Annotation of gforth/prim, revision 1.140

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

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