e., for overlapping areas it is
448: safe if @i{c-to}>=@i{c-from}.""
1.1 anton 449: while (u-- > 0)
450: c_to[u] = c_from[u];
451: :
452: dup 0= IF drop 2drop exit THEN
453: rot over + -rot bounds swap 1-
454: DO 1- dup c@ I c! -1 +LOOP drop ;
455:
1.47 anton 456: fill ( c_addr u c -- ) core
1.52 anton 457: ""Store @i{c} in @i{u} chars starting at @i{c-addr}.""
1.1 anton 458: memset(c_addr,c,u);
459: :
460: -rot bounds
461: ?DO dup I c! LOOP drop ;
462:
1.47 anton 463: compare ( c_addr1 u1 c_addr2 u2 -- n ) string
1.29 crook 464: ""Compare two strings lexicographically. If they are equal, @i{n} is 0; if
465: the first string is smaller, @i{n} is -1; if the first string is larger, @i{n}
1.1 anton 466: is 1. Currently this is based on the machine's character
1.26 crook 467: comparison. In the future, this may change to consider the current
1.1 anton 468: locale and its collation order.""
1.46 pazsan 469: /* close ' to keep fontify happy */
1.1 anton 470: n = memcmp(c_addr1, c_addr2, u1<u2 ? u1 : u2);
471: if (n==0)
472: n = u1-u2;
473: if (n<0)
474: n = -1;
475: else if (n>0)
476: n = 1;
477: :
1.43 pazsan 478: rot 2dup swap - >r min swap -text dup
479: IF rdrop ELSE drop r> sgn THEN ;
480: : sgn ( n -- -1/0/1 )
481: dup 0= IF EXIT THEN 0< 2* 1+ ;
1.1 anton 482:
1.47 anton 483: -text ( c_addr1 u c_addr2 -- n ) new dash_text
1.1 anton 484: n = memcmp(c_addr1, c_addr2, u);
485: if (n<0)
486: n = -1;
487: else if (n>0)
488: n = 1;
489: :
490: swap bounds
491: ?DO dup c@ I c@ = WHILE 1+ LOOP drop 0
1.49 pazsan 492: ELSE c@ I c@ - unloop THEN sgn ;
1.43 pazsan 493: : sgn ( n -- -1/0/1 )
494: dup 0= IF EXIT THEN 0< 2* 1+ ;
1.1 anton 495:
1.47 anton 496: toupper ( c1 -- c2 ) gforth
1.29 crook 497: ""If @i{c1} is a lower-case character (in the current locale), @i{c2}
1.25 anton 498: is the equivalent upper-case character. All other characters are unchanged.""
1.1 anton 499: c2 = toupper(c1);
500: :
501: dup [char] a - [ char z char a - 1 + ] Literal u< bl and - ;
502:
1.47 anton 503: capscomp ( c_addr1 u c_addr2 -- n ) new
1.1 anton 504: n = memcasecmp(c_addr1, c_addr2, u); /* !! use something that works in all locales */
505: if (n<0)
506: n = -1;
507: else if (n>0)
508: n = 1;
509: :
510: swap bounds
511: ?DO dup c@ I c@ <>
512: IF dup c@ toupper I c@ toupper =
513: ELSE true THEN WHILE 1+ LOOP drop 0
1.49 pazsan 514: ELSE c@ toupper I c@ toupper - unloop THEN sgn ;
1.1 anton 515:
1.47 anton 516: -trailing ( c_addr u1 -- c_addr u2 ) string dash_trailing
1.29 crook 517: ""Adjust the string specified by @i{c-addr, u1} to remove all trailing
518: spaces. @i{u2} is the length of the modified string.""
1.1 anton 519: u2 = u1;
1.4 anton 520: while (u2>0 && c_addr[u2-1] == ' ')
1.1 anton 521: u2--;
522: :
523: BEGIN 1- 2dup + c@ bl = WHILE
524: dup 0= UNTIL ELSE 1+ THEN ;
525:
1.47 anton 526: /string ( c_addr1 u1 n -- c_addr2 u2 ) string slash_string
1.29 crook 527: ""Adjust the string specified by @i{c-addr1, u1} to remove @i{n}
1.27 crook 528: characters from the start of the string.""
1.1 anton 529: c_addr2 = c_addr1+n;
530: u2 = u1-n;
531: :
532: tuck - >r + r> dup 0< IF - 0 THEN ;
533:
1.83 pazsan 534: \g arith
535:
1.47 anton 536: + ( n1 n2 -- n ) core plus
1.1 anton 537: n = n1+n2;
538:
539: \ PFE-0.9.14 has it differently, but the next release will have it as follows
1.47 anton 540: under+ ( n1 n2 n3 -- n n2 ) gforth under_plus
1.29 crook 541: ""add @i{n3} to @i{n1} (giving @i{n})""
1.1 anton 542: n = n1+n3;
543: :
544: rot + swap ;
545:
1.47 anton 546: - ( n1 n2 -- n ) core minus
1.1 anton 547: n = n1-n2;
548: :
549: negate + ;
550:
1.47 anton 551: negate ( n1 -- n2 ) core
1.1 anton 552: /* use minus as alias */
553: n2 = -n1;
554: :
555: invert 1+ ;
556:
1.47 anton 557: 1+ ( n1 -- n2 ) core one_plus
1.1 anton 558: n2 = n1+1;
559: :
560: 1 + ;
561:
1.47 anton 562: 1- ( n1 -- n2 ) core one_minus
1.1 anton 563: n2 = n1-1;
564: :
565: 1 - ;
566:
1.47 anton 567: max ( n1 n2 -- n ) core
1.1 anton 568: if (n1<n2)
569: n = n2;
570: else
571: n = n1;
572: :
573: 2dup < IF swap THEN drop ;
574:
1.47 anton 575: min ( n1 n2 -- n ) core
1.1 anton 576: if (n1<n2)
577: n = n1;
578: else
579: n = n2;
580: :
581: 2dup > IF swap THEN drop ;
582:
1.52 anton 583: abs ( n -- u ) core
584: if (n<0)
585: u = -n;
1.1 anton 586: else
1.52 anton 587: u = n;
1.1 anton 588: :
589: dup 0< IF negate THEN ;
590:
1.47 anton 591: * ( n1 n2 -- n ) core star
1.1 anton 592: n = n1*n2;
593: :
594: um* drop ;
595:
1.47 anton 596: / ( n1 n2 -- n ) core slash
1.1 anton 597: n = n1/n2;
598: :
599: /mod nip ;
600:
1.47 anton 601: mod ( n1 n2 -- n ) core
1.1 anton 602: n = n1%n2;
603: :
604: /mod drop ;
605:
1.47 anton 606: /mod ( n1 n2 -- n3 n4 ) core slash_mod
1.1 anton 607: n4 = n1/n2;
608: n3 = n1%n2; /* !! is this correct? look into C standard! */
609: :
610: >r s>d r> fm/mod ;
611:
1.47 anton 612: 2* ( n1 -- n2 ) core two_star
1.52 anton 613: ""Shift left by 1; also works on unsigned numbers""
1.1 anton 614: n2 = 2*n1;
615: :
616: dup + ;
617:
1.47 anton 618: 2/ ( n1 -- n2 ) core two_slash
1.52 anton 619: ""Arithmetic shift right by 1. For signed numbers this is a floored
620: division by 2 (note that @code{/} not necessarily floors).""
1.1 anton 621: n2 = n1>>1;
622: :
623: dup MINI and IF 1 ELSE 0 THEN
624: [ bits/byte cell * 1- ] literal
1.5 jwilke 625: 0 DO 2* swap dup 2* >r MINI and
1.1 anton 626: IF 1 ELSE 0 THEN or r> swap
627: LOOP nip ;
628:
1.47 anton 629: fm/mod ( d1 n1 -- n2 n3 ) core f_m_slash_mod
1.29 crook 630: ""Floored division: @i{d1} = @i{n3}*@i{n1}+@i{n2}, @i{n1}>@i{n2}>=0 or 0>=@i{n2}>@i{n1}.""
1.1 anton 631: #ifdef BUGGY_LONG_LONG
632: DCell r = fmdiv(d1,n1);
633: n2=r.hi;
634: n3=r.lo;
635: #else
636: /* assumes that the processor uses either floored or symmetric division */
637: n3 = d1/n1;
638: n2 = d1%n1;
639: /* note that this 1%-3>0 is optimized by the compiler */
640: if (1%-3>0 && (d1<0) != (n1<0) && n2!=0) {
641: n3--;
642: n2+=n1;
643: }
644: #endif
645: :
646: dup >r dup 0< IF negate >r dnegate r> THEN
647: over 0< IF tuck + swap THEN
648: um/mod
649: r> 0< IF swap negate swap THEN ;
650:
1.47 anton 651: sm/rem ( d1 n1 -- n2 n3 ) core s_m_slash_rem
1.29 crook 652: ""Symmetric division: @i{d1} = @i{n3}*@i{n1}+@i{n2}, sign(@i{n2})=sign(@i{d1}) or 0.""
1.1 anton 653: #ifdef BUGGY_LONG_LONG
654: DCell r = smdiv(d1,n1);
655: n2=r.hi;
656: n3=r.lo;
657: #else
658: /* assumes that the processor uses either floored or symmetric division */
659: n3 = d1/n1;
660: n2 = d1%n1;
661: /* note that this 1%-3<0 is optimized by the compiler */
662: if (1%-3<0 && (d1<0) != (n1<0) && n2!=0) {
663: n3++;
664: n2-=n1;
665: }
666: #endif
667: :
668: over >r dup >r abs -rot
669: dabs rot um/mod
670: r> r@ xor 0< IF negate THEN
671: r> 0< IF swap negate swap THEN ;
672:
1.47 anton 673: m* ( n1 n2 -- d ) core m_star
1.1 anton 674: #ifdef BUGGY_LONG_LONG
675: d = mmul(n1,n2);
676: #else
677: d = (DCell)n1 * (DCell)n2;
678: #endif
679: :
680: 2dup 0< and >r
681: 2dup swap 0< and >r
682: um* r> - r> - ;
683:
1.47 anton 684: um* ( u1 u2 -- ud ) core u_m_star
1.1 anton 685: /* use u* as alias */
686: #ifdef BUGGY_LONG_LONG
687: ud = ummul(u1,u2);
688: #else
689: ud = (UDCell)u1 * (UDCell)u2;
690: #endif
691: :
692: >r >r 0 0 r> r> [ 8 cells ] literal 0
693: DO
694: over >r dup >r 0< and d2*+ drop
695: r> 2* r> swap
696: LOOP 2drop ;
697: : d2*+ ( ud n -- ud+n c )
698: over MINI
699: and >r >r 2dup d+ swap r> + swap r> ;
700:
1.47 anton 701: um/mod ( ud u1 -- u2 u3 ) core u_m_slash_mod
1.32 anton 702: ""ud=u3*u1+u2, u1>u2>=0""
1.1 anton 703: #ifdef BUGGY_LONG_LONG
704: UDCell r = umdiv(ud,u1);
705: u2=r.hi;
706: u3=r.lo;
707: #else
708: u3 = ud/u1;
709: u2 = ud%u1;
710: #endif
711: :
712: 0 swap [ 8 cells 1 + ] literal 0
1.5 jwilke 713: ?DO /modstep
1.1 anton 714: LOOP drop swap 1 rshift or swap ;
715: : /modstep ( ud c R: u -- ud-?u c R: u )
1.5 jwilke 716: >r over r@ u< 0= or IF r@ - 1 ELSE 0 THEN d2*+ r> ;
1.1 anton 717: : d2*+ ( ud n -- ud+n c )
718: over MINI
719: and >r >r 2dup d+ swap r> + swap r> ;
720:
1.47 anton 721: m+ ( d1 n -- d2 ) double m_plus
1.1 anton 722: #ifdef BUGGY_LONG_LONG
723: d2.lo = d1.lo+n;
724: d2.hi = d1.hi - (n<0) + (d2.lo<d1.lo);
725: #else
726: d2 = d1+n;
727: #endif
728: :
729: s>d d+ ;
730:
1.47 anton 731: d+ ( d1 d2 -- d ) double d_plus
1.1 anton 732: #ifdef BUGGY_LONG_LONG
733: d.lo = d1.lo+d2.lo;
734: d.hi = d1.hi + d2.hi + (d.lo<d1.lo);
735: #else
736: d = d1+d2;
737: #endif
738: :
739: rot + >r tuck + swap over u> r> swap - ;
740:
1.47 anton 741: d- ( d1 d2 -- d ) double d_minus
1.1 anton 742: #ifdef BUGGY_LONG_LONG
743: d.lo = d1.lo - d2.lo;
744: d.hi = d1.hi-d2.hi-(d1.lo<d2.lo);
745: #else
746: d = d1-d2;
747: #endif
748: :
749: dnegate d+ ;
750:
1.47 anton 751: dnegate ( d1 -- d2 ) double d_negate
1.1 anton 752: /* use dminus as alias */
753: #ifdef BUGGY_LONG_LONG
754: d2 = dnegate(d1);
755: #else
756: d2 = -d1;
757: #endif
758: :
759: invert swap negate tuck 0= - ;
760:
1.47 anton 761: d2* ( d1 -- d2 ) double d_two_star
1.52 anton 762: ""Shift left by 1; also works on unsigned numbers""
1.1 anton 763: #ifdef BUGGY_LONG_LONG
764: d2.lo = d1.lo<<1;
765: d2.hi = (d1.hi<<1) | (d1.lo>>(CELL_BITS-1));
766: #else
767: d2 = 2*d1;
768: #endif
769: :
770: 2dup d+ ;
771:
1.47 anton 772: d2/ ( d1 -- d2 ) double d_two_slash
1.52 anton 773: ""Arithmetic shift right by 1. For signed numbers this is a floored
774: division by 2.""
1.1 anton 775: #ifdef BUGGY_LONG_LONG
776: d2.hi = d1.hi>>1;
777: d2.lo= (d1.lo>>1) | (d1.hi<<(CELL_BITS-1));
778: #else
779: d2 = d1>>1;
780: #endif
781: :
782: dup 1 and >r 2/ swap 2/ [ 1 8 cells 1- lshift 1- ] Literal and
783: r> IF [ 1 8 cells 1- lshift ] Literal + THEN swap ;
784:
1.47 anton 785: and ( w1 w2 -- w ) core
1.1 anton 786: w = w1&w2;
787:
1.47 anton 788: or ( w1 w2 -- w ) core
1.1 anton 789: w = w1|w2;
790: :
791: invert swap invert and invert ;
792:
1.47 anton 793: xor ( w1 w2 -- w ) core x_or
1.1 anton 794: w = w1^w2;
795:
1.47 anton 796: invert ( w1 -- w2 ) core
1.1 anton 797: w2 = ~w1;
798: :
799: MAXU xor ;
800:
1.47 anton 801: rshift ( u1 n -- u2 ) core r_shift
1.53 anton 802: ""Logical shift right by @i{n} bits.""
1.1 anton 803: u2 = u1>>n;
804: :
805: 0 ?DO 2/ MAXI and LOOP ;
806:
1.47 anton 807: lshift ( u1 n -- u2 ) core l_shift
1.1 anton 808: u2 = u1<<n;
809: :
810: 0 ?DO 2* LOOP ;
811:
812: \ comparisons(prefix, args, prefix, arg1, arg2, wordsets...)
813: define(comparisons,
1.47 anton 814: $1= ( $2 -- f ) $6 $3equals
1.1 anton 815: f = FLAG($4==$5);
816: :
817: [ char $1x char 0 = [IF]
818: ] IF false ELSE true THEN [
819: [ELSE]
820: ] xor 0= [
821: [THEN] ] ;
822:
1.47 anton 823: $1<> ( $2 -- f ) $7 $3not_equals
1.1 anton 824: f = FLAG($4!=$5);
825: :
826: [ char $1x char 0 = [IF]
827: ] IF true ELSE false THEN [
828: [ELSE]
829: ] xor 0<> [
830: [THEN] ] ;
831:
1.47 anton 832: $1< ( $2 -- f ) $8 $3less_than
1.1 anton 833: f = FLAG($4<$5);
834: :
835: [ char $1x char 0 = [IF]
836: ] MINI and 0<> [
837: [ELSE] char $1x char u = [IF]
838: ] 2dup xor 0< IF nip ELSE - THEN 0< [
839: [ELSE]
840: ] MINI xor >r MINI xor r> u< [
841: [THEN]
842: [THEN] ] ;
843:
1.47 anton 844: $1> ( $2 -- f ) $9 $3greater_than
1.1 anton 845: f = FLAG($4>$5);
846: :
847: [ char $1x char 0 = [IF] ] negate [ [ELSE] ] swap [ [THEN] ]
848: $1< ;
849:
1.47 anton 850: $1<= ( $2 -- f ) gforth $3less_or_equal
1.1 anton 851: f = FLAG($4<=$5);
852: :
853: $1> 0= ;
854:
1.47 anton 855: $1>= ( $2 -- f ) gforth $3greater_or_equal
1.1 anton 856: f = FLAG($4>=$5);
857: :
858: [ char $1x char 0 = [IF] ] negate [ [ELSE] ] swap [ [THEN] ]
859: $1<= ;
860:
861: )
862:
863: comparisons(0, n, zero_, n, 0, core, core-ext, core, core-ext)
864: comparisons(, n1 n2, , n1, n2, core, core-ext, core, core)
865: comparisons(u, u1 u2, u_, u1, u2, gforth, gforth, core, core-ext)
866:
867: \ dcomparisons(prefix, args, prefix, arg1, arg2, wordsets...)
868: define(dcomparisons,
1.47 anton 869: $1= ( $2 -- f ) $6 $3equals
1.1 anton 870: #ifdef BUGGY_LONG_LONG
871: f = FLAG($4.lo==$5.lo && $4.hi==$5.hi);
872: #else
873: f = FLAG($4==$5);
874: #endif
875:
1.47 anton 876: $1<> ( $2 -- f ) $7 $3not_equals
1.1 anton 877: #ifdef BUGGY_LONG_LONG
878: f = FLAG($4.lo!=$5.lo || $4.hi!=$5.hi);
879: #else
880: f = FLAG($4!=$5);
881: #endif
882:
1.47 anton 883: $1< ( $2 -- f ) $8 $3less_than
1.1 anton 884: #ifdef BUGGY_LONG_LONG
885: f = FLAG($4.hi==$5.hi ? $4.lo<$5.lo : $4.hi<$5.hi);
886: #else
887: f = FLAG($4<$5);
888: #endif
889:
1.47 anton 890: $1> ( $2 -- f ) $9 $3greater_than
1.1 anton 891: #ifdef BUGGY_LONG_LONG
892: f = FLAG($4.hi==$5.hi ? $4.lo>$5.lo : $4.hi>$5.hi);
893: #else
894: f = FLAG($4>$5);
895: #endif
896:
1.47 anton 897: $1<= ( $2 -- f ) gforth $3less_or_equal
1.1 anton 898: #ifdef BUGGY_LONG_LONG
899: f = FLAG($4.hi==$5.hi ? $4.lo<=$5.lo : $4.hi<=$5.hi);
900: #else
901: f = FLAG($4<=$5);
902: #endif
903:
1.47 anton 904: $1>= ( $2 -- f ) gforth $3greater_or_equal
1.1 anton 905: #ifdef BUGGY_LONG_LONG
906: f = FLAG($4.hi==$5.hi ? $4.lo>=$5.lo : $4.hi>=$5.hi);
907: #else
908: f = FLAG($4>=$5);
909: #endif
910:
911: )
912:
1.15 pazsan 913: \+dcomps
1.1 anton 914:
915: dcomparisons(d, d1 d2, d_, d1, d2, double, gforth, double, gforth)
916: dcomparisons(d0, d, d_zero_, d, DZERO, double, gforth, double, gforth)
917: dcomparisons(du, ud1 ud2, d_u_, ud1, ud2, gforth, gforth, double-ext, gforth)
918:
1.15 pazsan 919: \+
1.1 anton 920:
1.47 anton 921: within ( u1 u2 u3 -- f ) core-ext
1.32 anton 922: ""u2=<u1<u3 or: u3=<u2 and u1 is not in [u3,u2). This works for
923: unsigned and signed numbers (but not a mixture). Another way to think
924: about this word is to consider the numbers as a circle (wrapping
925: around from @code{max-u} to 0 for unsigned, and from @code{max-n} to
926: min-n for signed numbers); now consider the range from u2 towards
927: increasing numbers up to and excluding u3 (giving an empty range if
1.52 anton 928: u2=u3); if u1 is in this range, @code{within} returns true.""
1.1 anton 929: f = FLAG(u1-u2 < u3-u2);
930: :
931: over - >r - r> u< ;
932:
1.83 pazsan 933: \g internal
934:
1.47 anton 935: sp@ ( -- a_addr ) gforth sp_fetch
1.1 anton 936: a_addr = sp+1;
937:
1.47 anton 938: sp! ( a_addr -- ) gforth sp_store
1.1 anton 939: sp = a_addr;
1.64 anton 940: /* works with and without spTOS caching */
1.1 anton 941:
1.47 anton 942: rp@ ( -- a_addr ) gforth rp_fetch
1.1 anton 943: a_addr = rp;
944:
1.47 anton 945: rp! ( a_addr -- ) gforth rp_store
1.1 anton 946: rp = a_addr;
947:
1.15 pazsan 948: \+floating
1.1 anton 949:
1.47 anton 950: fp@ ( -- f_addr ) gforth fp_fetch
1.1 anton 951: f_addr = fp;
952:
1.47 anton 953: fp! ( f_addr -- ) gforth fp_store
1.1 anton 954: fp = f_addr;
955:
1.15 pazsan 956: \+
1.1 anton 957:
1.65 anton 958: ;s ( R:w -- ) gforth semis
1.22 crook 959: ""The primitive compiled by @code{EXIT}.""
1.65 anton 960: SET_IP((Xt *)w);
1.1 anton 961:
1.83 pazsan 962: \g stack
963:
1.65 anton 964: >r ( w -- R:w ) core to_r
1.1 anton 965: :
966: (>r) ;
967: : (>r) rp@ cell+ @ rp@ ! rp@ cell+ ! ;
968:
1.65 anton 969: r> ( R:w -- w ) core r_from
1.1 anton 970: :
971: rp@ cell+ @ rp@ @ rp@ cell+ ! (rdrop) rp@ ! ;
972: Create (rdrop) ' ;s A,
973:
1.65 anton 974: rdrop ( R:w -- ) gforth
1.1 anton 975: :
976: r> r> drop >r ;
977:
1.65 anton 978: 2>r ( w1 w2 -- R:w1 R:w2 ) core-ext two_to_r
1.1 anton 979: :
980: swap r> swap >r swap >r >r ;
981:
1.65 anton 982: 2r> ( R:w1 R:w2 -- w1 w2 ) core-ext two_r_from
1.1 anton 983: :
984: r> r> swap r> swap >r swap ;
985:
1.65 anton 986: 2r@ ( R:w1 R:w2 -- R:w1 R:w2 w1 w2 ) core-ext two_r_fetch
1.1 anton 987: :
988: i' j ;
989:
1.65 anton 990: 2rdrop ( R:w1 R:w2 -- ) gforth two_r_drop
1.1 anton 991: :
992: r> r> drop r> drop >r ;
993:
1.47 anton 994: over ( w1 w2 -- w1 w2 w1 ) core
1.1 anton 995: :
996: sp@ cell+ @ ;
997:
1.47 anton 998: drop ( w -- ) core
1.1 anton 999: :
1000: IF THEN ;
1001:
1.47 anton 1002: swap ( w1 w2 -- w2 w1 ) core
1.1 anton 1003: :
1004: >r (swap) ! r> (swap) @ ;
1005: Variable (swap)
1006:
1.47 anton 1007: dup ( w -- w w ) core dupe
1.1 anton 1008: :
1009: sp@ @ ;
1010:
1.47 anton 1011: rot ( w1 w2 w3 -- w2 w3 w1 ) core rote
1.1 anton 1012: :
1013: [ defined? (swap) [IF] ]
1014: (swap) ! (rot) ! >r (rot) @ (swap) @ r> ;
1015: Variable (rot)
1016: [ELSE] ]
1017: >r swap r> swap ;
1018: [THEN]
1019:
1.47 anton 1020: -rot ( w1 w2 w3 -- w3 w1 w2 ) gforth not_rote
1.1 anton 1021: :
1022: rot rot ;
1023:
1.47 anton 1024: nip ( w1 w2 -- w2 ) core-ext
1.1 anton 1025: :
1.6 jwilke 1026: swap drop ;
1.1 anton 1027:
1.47 anton 1028: tuck ( w1 w2 -- w2 w1 w2 ) core-ext
1.1 anton 1029: :
1030: swap over ;
1031:
1.47 anton 1032: ?dup ( w -- w ) core question_dupe
1.52 anton 1033: ""Actually the stack effect is: @code{( w -- 0 | w w )}. It performs a
1034: @code{dup} if w is nonzero.""
1.1 anton 1035: if (w!=0) {
1.64 anton 1036: IF_spTOS(*sp-- = w;)
1.1 anton 1037: #ifndef USE_TOS
1038: *--sp = w;
1039: #endif
1040: }
1041: :
1042: dup IF dup THEN ;
1043:
1.47 anton 1044: pick ( u -- w ) core-ext
1.52 anton 1045: ""Actually the stack effect is @code{ x0 ... xu u -- x0 ... xu x0 }.""
1.1 anton 1046: w = sp[u+1];
1047: :
1048: 1+ cells sp@ + @ ;
1049:
1.47 anton 1050: 2drop ( w1 w2 -- ) core two_drop
1.1 anton 1051: :
1052: drop drop ;
1053:
1.47 anton 1054: 2dup ( w1 w2 -- w1 w2 w1 w2 ) core two_dupe
1.1 anton 1055: :
1056: over over ;
1057:
1.47 anton 1058: 2over ( w1 w2 w3 w4 -- w1 w2 w3 w4 w1 w2 ) core two_over
1.1 anton 1059: :
1060: 3 pick 3 pick ;
1061:
1.47 anton 1062: 2swap ( w1 w2 w3 w4 -- w3 w4 w1 w2 ) core two_swap
1.1 anton 1063: :
1064: rot >r rot r> ;
1065:
1.47 anton 1066: 2rot ( w1 w2 w3 w4 w5 w6 -- w3 w4 w5 w6 w1 w2 ) double-ext two_rote
1.1 anton 1067: :
1068: >r >r 2swap r> r> 2swap ;
1069:
1.47 anton 1070: 2nip ( w1 w2 w3 w4 -- w3 w4 ) gforth two_nip
1.1 anton 1071: :
1072: 2swap 2drop ;
1073:
1.47 anton 1074: 2tuck ( w1 w2 w3 w4 -- w3 w4 w1 w2 w3 w4 ) gforth two_tuck
1.1 anton 1075: :
1076: 2swap 2over ;
1077:
1078: \ toggle is high-level: 0.11/0.42%
1079:
1.47 anton 1080: @ ( a_addr -- w ) core fetch
1.52 anton 1081: ""@i{w} is the cell stored at @i{a_addr}.""
1.1 anton 1082: w = *a_addr;
1083:
1.47 anton 1084: ! ( w a_addr -- ) core store
1.52 anton 1085: ""Store @i{w} into the cell at @i{a-addr}.""
1.1 anton 1086: *a_addr = w;
1087:
1.47 anton 1088: +! ( n a_addr -- ) core plus_store
1.52 anton 1089: ""Add @i{n} to the cell at @i{a-addr}.""
1.1 anton 1090: *a_addr += n;
1091: :
1092: tuck @ + swap ! ;
1093:
1.47 anton 1094: c@ ( c_addr -- c ) core c_fetch
1.52 anton 1095: ""@i{c} is the char stored at @i{c_addr}.""
1.1 anton 1096: c = *c_addr;
1097: :
1098: [ bigendian [IF] ]
1099: [ cell>bit 4 = [IF] ]
1100: dup [ 0 cell - ] Literal and @ swap 1 and
1101: IF $FF and ELSE 8>> THEN ;
1102: [ [ELSE] ]
1103: dup [ cell 1- ] literal and
1104: tuck - @ swap [ cell 1- ] literal xor
1105: 0 ?DO 8>> LOOP $FF and
1106: [ [THEN] ]
1107: [ [ELSE] ]
1108: [ cell>bit 4 = [IF] ]
1109: dup [ 0 cell - ] Literal and @ swap 1 and
1110: IF 8>> ELSE $FF and THEN
1111: [ [ELSE] ]
1112: dup [ cell 1- ] literal and
1113: tuck - @ swap
1114: 0 ?DO 8>> LOOP 255 and
1115: [ [THEN] ]
1116: [ [THEN] ]
1117: ;
1118: : 8>> 2/ 2/ 2/ 2/ 2/ 2/ 2/ 2/ ;
1119:
1.47 anton 1120: c! ( c c_addr -- ) core c_store
1.52 anton 1121: ""Store @i{c} into the char at @i{c-addr}.""
1.1 anton 1122: *c_addr = c;
1123: :
1124: [ bigendian [IF] ]
1125: [ cell>bit 4 = [IF] ]
1126: tuck 1 and IF $FF and ELSE 8<< THEN >r
1127: dup -2 and @ over 1 and cells masks + @ and
1128: r> or swap -2 and ! ;
1129: Create masks $00FF , $FF00 ,
1130: [ELSE] ]
1131: dup [ cell 1- ] literal and dup
1132: [ cell 1- ] literal xor >r
1133: - dup @ $FF r@ 0 ?DO 8<< LOOP invert and
1134: rot $FF and r> 0 ?DO 8<< LOOP or swap ! ;
1135: [THEN]
1136: [ELSE] ]
1137: [ cell>bit 4 = [IF] ]
1138: tuck 1 and IF 8<< ELSE $FF and THEN >r
1139: dup -2 and @ over 1 and cells masks + @ and
1140: r> or swap -2 and ! ;
1141: Create masks $FF00 , $00FF ,
1142: [ELSE] ]
1143: dup [ cell 1- ] literal and dup >r
1144: - dup @ $FF r@ 0 ?DO 8<< LOOP invert and
1145: rot $FF and r> 0 ?DO 8<< LOOP or swap ! ;
1146: [THEN]
1147: [THEN]
1148: : 8<< 2* 2* 2* 2* 2* 2* 2* 2* ;
1149:
1.47 anton 1150: 2! ( w1 w2 a_addr -- ) core two_store
1.52 anton 1151: ""Store @i{w2} into the cell at @i{c-addr} and @i{w1} into the next cell.""
1.1 anton 1152: a_addr[0] = w2;
1153: a_addr[1] = w1;
1154: :
1155: tuck ! cell+ ! ;
1156:
1.47 anton 1157: 2@ ( a_addr -- w1 w2 ) core two_fetch
1.52 anton 1158: ""@i{w2} is the content of the cell stored at @i{a-addr}, @i{w1} is
1159: the content of the next cell.""
1.1 anton 1160: w2 = a_addr[0];
1161: w1 = a_addr[1];
1162: :
1163: dup cell+ @ swap @ ;
1164:
1.47 anton 1165: cell+ ( a_addr1 -- a_addr2 ) core cell_plus
1.52 anton 1166: ""@code{1 cells +}""
1.1 anton 1167: a_addr2 = a_addr1+1;
1168: :
1169: cell + ;
1170:
1.47 anton 1171: cells ( n1 -- n2 ) core
1.52 anton 1172: "" @i{n2} is the number of address units of @i{n1} cells.""
1.1 anton 1173: n2 = n1 * sizeof(Cell);
1174: :
1175: [ cell
1176: 2/ dup [IF] ] 2* [ [THEN]
1177: 2/ dup [IF] ] 2* [ [THEN]
1178: 2/ dup [IF] ] 2* [ [THEN]
1179: 2/ dup [IF] ] 2* [ [THEN]
1180: drop ] ;
1181:
1.47 anton 1182: char+ ( c_addr1 -- c_addr2 ) core char_plus
1.52 anton 1183: ""@code{1 chars +}.""
1.1 anton 1184: c_addr2 = c_addr1 + 1;
1185: :
1186: 1+ ;
1187:
1.47 anton 1188: (chars) ( n1 -- n2 ) gforth paren_chars
1.1 anton 1189: n2 = n1 * sizeof(Char);
1190: :
1191: ;
1192:
1.47 anton 1193: count ( c_addr1 -- c_addr2 u ) core
1.56 anton 1194: ""@i{c-addr2} is the first character and @i{u} the length of the
1195: counted string at @i{c-addr1}.""
1.1 anton 1196: u = *c_addr1;
1197: c_addr2 = c_addr1+1;
1198: :
1199: dup 1+ swap c@ ;
1200:
1.47 anton 1201: (f83find) ( c_addr u f83name1 -- f83name2 ) new paren_f83find
1.13 pazsan 1202: for (; f83name1 != NULL; f83name1 = (struct F83Name *)(f83name1->next))
1.1 anton 1203: if ((UCell)F83NAME_COUNT(f83name1)==u &&
1204: memcasecmp(c_addr, f83name1->name, u)== 0 /* or inline? */)
1205: break;
1206: f83name2=f83name1;
1207: :
1208: BEGIN dup WHILE (find-samelen) dup WHILE
1209: >r 2dup r@ cell+ char+ capscomp 0=
1210: IF 2drop r> EXIT THEN
1211: r> @
1212: REPEAT THEN nip nip ;
1213: : (find-samelen) ( u f83name1 -- u f83name2/0 )
1.72 pazsan 1214: BEGIN 2dup cell+ c@ $1F and <> WHILE @ dup 0= UNTIL THEN ;
1.1 anton 1215:
1.15 pazsan 1216: \+hash
1.1 anton 1217:
1.47 anton 1218: (hashfind) ( c_addr u a_addr -- f83name2 ) new paren_hashfind
1.13 pazsan 1219: struct F83Name *f83name1;
1.1 anton 1220: f83name2=NULL;
1221: while(a_addr != NULL)
1222: {
1.13 pazsan 1223: f83name1=(struct F83Name *)(a_addr[1]);
1.1 anton 1224: a_addr=(Cell *)(a_addr[0]);
1225: if ((UCell)F83NAME_COUNT(f83name1)==u &&
1226: memcasecmp(c_addr, f83name1->name, u)== 0 /* or inline? */)
1227: {
1228: f83name2=f83name1;
1229: break;
1230: }
1231: }
1232: :
1233: BEGIN dup WHILE
1234: 2@ >r >r dup r@ cell+ c@ $1F and =
1235: IF 2dup r@ cell+ char+ capscomp 0=
1236: IF 2drop r> rdrop EXIT THEN THEN
1237: rdrop r>
1238: REPEAT nip nip ;
1239:
1.47 anton 1240: (tablefind) ( c_addr u a_addr -- f83name2 ) new paren_tablefind
1.1 anton 1241: ""A case-sensitive variant of @code{(hashfind)}""
1.13 pazsan 1242: struct F83Name *f83name1;
1.1 anton 1243: f83name2=NULL;
1244: while(a_addr != NULL)
1245: {
1.13 pazsan 1246: f83name1=(struct F83Name *)(a_addr[1]);
1.1 anton 1247: a_addr=(Cell *)(a_addr[0]);
1248: if ((UCell)F83NAME_COUNT(f83name1)==u &&
1249: memcmp(c_addr, f83name1->name, u)== 0 /* or inline? */)
1250: {
1251: f83name2=f83name1;
1252: break;
1253: }
1254: }
1255: :
1256: BEGIN dup WHILE
1257: 2@ >r >r dup r@ cell+ c@ $1F and =
1258: IF 2dup r@ cell+ char+ -text 0=
1259: IF 2drop r> rdrop EXIT THEN THEN
1260: rdrop r>
1261: REPEAT nip nip ;
1262:
1.47 anton 1263: (hashkey) ( c_addr u1 -- u2 ) gforth paren_hashkey
1.1 anton 1264: u2=0;
1265: while(u1--)
1266: u2+=(Cell)toupper(*c_addr++);
1267: :
1268: 0 -rot bounds ?DO I c@ toupper + LOOP ;
1269:
1.47 anton 1270: (hashkey1) ( c_addr u ubits -- ukey ) gforth paren_hashkey1
1.1 anton 1271: ""ukey is the hash key for the string c_addr u fitting in ubits bits""
1272: /* this hash function rotates the key at every step by rot bits within
1273: ubits bits and xors it with the character. This function does ok in
1274: the chi-sqare-test. Rot should be <=7 (preferably <=5) for
1275: ASCII strings (larger if ubits is large), and should share no
1276: divisors with ubits.
1277: */
1278: unsigned rot = ((char []){5,0,1,2,3,4,5,5,5,5,3,5,5,5,5,7,5,5,5,5,7,5,5,5,5,6,5,5,5,5,7,5,5})[ubits];
1279: Char *cp = c_addr;
1280: for (ukey=0; cp<c_addr+u; cp++)
1281: ukey = ((((ukey<<rot) | (ukey>>(ubits-rot)))
1282: ^ toupper(*cp))
1283: & ((1<<ubits)-1));
1284: :
1285: dup rot-values + c@ over 1 swap lshift 1- >r
1286: tuck - 2swap r> 0 2swap bounds
1287: ?DO dup 4 pick lshift swap 3 pick rshift or
1288: I c@ toupper xor
1289: over and LOOP
1290: nip nip nip ;
1291: Create rot-values
1292: 5 c, 0 c, 1 c, 2 c, 3 c, 4 c, 5 c, 5 c, 5 c, 5 c,
1293: 3 c, 5 c, 5 c, 5 c, 5 c, 7 c, 5 c, 5 c, 5 c, 5 c,
1294: 7 c, 5 c, 5 c, 5 c, 5 c, 6 c, 5 c, 5 c, 5 c, 5 c,
1295: 7 c, 5 c, 5 c,
1296:
1.15 pazsan 1297: \+
1.1 anton 1298:
1.47 anton 1299: (parse-white) ( c_addr1 u1 -- c_addr2 u2 ) gforth paren_parse_white
1.1 anton 1300: /* use !isgraph instead of isspace? */
1301: Char *endp = c_addr1+u1;
1302: while (c_addr1<endp && isspace(*c_addr1))
1303: c_addr1++;
1304: if (c_addr1<endp) {
1305: for (c_addr2 = c_addr1; c_addr1<endp && !isspace(*c_addr1); c_addr1++)
1306: ;
1307: u2 = c_addr1-c_addr2;
1308: }
1309: else {
1310: c_addr2 = c_addr1;
1311: u2 = 0;
1312: }
1313: :
1314: BEGIN dup WHILE over c@ bl <= WHILE 1 /string
1315: REPEAT THEN 2dup
1316: BEGIN dup WHILE over c@ bl > WHILE 1 /string
1317: REPEAT THEN nip - ;
1318:
1.47 anton 1319: aligned ( c_addr -- a_addr ) core
1.29 crook 1320: "" @i{a-addr} is the first aligned address greater than or equal to @i{c-addr}.""
1.1 anton 1321: a_addr = (Cell *)((((Cell)c_addr)+(sizeof(Cell)-1))&(-sizeof(Cell)));
1322: :
1323: [ cell 1- ] Literal + [ -1 cells ] Literal and ;
1324:
1.47 anton 1325: faligned ( c_addr -- f_addr ) float f_aligned
1.29 crook 1326: "" @i{f-addr} is the first float-aligned address greater than or equal to @i{c-addr}.""
1.1 anton 1327: f_addr = (Float *)((((Cell)c_addr)+(sizeof(Float)-1))&(-sizeof(Float)));
1328: :
1329: [ 1 floats 1- ] Literal + [ -1 floats ] Literal and ;
1330:
1.47 anton 1331: >body ( xt -- a_addr ) core to_body
1.40 crook 1332: "" Get the address of the body of the word represented by @i{xt} (the address
1333: of the word's data field).""
1.1 anton 1334: a_addr = PFA(xt);
1335: :
1336: 2 cells + ;
1337:
1.35 jwilke 1338: \ threading stuff is currently only interesting if we have a compiler
1339: \fhas? standardthreading has? compiler and [IF]
1.28 jwilke 1340:
1.47 anton 1341: >code-address ( xt -- c_addr ) gforth to_code_address
1.29 crook 1342: ""@i{c-addr} is the code address of the word @i{xt}.""
1.1 anton 1343: /* !! This behaves installation-dependently for DOES-words */
1344: c_addr = (Address)CODE_ADDRESS(xt);
1345: :
1346: @ ;
1347:
1.47 anton 1348: >does-code ( xt -- a_addr ) gforth to_does_code
1.58 anton 1349: ""If @i{xt} is the execution token of a child of a @code{DOES>} word,
1.29 crook 1350: @i{a-addr} is the start of the Forth code after the @code{DOES>};
1351: Otherwise @i{a-addr} is 0.""
1.1 anton 1352: a_addr = (Cell *)DOES_CODE(xt);
1353: :
1354: cell+ @ ;
1355:
1.47 anton 1356: code-address! ( c_addr xt -- ) gforth code_address_store
1.29 crook 1357: ""Create a code field with code address @i{c-addr} at @i{xt}.""
1.1 anton 1358: MAKE_CF(xt, c_addr);
1.10 anton 1359: CACHE_FLUSH(xt,(size_t)PFA(0));
1.1 anton 1360: :
1361: ! ;
1362:
1.47 anton 1363: does-code! ( a_addr xt -- ) gforth does_code_store
1.58 anton 1364: ""Create a code field at @i{xt} for a child of a @code{DOES>}-word;
1365: @i{a-addr} is the start of the Forth code after @code{DOES>}.""
1.1 anton 1366: MAKE_DOES_CF(xt, a_addr);
1.10 anton 1367: CACHE_FLUSH(xt,(size_t)PFA(0));
1.1 anton 1368: :
1369: dodoes: over ! cell+ ! ;
1370:
1.47 anton 1371: does-handler! ( a_addr -- ) gforth does_handler_store
1.58 anton 1372: ""Create a @code{DOES>}-handler at address @i{a-addr}. Normally,
1373: @i{a-addr} points just behind a @code{DOES>}.""
1.1 anton 1374: MAKE_DOES_HANDLER(a_addr);
1.10 anton 1375: CACHE_FLUSH((caddr_t)a_addr,DOES_HANDLER_SIZE);
1.1 anton 1376: :
1377: drop ;
1378:
1.47 anton 1379: /does-handler ( -- n ) gforth slash_does_handler
1.26 crook 1380: ""The size of a @code{DOES>}-handler (includes possible padding).""
1.1 anton 1381: /* !! a constant or environmental query might be better */
1382: n = DOES_HANDLER_SIZE;
1383: :
1384: 2 cells ;
1385:
1.47 anton 1386: threading-method ( -- n ) gforth threading_method
1.1 anton 1387: ""0 if the engine is direct threaded. Note that this may change during
1388: the lifetime of an image.""
1389: #if defined(DOUBLY_INDIRECT)
1390: n=2;
1391: #else
1392: # if defined(DIRECT_THREADED)
1393: n=0;
1394: # else
1395: n=1;
1396: # endif
1397: #endif
1398: :
1399: 1 ;
1.28 jwilke 1400:
1.35 jwilke 1401: \f[THEN]
1.1 anton 1402:
1.83 pazsan 1403: \g hostos
1404:
1.47 anton 1405: key-file ( wfileid -- n ) gforth paren_key_file
1.17 pazsan 1406: #ifdef HAS_FILE
1.1 anton 1407: fflush(stdout);
1.12 pazsan 1408: n = key((FILE*)wfileid);
1.17 pazsan 1409: #else
1410: n = key(stdin);
1411: #endif
1.1 anton 1412:
1.47 anton 1413: key?-file ( wfileid -- n ) facility key_q_file
1.17 pazsan 1414: #ifdef HAS_FILE
1.1 anton 1415: fflush(stdout);
1.12 pazsan 1416: n = key_query((FILE*)wfileid);
1.17 pazsan 1417: #else
1418: n = key_query(stdin);
1419: #endif
1420:
1421: \+os
1.12 pazsan 1422:
1.47 anton 1423: stdin ( -- wfileid ) gforth
1.12 pazsan 1424: wfileid = (Cell)stdin;
1.1 anton 1425:
1.47 anton 1426: stdout ( -- wfileid ) gforth
1.1 anton 1427: wfileid = (Cell)stdout;
1428:
1.47 anton 1429: stderr ( -- wfileid ) gforth
1.1 anton 1430: wfileid = (Cell)stderr;
1431:
1.47 anton 1432: form ( -- urows ucols ) gforth
1.1 anton 1433: ""The number of lines and columns in the terminal. These numbers may change
1434: with the window size.""
1435: /* we could block SIGWINCH here to get a consistent size, but I don't
1436: think this is necessary or always beneficial */
1437: urows=rows;
1438: ucols=cols;
1439:
1.47 anton 1440: flush-icache ( c_addr u -- ) gforth flush_icache
1.1 anton 1441: ""Make sure that the instruction cache of the processor (if there is
1.29 crook 1442: one) does not contain stale data at @i{c-addr} and @i{u} bytes
1.1 anton 1443: afterwards. @code{END-CODE} performs a @code{flush-icache}
1444: automatically. Caveat: @code{flush-icache} might not work on your
1445: installation; this is usually the case if direct threading is not
1446: supported on your machine (take a look at your @file{machine.h}) and
1447: your machine has a separate instruction cache. In such cases,
1448: @code{flush-icache} does nothing instead of flushing the instruction
1449: cache.""
1450: FLUSH_ICACHE(c_addr,u);
1451:
1.47 anton 1452: (bye) ( n -- ) gforth paren_bye
1.77 anton 1453: SUPER_END;
1.1 anton 1454: return (Label *)n;
1455:
1.47 anton 1456: (system) ( c_addr u -- wretval wior ) gforth peren_system
1.20 pazsan 1457: #ifndef MSDOS
1.1 anton 1458: int old_tp=terminal_prepped;
1459: deprep_terminal();
1.20 pazsan 1460: #endif
1.1 anton 1461: wretval=system(cstr(c_addr,u,1)); /* ~ expansion on first part of string? */
1462: wior = IOR(wretval==-1 || (wretval==127 && errno != 0));
1.20 pazsan 1463: #ifndef MSDOS
1.1 anton 1464: if (old_tp)
1465: prep_terminal();
1.20 pazsan 1466: #endif
1.1 anton 1467:
1.47 anton 1468: getenv ( c_addr1 u1 -- c_addr2 u2 ) gforth
1.29 crook 1469: ""The string @i{c-addr1 u1} specifies an environment variable. The string @i{c-addr2 u2}
1.24 crook 1470: is the host operating system's expansion of that environment variable. If the
1.29 crook 1471: environment variable does not exist, @i{c-addr2 u2} specifies a string 0 characters
1.24 crook 1472: in length.""
1.46 pazsan 1473: /* close ' to keep fontify happy */
1.1 anton 1474: c_addr2 = getenv(cstr(c_addr1,u1,1));
1475: u2 = (c_addr2 == NULL ? 0 : strlen(c_addr2));
1476:
1.56 anton 1477: open-pipe ( c_addr u wfam -- wfileid wior ) gforth open_pipe
1.84 pazsan 1478: wfileid=(Cell)popen(cstr(c_addr,u,1),pfileattr[wfam]); /* ~ expansion of 1st arg? */
1.1 anton 1479: wior = IOR(wfileid==0); /* !! the man page says that errno is not set reliably */
1480:
1.47 anton 1481: close-pipe ( wfileid -- wretval wior ) gforth close_pipe
1.1 anton 1482: wretval = pclose((FILE *)wfileid);
1483: wior = IOR(wretval==-1);
1484:
1.47 anton 1485: time&date ( -- nsec nmin nhour nday nmonth nyear ) facility-ext time_and_date
1.44 crook 1486: ""Report the current time of day. Seconds, minutes and hours are numbered from 0.
1487: Months are numbered from 1.""
1.1 anton 1488: struct timeval time1;
1489: struct timezone zone1;
1490: struct tm *ltime;
1491: gettimeofday(&time1,&zone1);
1.51 anton 1492: /* !! Single Unix specification:
1493: If tzp is not a null pointer, the behaviour is unspecified. */
1.1 anton 1494: ltime=localtime((time_t *)&time1.tv_sec);
1495: nyear =ltime->tm_year+1900;
1496: nmonth=ltime->tm_mon+1;
1497: nday =ltime->tm_mday;
1498: nhour =ltime->tm_hour;
1499: nmin =ltime->tm_min;
1500: nsec =ltime->tm_sec;
1501:
1.47 anton 1502: ms ( n -- ) facility-ext
1.44 crook 1503: ""Wait at least @i{n} milli-second.""
1.1 anton 1504: struct timeval timeout;
1505: timeout.tv_sec=n/1000;
1506: timeout.tv_usec=1000*(n%1000);
1507: (void)select(0,0,0,0,&timeout);
1508:
1.47 anton 1509: allocate ( u -- a_addr wior ) memory
1.29 crook 1510: ""Allocate @i{u} address units of contiguous data space. The initial
1.27 crook 1511: contents of the data space is undefined. If the allocation is successful,
1.29 crook 1512: @i{a-addr} is the start address of the allocated region and @i{wior}
1513: is 0. If the allocation fails, @i{a-addr} is undefined and @i{wior}
1.52 anton 1514: is a non-zero I/O result code.""
1.1 anton 1515: a_addr = (Cell *)malloc(u?u:1);
1516: wior = IOR(a_addr==NULL);
1517:
1.47 anton 1518: free ( a_addr -- wior ) memory
1.29 crook 1519: ""Return the region of data space starting at @i{a-addr} to the system.
1.52 anton 1520: The region must originally have been obtained using @code{allocate} or
1.29 crook 1521: @code{resize}. If the operational is successful, @i{wior} is 0.
1.52 anton 1522: If the operation fails, @i{wior} is a non-zero I/O result code.""
1.1 anton 1523: free(a_addr);
1524: wior = 0;
1525:
1.47 anton 1526: resize ( a_addr1 u -- a_addr2 wior ) memory
1.26 crook 1527: ""Change the size of the allocated area at @i{a-addr1} to @i{u}
1.1 anton 1528: address units, possibly moving the contents to a different
1.27 crook 1529: area. @i{a-addr2} is the address of the resulting area.
1.52 anton 1530: If the operation is successful, @i{wior} is 0.
1531: If the operation fails, @i{wior} is a non-zero
1.29 crook 1532: I/O result code. If @i{a-addr1} is 0, Gforth's (but not the Standard)
1.27 crook 1533: @code{resize} @code{allocate}s @i{u} address units.""
1.1 anton 1534: /* the following check is not necessary on most OSs, but it is needed
1535: on SunOS 4.1.2. */
1.46 pazsan 1536: /* close ' to keep fontify happy */
1.1 anton 1537: if (a_addr1==NULL)
1538: a_addr2 = (Cell *)malloc(u);
1539: else
1540: a_addr2 = (Cell *)realloc(a_addr1, u);
1541: wior = IOR(a_addr2==NULL); /* !! Define a return code */
1542:
1.47 anton 1543: strerror ( n -- c_addr u ) gforth
1.1 anton 1544: c_addr = strerror(n);
1545: u = strlen(c_addr);
1546:
1.47 anton 1547: strsignal ( n -- c_addr u ) gforth
1.1 anton 1548: c_addr = strsignal(n);
1549: u = strlen(c_addr);
1550:
1.47 anton 1551: call-c ( w -- ) gforth call_c
1.1 anton 1552: ""Call the C function pointed to by @i{w}. The C function has to
1553: access the stack itself. The stack pointers are exported in the global
1554: variables @code{SP} and @code{FP}.""
1555: /* This is a first attempt at support for calls to C. This may change in
1556: the future */
1.64 anton 1557: IF_fpTOS(fp[0]=fpTOS);
1.1 anton 1558: FP=fp;
1559: SP=sp;
1560: ((void (*)())w)();
1561: sp=SP;
1562: fp=FP;
1.64 anton 1563: IF_spTOS(spTOS=sp[0]);
1564: IF_fpTOS(fpTOS=fp[0]);
1.1 anton 1565:
1.15 pazsan 1566: \+
1567: \+file
1.1 anton 1568:
1.47 anton 1569: close-file ( wfileid -- wior ) file close_file
1.1 anton 1570: wior = IOR(fclose((FILE *)wfileid)==EOF);
1571:
1.56 anton 1572: open-file ( c_addr u wfam -- wfileid wior ) file open_file
1573: wfileid = (Cell)fopen(tilde_cstr(c_addr, u, 1), fileattr[wfam]);
1.22 crook 1574: wior = IOR(wfileid == 0);
1.1 anton 1575:
1.56 anton 1576: create-file ( c_addr u wfam -- wfileid wior ) file create_file
1.1 anton 1577: Cell fd;
1.56 anton 1578: fd = open(tilde_cstr(c_addr, u, 1), O_CREAT|O_TRUNC|ufileattr[wfam], 0666);
1.1 anton 1579: if (fd != -1) {
1.56 anton 1580: wfileid = (Cell)fdopen(fd, fileattr[wfam]);
1.22 crook 1581: wior = IOR(wfileid == 0);
1.1 anton 1582: } else {
1.22 crook 1583: wfileid = 0;
1.1 anton 1584: wior = IOR(1);
1585: }
1586:
1.47 anton 1587: delete-file ( c_addr u -- wior ) file delete_file
1.1 anton 1588: wior = IOR(unlink(tilde_cstr(c_addr, u, 1))==-1);
1589:
1.47 anton 1590: rename-file ( c_addr1 u1 c_addr2 u2 -- wior ) file-ext rename_file
1.29 crook 1591: ""Rename file @i{c_addr1 u1} to new name @i{c_addr2 u2}""
1.1 anton 1592: char *s1=tilde_cstr(c_addr2, u2, 1);
1593: wior = IOR(rename(tilde_cstr(c_addr1, u1, 0), s1)==-1);
1594:
1.47 anton 1595: file-position ( wfileid -- ud wior ) file file_position
1.1 anton 1596: /* !! use tell and lseek? */
1597: ud = LONG2UD(ftell((FILE *)wfileid));
1598: wior = IOR(UD2LONG(ud)==-1);
1599:
1.47 anton 1600: reposition-file ( ud wfileid -- wior ) file reposition_file
1.1 anton 1601: wior = IOR(fseek((FILE *)wfileid, UD2LONG(ud), SEEK_SET)==-1);
1602:
1.47 anton 1603: file-size ( wfileid -- ud wior ) file file_size
1.1 anton 1604: struct stat buf;
1605: wior = IOR(fstat(fileno((FILE *)wfileid), &buf)==-1);
1606: ud = LONG2UD(buf.st_size);
1607:
1.47 anton 1608: resize-file ( ud wfileid -- wior ) file resize_file
1.1 anton 1609: wior = IOR(ftruncate(fileno((FILE *)wfileid), UD2LONG(ud))==-1);
1610:
1.47 anton 1611: read-file ( c_addr u1 wfileid -- u2 wior ) file read_file
1.1 anton 1612: /* !! fread does not guarantee enough */
1613: u2 = fread(c_addr, sizeof(Char), u1, (FILE *)wfileid);
1614: wior = FILEIO(u2<u1 && ferror((FILE *)wfileid));
1615: /* !! is the value of ferror errno-compatible? */
1616: if (wior)
1617: clearerr((FILE *)wfileid);
1618:
1.60 pazsan 1619: read-line ( c_addr u1 wfileid -- u2 flag wior ) file read_line
1.85 anton 1620: /* this may one day be replaced with : read-line (read-line) nip ; */
1.1 anton 1621: Cell c;
1622: flag=-1;
1623: for(u2=0; u2<u1; u2++)
1624: {
1.45 anton 1625: c = getc((FILE *)wfileid);
1626: if (c=='\n') break;
1627: if (c=='\r') {
1628: if ((c = getc((FILE *)wfileid))!='\n')
1629: ungetc(c,(FILE *)wfileid);
1630: break;
1631: }
1632: if (c==EOF) {
1.1 anton 1633: flag=FLAG(u2!=0);
1634: break;
1635: }
1.45 anton 1636: c_addr[u2] = (Char)c;
1.1 anton 1637: }
1638: wior=FILEIO(ferror((FILE *)wfileid));
1639:
1.15 pazsan 1640: \+
1.1 anton 1641:
1.47 anton 1642: write-file ( c_addr u1 wfileid -- wior ) file write_file
1.1 anton 1643: /* !! fwrite does not guarantee enough */
1.39 pazsan 1644: #ifdef HAS_FILE
1.1 anton 1645: {
1646: UCell u2 = fwrite(c_addr, sizeof(Char), u1, (FILE *)wfileid);
1647: wior = FILEIO(u2<u1 && ferror((FILE *)wfileid));
1648: if (wior)
1649: clearerr((FILE *)wfileid);
1650: }
1.39 pazsan 1651: #else
1652: TYPE(c_addr, u1);
1653: #endif
1.17 pazsan 1654:
1.47 anton 1655: emit-file ( c wfileid -- wior ) gforth emit_file
1.17 pazsan 1656: #ifdef HAS_FILE
1.1 anton 1657: wior = FILEIO(putc(c, (FILE *)wfileid)==EOF);
1658: if (wior)
1659: clearerr((FILE *)wfileid);
1.17 pazsan 1660: #else
1.36 pazsan 1661: PUTC(c);
1.17 pazsan 1662: #endif
1.1 anton 1663:
1.15 pazsan 1664: \+file
1.1 anton 1665:
1.47 anton 1666: flush-file ( wfileid -- wior ) file-ext flush_file
1.1 anton 1667: wior = IOR(fflush((FILE *) wfileid)==EOF);
1668:
1.56 anton 1669: file-status ( c_addr u -- wfam wior ) file-ext file_status
1.1 anton 1670: char *filename=tilde_cstr(c_addr, u, 1);
1671: if (access (filename, F_OK) != 0) {
1.56 anton 1672: wfam=0;
1.1 anton 1673: wior=IOR(1);
1674: }
1675: else if (access (filename, R_OK | W_OK) == 0) {
1.56 anton 1676: wfam=2; /* r/w */
1.1 anton 1677: wior=0;
1678: }
1679: else if (access (filename, R_OK) == 0) {
1.56 anton 1680: wfam=0; /* r/o */
1.1 anton 1681: wior=0;
1682: }
1683: else if (access (filename, W_OK) == 0) {
1.56 anton 1684: wfam=4; /* w/o */
1.1 anton 1685: wior=0;
1686: }
1687: else {
1.56 anton 1688: wfam=1; /* well, we cannot access the file, but better deliver a legal
1.1 anton 1689: access mode (r/o bin), so we get a decent error later upon open. */
1690: wior=0;
1691: }
1692:
1.15 pazsan 1693: \+
1694: \+floating
1.1 anton 1695:
1.83 pazsan 1696: \g floating
1697:
1.1 anton 1698: comparisons(f, r1 r2, f_, r1, r2, gforth, gforth, float, gforth)
1699: comparisons(f0, r, f_zero_, r, 0., float, gforth, float, gforth)
1700:
1.47 anton 1701: d>f ( d -- r ) float d_to_f
1.1 anton 1702: #ifdef BUGGY_LONG_LONG
1703: extern double ldexp(double x, int exp);
1704: r = ldexp((Float)d.hi,CELL_BITS) + (Float)d.lo;
1705: #else
1706: r = d;
1707: #endif
1708:
1.47 anton 1709: f>d ( r -- d ) float f_to_d
1.1 anton 1710: #ifdef BUGGY_LONG_LONG
1.21 anton 1711: d.hi = ldexp(r,-(int)(CELL_BITS)) - (r<0);
1.1 anton 1712: d.lo = r-ldexp((Float)d.hi,CELL_BITS);
1713: #else
1714: d = r;
1715: #endif
1716:
1.47 anton 1717: f! ( r f_addr -- ) float f_store
1.52 anton 1718: ""Store @i{r} into the float at address @i{f-addr}.""
1.1 anton 1719: *f_addr = r;
1720:
1.47 anton 1721: f@ ( f_addr -- r ) float f_fetch
1.52 anton 1722: ""@i{r} is the float at address @i{f-addr}.""
1.1 anton 1723: r = *f_addr;
1724:
1.47 anton 1725: df@ ( df_addr -- r ) float-ext d_f_fetch
1.52 anton 1726: ""Fetch the double-precision IEEE floating-point value @i{r} from the address @i{df-addr}.""
1.1 anton 1727: #ifdef IEEE_FP
1728: r = *df_addr;
1729: #else
1730: !! df@
1731: #endif
1732:
1.47 anton 1733: df! ( r df_addr -- ) float-ext d_f_store
1.52 anton 1734: ""Store @i{r} as double-precision IEEE floating-point value to the
1735: address @i{df-addr}.""
1.1 anton 1736: #ifdef IEEE_FP
1737: *df_addr = r;
1738: #else
1739: !! df!
1740: #endif
1741:
1.47 anton 1742: sf@ ( sf_addr -- r ) float-ext s_f_fetch
1.52 anton 1743: ""Fetch the single-precision IEEE floating-point value @i{r} from the address @i{sf-addr}.""
1.1 anton 1744: #ifdef IEEE_FP
1745: r = *sf_addr;
1746: #else
1747: !! sf@
1748: #endif
1749:
1.47 anton 1750: sf! ( r sf_addr -- ) float-ext s_f_store
1.52 anton 1751: ""Store @i{r} as single-precision IEEE floating-point value to the
1752: address @i{sf-addr}.""
1.1 anton 1753: #ifdef IEEE_FP
1754: *sf_addr = r;
1755: #else
1756: !! sf!
1757: #endif
1758:
1.47 anton 1759: f+ ( r1 r2 -- r3 ) float f_plus
1.1 anton 1760: r3 = r1+r2;
1761:
1.47 anton 1762: f- ( r1 r2 -- r3 ) float f_minus
1.1 anton 1763: r3 = r1-r2;
1764:
1.47 anton 1765: f* ( r1 r2 -- r3 ) float f_star
1.1 anton 1766: r3 = r1*r2;
1767:
1.47 anton 1768: f/ ( r1 r2 -- r3 ) float f_slash
1.1 anton 1769: r3 = r1/r2;
1770:
1.47 anton 1771: f** ( r1 r2 -- r3 ) float-ext f_star_star
1.26 crook 1772: ""@i{r3} is @i{r1} raised to the @i{r2}th power.""
1.1 anton 1773: r3 = pow(r1,r2);
1774:
1.47 anton 1775: fnegate ( r1 -- r2 ) float f_negate
1.1 anton 1776: r2 = - r1;
1777:
1.47 anton 1778: fdrop ( r -- ) float f_drop
1.1 anton 1779:
1.47 anton 1780: fdup ( r -- r r ) float f_dupe
1.1 anton 1781:
1.47 anton 1782: fswap ( r1 r2 -- r2 r1 ) float f_swap
1.1 anton 1783:
1.47 anton 1784: fover ( r1 r2 -- r1 r2 r1 ) float f_over
1.1 anton 1785:
1.47 anton 1786: frot ( r1 r2 r3 -- r2 r3 r1 ) float f_rote
1.1 anton 1787:
1.47 anton 1788: fnip ( r1 r2 -- r2 ) gforth f_nip
1.1 anton 1789:
1.47 anton 1790: ftuck ( r1 r2 -- r2 r1 r2 ) gforth f_tuck
1.1 anton 1791:
1.47 anton 1792: float+ ( f_addr1 -- f_addr2 ) float float_plus
1.52 anton 1793: ""@code{1 floats +}.""
1.1 anton 1794: f_addr2 = f_addr1+1;
1795:
1.47 anton 1796: floats ( n1 -- n2 ) float
1.52 anton 1797: ""@i{n2} is the number of address units of @i{n1} floats.""
1.1 anton 1798: n2 = n1*sizeof(Float);
1799:
1.47 anton 1800: floor ( r1 -- r2 ) float
1.26 crook 1801: ""Round towards the next smaller integral value, i.e., round toward negative infinity.""
1.1 anton 1802: /* !! unclear wording */
1803: r2 = floor(r1);
1804:
1.47 anton 1805: fround ( r1 -- r2 ) float f_round
1.26 crook 1806: ""Round to the nearest integral value.""
1.1 anton 1807: /* !! unclear wording */
1808: #ifdef HAVE_RINT
1809: r2 = rint(r1);
1810: #else
1811: r2 = floor(r1+0.5);
1812: /* !! This is not quite true to the rounding rules given in the standard */
1813: #endif
1814:
1.47 anton 1815: fmax ( r1 r2 -- r3 ) float f_max
1.1 anton 1816: if (r1<r2)
1817: r3 = r2;
1818: else
1819: r3 = r1;
1820:
1.47 anton 1821: fmin ( r1 r2 -- r3 ) float f_min
1.1 anton 1822: if (r1<r2)
1823: r3 = r1;
1824: else
1825: r3 = r2;
1826:
1.47 anton 1827: represent ( r c_addr u -- n f1 f2 ) float
1.1 anton 1828: char *sig;
1829: int flag;
1830: int decpt;
1831: sig=ecvt(r, u, &decpt, &flag);
1832: n=(r==0 ? 1 : decpt);
1833: f1=FLAG(flag!=0);
1.21 anton 1834: f2=FLAG(isdigit((unsigned)(sig[0]))!=0);
1.1 anton 1835: memmove(c_addr,sig,u);
1836:
1.47 anton 1837: >float ( c_addr u -- flag ) float to_float
1.56 anton 1838: ""Actual stack effect: ( c_addr u -- r t | f ). Attempt to convert the
1839: character string @i{c-addr u} to internal floating-point
1840: representation. If the string represents a valid floating-point number
1841: @i{r} is placed on the floating-point stack and @i{flag} is
1842: true. Otherwise, @i{flag} is false. A string of blanks is a special
1843: case and represents the floating-point number 0.""
1.1 anton 1844: /* real signature: c_addr u -- r t / f */
1845: Float r;
1846: char *number=cstr(c_addr, u, 1);
1847: char *endconv;
1.42 pazsan 1848: int sign = 0;
1849: if(number[0]=='-') {
1850: sign = 1;
1851: number++;
1852: u--;
1853: }
1.21 anton 1854: while(isspace((unsigned)(number[--u])) && u>0);
1.1 anton 1855: switch(number[u])
1856: {
1857: case 'd':
1858: case 'D':
1859: case 'e':
1860: case 'E': break;
1861: default : u++; break;
1862: }
1863: number[u]='\0';
1864: r=strtod(number,&endconv);
1865: if((flag=FLAG(!(Cell)*endconv)))
1866: {
1.64 anton 1867: IF_fpTOS(fp[0] = fpTOS);
1.1 anton 1868: fp += -1;
1.64 anton 1869: fpTOS = sign ? -r : r;
1.1 anton 1870: }
1871: else if(*endconv=='d' || *endconv=='D')
1872: {
1873: *endconv='E';
1874: r=strtod(number,&endconv);
1875: if((flag=FLAG(!(Cell)*endconv)))
1876: {
1.64 anton 1877: IF_fpTOS(fp[0] = fpTOS);
1.1 anton 1878: fp += -1;
1.64 anton 1879: fpTOS = sign ? -r : r;
1.1 anton 1880: }
1881: }
1882:
1.47 anton 1883: fabs ( r1 -- r2 ) float-ext f_abs
1.1 anton 1884: r2 = fabs(r1);
1885:
1.47 anton 1886: facos ( r1 -- r2 ) float-ext f_a_cos
1.1 anton 1887: r2 = acos(r1);
1888:
1.47 anton 1889: fasin ( r1 -- r2 ) float-ext f_a_sine
1.1 anton 1890: r2 = asin(r1);
1891:
1.47 anton 1892: fatan ( r1 -- r2 ) float-ext f_a_tan
1.1 anton 1893: r2 = atan(r1);
1894:
1.47 anton 1895: fatan2 ( r1 r2 -- r3 ) float-ext f_a_tan_two
1.26 crook 1896: ""@i{r1/r2}=tan(@i{r3}). ANS Forth does not require, but probably
1.1 anton 1897: intends this to be the inverse of @code{fsincos}. In gforth it is.""
1898: r3 = atan2(r1,r2);
1899:
1.47 anton 1900: fcos ( r1 -- r2 ) float-ext f_cos
1.1 anton 1901: r2 = cos(r1);
1902:
1.47 anton 1903: fexp ( r1 -- r2 ) float-ext f_e_x_p
1.1 anton 1904: r2 = exp(r1);
1905:
1.47 anton 1906: fexpm1 ( r1 -- r2 ) float-ext f_e_x_p_m_one
1.1 anton 1907: ""@i{r2}=@i{e}**@i{r1}@minus{}1""
1908: #ifdef HAVE_EXPM1
1.3 pazsan 1909: extern double
1910: #ifdef NeXT
1911: const
1912: #endif
1913: expm1(double);
1.1 anton 1914: r2 = expm1(r1);
1915: #else
1916: r2 = exp(r1)-1.;
1917: #endif
1918:
1.47 anton 1919: fln ( r1 -- r2 ) float-ext f_l_n
1.1 anton 1920: r2 = log(r1);
1921:
1.47 anton 1922: flnp1 ( r1 -- r2 ) float-ext f_l_n_p_one
1.1 anton 1923: ""@i{r2}=ln(@i{r1}+1)""
1924: #ifdef HAVE_LOG1P
1.3 pazsan 1925: extern double
1926: #ifdef NeXT
1927: const
1928: #endif
1929: log1p(double);
1.1 anton 1930: r2 = log1p(r1);
1931: #else
1932: r2 = log(r1+1.);
1933: #endif
1934:
1.47 anton 1935: flog ( r1 -- r2 ) float-ext f_log
1.26 crook 1936: ""The decimal logarithm.""
1.1 anton 1937: r2 = log10(r1);
1938:
1.47 anton 1939: falog ( r1 -- r2 ) float-ext f_a_log
1.1 anton 1940: ""@i{r2}=10**@i{r1}""
1941: extern double pow10(double);
1942: r2 = pow10(r1);
1943:
1.47 anton 1944: fsin ( r1 -- r2 ) float-ext f_sine
1.1 anton 1945: r2 = sin(r1);
1946:
1.47 anton 1947: fsincos ( r1 -- r2 r3 ) float-ext f_sine_cos
1.1 anton 1948: ""@i{r2}=sin(@i{r1}), @i{r3}=cos(@i{r1})""
1949: r2 = sin(r1);
1950: r3 = cos(r1);
1951:
1.47 anton 1952: fsqrt ( r1 -- r2 ) float-ext f_square_root
1.1 anton 1953: r2 = sqrt(r1);
1954:
1.47 anton 1955: ftan ( r1 -- r2 ) float-ext f_tan
1.1 anton 1956: r2 = tan(r1);
1957: :
1958: fsincos f/ ;
1959:
1.47 anton 1960: fsinh ( r1 -- r2 ) float-ext f_cinch
1.1 anton 1961: r2 = sinh(r1);
1962: :
1963: fexpm1 fdup fdup 1. d>f f+ f/ f+ f2/ ;
1964:
1.47 anton 1965: fcosh ( r1 -- r2 ) float-ext f_cosh
1.1 anton 1966: r2 = cosh(r1);
1967: :
1968: fexp fdup 1/f f+ f2/ ;
1969:
1.47 anton 1970: ftanh ( r1 -- r2 ) float-ext f_tan_h
1.1 anton 1971: r2 = tanh(r1);
1972: :
1973: f2* fexpm1 fdup 2. d>f f+ f/ ;
1974:
1.47 anton 1975: fasinh ( r1 -- r2 ) float-ext f_a_cinch
1.1 anton 1976: r2 = asinh(r1);
1977: :
1978: fdup fdup f* 1. d>f f+ fsqrt f/ fatanh ;
1979:
1.47 anton 1980: facosh ( r1 -- r2 ) float-ext f_a_cosh
1.1 anton 1981: r2 = acosh(r1);
1982: :
1983: fdup fdup f* 1. d>f f- fsqrt f+ fln ;
1984:
1.47 anton 1985: fatanh ( r1 -- r2 ) float-ext f_a_tan_h
1.1 anton 1986: r2 = atanh(r1);
1987: :
1988: fdup f0< >r fabs 1. d>f fover f- f/ f2* flnp1 f2/
1989: r> IF fnegate THEN ;
1990:
1.47 anton 1991: sfloats ( n1 -- n2 ) float-ext s_floats
1.52 anton 1992: ""@i{n2} is the number of address units of @i{n1}
1.29 crook 1993: single-precision IEEE floating-point numbers.""
1.1 anton 1994: n2 = n1*sizeof(SFloat);
1995:
1.47 anton 1996: dfloats ( n1 -- n2 ) float-ext d_floats
1.52 anton 1997: ""@i{n2} is the number of address units of @i{n1}
1.29 crook 1998: double-precision IEEE floating-point numbers.""
1.1 anton 1999: n2 = n1*sizeof(DFloat);
2000:
1.47 anton 2001: sfaligned ( c_addr -- sf_addr ) float-ext s_f_aligned
1.52 anton 2002: ""@i{sf-addr} is the first single-float-aligned address greater
1.29 crook 2003: than or equal to @i{c-addr}.""
1.1 anton 2004: sf_addr = (SFloat *)((((Cell)c_addr)+(sizeof(SFloat)-1))&(-sizeof(SFloat)));
2005: :
2006: [ 1 sfloats 1- ] Literal + [ -1 sfloats ] Literal and ;
2007:
1.47 anton 2008: dfaligned ( c_addr -- df_addr ) float-ext d_f_aligned
1.52 anton 2009: ""@i{df-addr} is the first double-float-aligned address greater
1.29 crook 2010: than or equal to @i{c-addr}.""
1.1 anton 2011: df_addr = (DFloat *)((((Cell)c_addr)+(sizeof(DFloat)-1))&(-sizeof(DFloat)));
2012: :
2013: [ 1 dfloats 1- ] Literal + [ -1 dfloats ] Literal and ;
2014:
2015: \ The following words access machine/OS/installation-dependent
2016: \ Gforth internals
2017: \ !! how about environmental queries DIRECT-THREADED,
2018: \ INDIRECT-THREADED, TOS-CACHED, FTOS-CACHED, CODEFIELD-DOES */
2019:
2020: \ local variable implementation primitives
1.15 pazsan 2021: \+
2022: \+glocals
1.1 anton 2023:
1.68 anton 2024: @local# ( #noffset -- w ) gforth fetch_local_number
2025: w = *(Cell *)(lp+noffset);
1.1 anton 2026:
1.47 anton 2027: @local0 ( -- w ) new fetch_local_zero
1.1 anton 2028: w = *(Cell *)(lp+0*sizeof(Cell));
2029:
1.47 anton 2030: @local1 ( -- w ) new fetch_local_four
1.1 anton 2031: w = *(Cell *)(lp+1*sizeof(Cell));
2032:
1.47 anton 2033: @local2 ( -- w ) new fetch_local_eight
1.1 anton 2034: w = *(Cell *)(lp+2*sizeof(Cell));
2035:
1.47 anton 2036: @local3 ( -- w ) new fetch_local_twelve
1.1 anton 2037: w = *(Cell *)(lp+3*sizeof(Cell));
2038:
1.15 pazsan 2039: \+floating
1.1 anton 2040:
1.68 anton 2041: f@local# ( #noffset -- r ) gforth f_fetch_local_number
2042: r = *(Float *)(lp+noffset);
1.1 anton 2043:
1.47 anton 2044: f@local0 ( -- r ) new f_fetch_local_zero
1.1 anton 2045: r = *(Float *)(lp+0*sizeof(Float));
2046:
1.47 anton 2047: f@local1 ( -- r ) new f_fetch_local_eight
1.1 anton 2048: r = *(Float *)(lp+1*sizeof(Float));
2049:
1.15 pazsan 2050: \+
1.1 anton 2051:
1.68 anton 2052: laddr# ( #noffset -- c_addr ) gforth laddr_number
1.1 anton 2053: /* this can also be used to implement lp@ */
1.68 anton 2054: c_addr = (Char *)(lp+noffset);
1.1 anton 2055:
1.68 anton 2056: lp+!# ( #noffset -- ) gforth lp_plus_store_number
1.1 anton 2057: ""used with negative immediate values it allocates memory on the
2058: local stack, a positive immediate argument drops memory from the local
2059: stack""
1.68 anton 2060: lp += noffset;
1.1 anton 2061:
1.47 anton 2062: lp- ( -- ) new minus_four_lp_plus_store
1.1 anton 2063: lp += -sizeof(Cell);
2064:
1.47 anton 2065: lp+ ( -- ) new eight_lp_plus_store
1.1 anton 2066: lp += sizeof(Float);
2067:
1.47 anton 2068: lp+2 ( -- ) new sixteen_lp_plus_store
1.1 anton 2069: lp += 2*sizeof(Float);
2070:
1.47 anton 2071: lp! ( c_addr -- ) gforth lp_store
1.1 anton 2072: lp = (Address)c_addr;
2073:
1.47 anton 2074: >l ( w -- ) gforth to_l
1.1 anton 2075: lp -= sizeof(Cell);
2076: *(Cell *)lp = w;
2077:
1.15 pazsan 2078: \+floating
1.1 anton 2079:
1.47 anton 2080: f>l ( r -- ) gforth f_to_l
1.1 anton 2081: lp -= sizeof(Float);
2082: *(Float *)lp = r;
2083:
1.47 anton 2084: fpick ( u -- r ) gforth
1.52 anton 2085: ""Actually the stack effect is @code{ r0 ... ru u -- r0 ... ru r0 }.""
1.11 anton 2086: r = fp[u+1]; /* +1, because update of fp happens before this fragment */
2087: :
2088: floats fp@ + f@ ;
2089:
1.15 pazsan 2090: \+
2091: \+
1.1 anton 2092:
1.15 pazsan 2093: \+OS
1.1 anton 2094:
2095: define(`uploop',
2096: `pushdef(`$1', `$2')_uploop(`$1', `$2', `$3', `$4', `$5')`'popdef(`$1')')
2097: define(`_uploop',
2098: `ifelse($1, `$3', `$5',
2099: `$4`'define(`$1', incr($1))_uploop(`$1', `$2', `$3', `$4', `$5')')')
2100: \ argflist(argnum): Forth argument list
2101: define(argflist,
2102: `ifelse($1, 0, `',
2103: `uploop(`_i', 1, $1, `format(`u%d ', _i)', `format(`u%d ', _i)')')')
2104: \ argdlist(argnum): declare C's arguments
2105: define(argdlist,
2106: `ifelse($1, 0, `',
2107: `uploop(`_i', 1, $1, `Cell, ', `Cell')')')
2108: \ argclist(argnum): pass C's arguments
2109: define(argclist,
2110: `ifelse($1, 0, `',
2111: `uploop(`_i', 1, $1, `format(`u%d, ', _i)', `format(`u%d', _i)')')')
2112: \ icall(argnum)
2113: define(icall,
1.47 anton 2114: `icall$1 ( argflist($1)u -- uret ) gforth
1.9 pazsan 2115: uret = (SYSCALL(Cell(*)(argdlist($1)))u)(argclist($1));
1.1 anton 2116:
2117: ')
2118: define(fcall,
1.47 anton 2119: `fcall$1 ( argflist($1)u -- rret ) gforth
1.9 pazsan 2120: rret = (SYSCALL(Float(*)(argdlist($1)))u)(argclist($1));
1.1 anton 2121:
2122: ')
2123:
1.46 pazsan 2124: \ close ' to keep fontify happy
1.1 anton 2125:
1.47 anton 2126: open-lib ( c_addr1 u1 -- u2 ) gforth open_lib
1.1 anton 2127: #if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN)
1.8 anton 2128: #ifndef RTLD_GLOBAL
2129: #define RTLD_GLOBAL 0
2130: #endif
1.7 pazsan 2131: u2=(UCell) dlopen(cstr(c_addr1, u1, 1), RTLD_GLOBAL | RTLD_LAZY);
1.1 anton 2132: #else
1.18 pazsan 2133: # ifdef _WIN32
1.1 anton 2134: u2 = (Cell) GetModuleHandle(cstr(c_addr1, u1, 1));
2135: # else
2136: #warning Define open-lib!
2137: u2 = 0;
2138: # endif
2139: #endif
2140:
1.47 anton 2141: lib-sym ( c_addr1 u1 u2 -- u3 ) gforth lib_sym
1.1 anton 2142: #if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN)
2143: u3 = (UCell) dlsym((void*)u2,cstr(c_addr1, u1, 1));
2144: #else
1.18 pazsan 2145: # ifdef _WIN32
1.1 anton 2146: u3 = (Cell) GetProcAddress((HMODULE)u2, cstr(c_addr1, u1, 1));
2147: # else
2148: #warning Define lib-sym!
2149: u3 = 0;
2150: # endif
2151: #endif
2152:
2153: uploop(i, 0, 7, `icall(i)')
2154: icall(20)
2155: uploop(i, 0, 7, `fcall(i)')
2156: fcall(20)
2157:
1.15 pazsan 2158: \+
1.1 anton 2159:
1.47 anton 2160: up! ( a_addr -- ) gforth up_store
1.1 anton 2161: UP=up=(char *)a_addr;
2162: :
2163: up ! ;
2164: Variable UP
1.34 jwilke 2165:
1.47 anton 2166: wcall ( u -- ) gforth
1.64 anton 2167: IF_fpTOS(fp[0]=fpTOS);
1.34 jwilke 2168: FP=fp;
1.81 pazsan 2169: sp=(Cell*)(SYSCALL(Cell(*)(Cell *, void *))u)(sp, &FP);
1.34 jwilke 2170: fp=FP;
1.64 anton 2171: IF_spTOS(spTOS=sp[0];)
2172: IF_fpTOS(fpTOS=fp[0]);
1.46 pazsan 2173:
2174: \+file
2175:
1.47 anton 2176: open-dir ( c_addr u -- wdirid wior ) gforth open_dir
1.46 pazsan 2177: wdirid = (Cell)opendir(tilde_cstr(c_addr, u, 1));
2178: wior = IOR(wdirid == 0);
2179:
1.47 anton 2180: read-dir ( c_addr u1 wdirid -- u2 flag wior ) gforth read_dir
1.46 pazsan 2181: struct dirent * dent;
2182: dent = readdir((DIR *)wdirid);
2183: wior = 0;
2184: flag = -1;
2185: if(dent == NULL) {
2186: u2 = 0;
2187: flag = 0;
2188: } else {
2189: u2 = strlen(dent->d_name);
1.70 pazsan 2190: if(u2 > u1) {
1.46 pazsan 2191: u2 = u1;
1.70 pazsan 2192: wior = -512-ENAMETOOLONG;
2193: }
1.46 pazsan 2194: memmove(c_addr, dent->d_name, u2);
2195: }
2196:
1.47 anton 2197: close-dir ( wdirid -- wior ) gforth close_dir
1.46 pazsan 2198: wior = IOR(closedir((DIR *)wdirid));
2199:
1.47 anton 2200: filename-match ( c_addr1 u1 c_addr2 u2 -- flag ) gforth match_file
1.46 pazsan 2201: char * string = cstr(c_addr1, u1, 1);
2202: char * pattern = cstr(c_addr2, u2, 0);
2203: flag = FLAG(!fnmatch(pattern, string, 0));
2204:
2205: \+
1.34 jwilke 2206:
1.47 anton 2207: newline ( -- c_addr u ) gforth
1.45 anton 2208: ""String containing the newline sequence of the host OS""
2209: char newline[] = {
1.69 anton 2210: #if defined(unix) || defined(__MACH__)
2211: /* Darwin/MacOS X sets __MACH__, but not unix. */
1.45 anton 2212: '\n'
2213: #else
2214: '\r','\n'
2215: #endif
2216: };
2217: c_addr=newline;
2218: u=sizeof(newline);
1.49 pazsan 2219: :
2220: "newline count ;
1.54 pazsan 2221: Create "newline e? crlf [IF] 2 c, $0D c, [ELSE] 1 c, [THEN] $0A c,
2222:
2223: \+os
1.51 anton 2224:
2225: utime ( -- dtime ) gforth
2226: ""Report the current time in microseconds since some epoch.""
2227: struct timeval time1;
2228: gettimeofday(&time1,NULL);
2229: dtime = timeval2us(&time1);
2230:
2231: cputime ( -- duser dsystem ) gforth
2232: ""duser and dsystem are the respective user- and system-level CPU
2233: times used since the start of the Forth system (excluding child
2234: processes), in microseconds (the granularity may be much larger,
2235: however). On platforms without the getrusage call, it reports elapsed
2236: time (since some epoch) for duser and 0 for dsystem.""
2237: #ifdef HAVE_GETRUSAGE
2238: struct rusage usage;
2239: getrusage(RUSAGE_SELF, &usage);
2240: duser = timeval2us(&usage.ru_utime);
2241: dsystem = timeval2us(&usage.ru_stime);
2242: #else
2243: struct timeval time1;
2244: gettimeofday(&time1,NULL);
2245: duser = timeval2us(&time1);
1.57 anton 2246: #ifndef BUGGY_LONG_LONG
1.51 anton 2247: dsystem = (DCell)0;
1.57 anton 2248: #else
2249: dsystem=(DCell){0,0};
2250: #endif
1.51 anton 2251: #endif
2252:
1.54 pazsan 2253: \+
2254:
2255: \+floating
2256:
1.51 anton 2257: v* ( f_addr1 nstride1 f_addr2 nstride2 ucount -- r ) gforth v_star
2258: ""dot-product: r=v1*v2. The first element of v1 is at f_addr1, the
2259: next at f_addr1+nstride1 and so on (similar for v2). Both vectors have
2260: ucount elements.""
2261: for (r=0.; ucount>0; ucount--) {
2262: r += *f_addr1 * *f_addr2;
2263: f_addr1 = (Float *)(((Address)f_addr1)+nstride1);
2264: f_addr2 = (Float *)(((Address)f_addr2)+nstride2);
2265: }
1.54 pazsan 2266: :
2267: >r swap 2swap swap 0e r> 0 ?DO
2268: dup f@ over + 2swap dup f@ f* f+ over + 2swap
2269: LOOP 2drop 2drop ;
1.51 anton 2270:
2271: faxpy ( ra f_x nstridex f_y nstridey ucount -- ) gforth
2272: ""vy=ra*vx+vy""
2273: for (; ucount>0; ucount--) {
2274: *f_y += ra * *f_x;
2275: f_x = (Float *)(((Address)f_x)+nstridex);
2276: f_y = (Float *)(((Address)f_y)+nstridey);
2277: }
1.54 pazsan 2278: :
2279: >r swap 2swap swap r> 0 ?DO
2280: fdup dup f@ f* over + 2swap dup f@ f+ dup f! over + 2swap
2281: LOOP 2drop 2drop fdrop ;
1.60 pazsan 2282:
2283: \+
2284:
2285: \+file
2286:
2287: (read-line) ( c_addr u1 wfileid -- u2 flag u3 wior ) file paren_read_line
2288: Cell c;
2289: flag=-1;
2290: u3=0;
2291: for(u2=0; u2<u1; u2++)
2292: {
2293: c = getc((FILE *)wfileid);
2294: u3++;
2295: if (c=='\n') break;
2296: if (c=='\r') {
2297: if ((c = getc((FILE *)wfileid))!='\n')
2298: ungetc(c,(FILE *)wfileid);
2299: else
2300: u3++;
2301: break;
2302: }
2303: if (c==EOF) {
2304: flag=FLAG(u2!=0);
2305: break;
2306: }
2307: c_addr[u2] = (Char)c;
2308: }
2309: wior=FILEIO(ferror((FILE *)wfileid));
1.71 anton 2310:
2311: \+
2312:
2313: (listlfind) ( c_addr u longname1 -- longname2 ) new paren_listlfind
2314: for (; longname1 != NULL; longname1 = (struct Longname *)(longname1->next))
2315: if ((UCell)LONGNAME_COUNT(longname1)==u &&
2316: memcasecmp(c_addr, longname1->name, u)== 0 /* or inline? */)
2317: break;
2318: longname2=longname1;
2319: :
1.72 pazsan 2320: BEGIN dup WHILE (findl-samelen) dup WHILE
2321: >r 2dup r@ cell+ cell+ capscomp 0=
1.71 anton 2322: IF 2drop r> EXIT THEN
2323: r> @
2324: REPEAT THEN nip nip ;
1.72 pazsan 2325: : (findl-samelen) ( u longname1 -- u longname2/0 )
2326: BEGIN 2dup cell+ @ lcount-mask and <> WHILE @ dup 0= UNTIL THEN ;
1.71 anton 2327:
2328: \+hash
2329:
2330: (hashlfind) ( c_addr u a_addr -- longname2 ) new paren_hashlfind
2331: struct Longname *longname1;
2332: longname2=NULL;
2333: while(a_addr != NULL)
2334: {
2335: longname1=(struct Longname *)(a_addr[1]);
2336: a_addr=(Cell *)(a_addr[0]);
2337: if ((UCell)LONGNAME_COUNT(longname1)==u &&
2338: memcasecmp(c_addr, longname1->name, u)== 0 /* or inline? */)
2339: {
2340: longname2=longname1;
2341: break;
2342: }
2343: }
2344: :
2345: BEGIN dup WHILE
1.72 pazsan 2346: 2@ >r >r dup r@ cell+ @ lcount-mask and =
2347: IF 2dup r@ cell+ cell+ capscomp 0=
1.71 anton 2348: IF 2drop r> rdrop EXIT THEN THEN
2349: rdrop r>
2350: REPEAT nip nip ;
2351:
2352: (tablelfind) ( c_addr u a_addr -- longname2 ) new paren_tablelfind
2353: ""A case-sensitive variant of @code{(hashfind)}""
2354: struct Longname *longname1;
2355: longname2=NULL;
2356: while(a_addr != NULL)
2357: {
2358: longname1=(struct Longname *)(a_addr[1]);
2359: a_addr=(Cell *)(a_addr[0]);
2360: if ((UCell)LONGNAME_COUNT(longname1)==u &&
2361: memcmp(c_addr, longname1->name, u)== 0 /* or inline? */)
2362: {
2363: longname2=longname1;
2364: break;
2365: }
2366: }
2367: :
2368: BEGIN dup WHILE
1.72 pazsan 2369: 2@ >r >r dup r@ cell+ @ lcount-mask and =
2370: IF 2dup r@ cell+ cell+ -text 0=
1.71 anton 2371: IF 2drop r> rdrop EXIT THEN THEN
2372: rdrop r>
2373: REPEAT nip nip ;
1.54 pazsan 2374:
2375: \+
1.72 pazsan 2376:
1.80 pazsan 2377: \+peephole
1.83 pazsan 2378:
2379: \g peephole
1.80 pazsan 2380:
1.74 anton 2381: primtable ( -- wprimtable ) new
2382: ""wprimtable is a table containing the xts of the primitives indexed
2383: by sequence-number in prim (for use in prepare-peephole-table).""
1.75 anton 2384: wprimtable = (Cell)primtable(symbols+DOESJUMP+1,MAX_SYMBOLS-DOESJUMP-1);
1.74 anton 2385:
2386: prepare-peephole-table ( wprimtable -- wpeeptable ) new prepare_peephole_opt
2387: ""wpeeptable is a data structure used by @code{peephole-opt}; it is
2388: constructed by combining a primitives table with a simple peephole
2389: optimization table.""
2390: wpeeptable = prepare_peephole_table((Xt *)wprimtable);
2391:
2392: peephole-opt ( xt1 xt2 wpeeptable -- xt ) new peephole_opt
2393: ""xt is the combination of xt1 and xt2 (according to wpeeptable); if
2394: they cannot be combined, xt is 0.""
2395: xt = peephole_opt(xt1, xt2, wpeeptable);
2396:
1.86 anton 2397: call ( #a_callee -- R:a_retaddr ) new
1.75 anton 2398: ""Call callee (a variant of docol with inline argument).""
1.88 pazsan 2399: #ifdef DEBUG
2400: {
2401: CFA_TO_NAME((((Cell *)a_callee)-2));
2402: fprintf(stderr,"%08lx: call %08lx %.*s\n",(Cell)ip,(Cell)a_callee,
2403: len,name);
2404: }
2405: #endif
1.75 anton 2406: a_retaddr = (Cell *)IP;
2407: SET_IP((Xt *)a_callee);
2408:
1.86 anton 2409: useraddr ( #u -- a_addr ) new
1.75 anton 2410: a_addr = (Cell *)(up+u);
1.86 anton 2411:
2412: compile-prim ( xt1 -- xt2 ) new compile_prim
2413: xt2 = (Xt)compile_prim((Label)xt1);
1.82 anton 2414:
1.89 pazsan 2415: lit@ ( #a_addr -- w ) new lit_fetch
2416: w = *a_addr;
2417:
2418: lit-perform ( #a_addr -- ) new lit_perform
2419: ip=IP;
2420: SUPER_END;
2421: EXEC(*(Xt *)a_addr);
2422:
2423: lit+ ( #n1 n2 -- n3 ) new lit_plus
2424: n3 = n1 + n2;
2425:
2426: does-exec ( #a_cfa -- R:nest a_pfa ) new does_exec
2427: a_pfa = PFA(a_cfa);
2428: nest = (Cell)ip;
2429: IF_spTOS(spTOS = sp[0]);
1.90 ! pazsan 2430: #ifdef DEBUG
! 2431: {
! 2432: CFA_TO_NAME(a_cfa);
! 2433: fprintf(stderr,"%08lx: does %08lx %.*s\n",
! 2434: (Cell)ip,(Cell)a_cfa,len,name);
! 2435: }
! 2436: #endif
1.89 pazsan 2437: SET_IP(DOES_CODE1(a_cfa));
2438:
1.82 anton 2439: include(peeprules.vmg)
1.75 anton 2440:
1.80 pazsan 2441: \+
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