Annotation of gforth/prim, revision 1.157

1.1       anton       1: \ Gforth primitives
                      2: 
1.156     anton       3: \ Copyright (C) 1995,1996,1997,1998,2000,2003,2004 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: 
1.145     anton     139: \ Stack caching setup
                    140: 
1.147     anton     141: ifdef(`M4_ENGINE_FAST', `include(cache1.vmg)', `include(cache0.vmg)')
1.145     anton     142: 
1.1       anton     143: \ these m4 macros would collide with identifiers
                    144: undefine(`index')
                    145: undefine(`shift')
1.78      pazsan    146: undefine(`symbols')
1.1       anton     147: 
1.140     anton     148: \F 0 [if]
                    149: 
1.139     anton     150: \ run-time routines for non-primitives.  They are defined as
                    151: \ primitives, because that simplifies things.
                    152: 
                    153: (docol)        ( -- R:a_retaddr )      gforth-internal paren_docol
                    154: ""run-time routine for colon definitions""
1.148     anton     155: #ifdef NO_IP
                    156: a_retaddr = next_code;
                    157: INST_TAIL;
                    158: goto **(Label *)PFA(CFA);
                    159: #else /* !defined(NO_IP) */
1.141     anton     160: a_retaddr = (Cell *)IP;
1.139     anton     161: SET_IP((Xt *)PFA(CFA));
1.148     anton     162: #endif /* !defined(NO_IP) */
1.139     anton     163: 
                    164: (docon) ( -- w )       gforth-internal paren_docon
                    165: ""run-time routine for constants""
                    166: w = *(Cell *)PFA(CFA);
1.148     anton     167: #ifdef NO_IP
                    168: INST_TAIL;
                    169: goto *next_code;
                    170: #endif /* defined(NO_IP) */
1.139     anton     171: 
                    172: (dovar) ( -- a_body )  gforth-internal paren_dovar
                    173: ""run-time routine for variables and CREATEd words""
                    174: a_body = PFA(CFA);
1.148     anton     175: #ifdef NO_IP
                    176: INST_TAIL;
                    177: goto *next_code;
                    178: #endif /* defined(NO_IP) */
1.139     anton     179: 
                    180: (douser) ( -- a_user ) gforth-internal paren_douser
                    181: ""run-time routine for constants""
                    182: a_user = (Cell *)(up+*(Cell *)PFA(CFA));
1.148     anton     183: #ifdef NO_IP
                    184: INST_TAIL;
                    185: goto *next_code;
                    186: #endif /* defined(NO_IP) */
1.139     anton     187: 
                    188: (dodefer) ( -- )       gforth-internal paren_dodefer
                    189: ""run-time routine for deferred words""
1.148     anton     190: #ifndef NO_IP
1.141     anton     191: ip=IP; /* undo any ip updating that may have been performed by NEXT_P0 */
1.148     anton     192: #endif /* !defined(NO_IP) */
1.141     anton     193: SUPER_END; /* !! probably unnecessary and may lead to measurement errors */
1.139     anton     194: EXEC(*(Xt *)PFA(CFA));
                    195: 
                    196: (dofield) ( n1 -- n2 ) gforth-internal paren_field
                    197: ""run-time routine for fields""
                    198: n2 = n1 + *(Cell *)PFA(CFA);
1.148     anton     199: #ifdef NO_IP
                    200: INST_TAIL;
                    201: goto *next_code;
                    202: #endif /* defined(NO_IP) */
1.139     anton     203: 
                    204: (dodoes) ( -- a_body R:a_retaddr )     gforth-internal paren_dodoes
                    205: ""run-time routine for @code{does>}-defined words""
1.148     anton     206: #ifdef NO_IP
                    207: a_retaddr = next_code;
                    208: a_body = PFA(CFA);
                    209: INST_TAIL;
                    210: goto **(Label *)DOES_CODE1(CFA);
                    211: #else /* !defined(NO_IP) */
1.141     anton     212: a_retaddr = (Cell *)IP;
1.139     anton     213: a_body = PFA(CFA);
                    214: SET_IP(DOES_CODE1(CFA));
1.148     anton     215: #endif /* !defined(NO_IP) */
1.139     anton     216: 
                    217: (does-handler) ( -- )  gforth-internal paren_does_handler
                    218: ""just a slot to have an encoding for the DOESJUMP, 
                    219: which is no longer used anyway (!! eliminate this)""
1.140     anton     220: 
                    221: \F [endif]
1.139     anton     222: 
1.83      pazsan    223: \g control
                    224: 
1.47      anton     225: noop   ( -- )          gforth
1.1       anton     226: :
                    227:  ;
                    228: 
1.112     pazsan    229: call   ( #a_callee -- R:a_retaddr )    new
                    230: ""Call callee (a variant of docol with inline argument).""
                    231: #ifdef NO_IP
1.148     anton     232: assert(0);
1.112     pazsan    233: INST_TAIL;
                    234: JUMP(a_callee);
                    235: #else
                    236: #ifdef DEBUG
                    237:     {
                    238:       CFA_TO_NAME((((Cell *)a_callee)-2));
                    239:       fprintf(stderr,"%08lx: call %08lx %.*s\n",(Cell)ip,(Cell)a_callee,
                    240:              len,name);
                    241:     }
                    242: #endif
                    243: a_retaddr = (Cell *)IP;
                    244: SET_IP((Xt *)a_callee);
                    245: #endif
1.1       anton     246: 
1.47      anton     247: execute        ( xt -- )               core
1.29      crook     248: ""Perform the semantics represented by the execution token, @i{xt}.""
1.102     anton     249: #ifndef NO_IP
1.1       anton     250: ip=IP;
1.102     anton     251: #endif
1.150     anton     252: IF_spTOS(spTOS = sp[0]); /* inst_tail would produce a NEXT_P1 */
1.76      anton     253: SUPER_END;
1.1       anton     254: EXEC(xt);
                    255: 
1.47      anton     256: perform        ( a_addr -- )   gforth
1.55      anton     257: ""@code{@@ execute}.""
1.1       anton     258: /* and pfe */
1.102     anton     259: #ifndef NO_IP
1.1       anton     260: ip=IP;
1.102     anton     261: #endif
1.150     anton     262: IF_spTOS(spTOS = sp[0]); /* inst_tail would produce a NEXT_P1 */
1.76      anton     263: SUPER_END;
1.1       anton     264: EXEC(*(Xt *)a_addr);
                    265: :
                    266:  @ execute ;
                    267: 
1.112     pazsan    268: ;s     ( R:w -- )              gforth  semis
                    269: ""The primitive compiled by @code{EXIT}.""
                    270: #ifdef NO_IP
                    271: INST_TAIL;
                    272: goto *(void *)w;
                    273: #else
                    274: SET_IP((Xt *)w);
                    275: #endif
                    276: 
                    277: unloop ( R:w1 R:w2 -- )        core
                    278: /* !! alias for 2rdrop */
                    279: :
                    280:  r> rdrop rdrop >r ;
                    281: 
                    282: lit-perform    ( #a_addr -- )  new     lit_perform
                    283: #ifndef NO_IP
                    284: ip=IP;
                    285: #endif
                    286: SUPER_END;
                    287: EXEC(*(Xt *)a_addr);
                    288: 
                    289: does-exec ( #a_cfa -- R:nest a_pfa )   new     does_exec
                    290: #ifdef NO_IP
                    291: /* compiled to LIT CALL by compile_prim */
                    292: assert(0);
                    293: #else
                    294: a_pfa = PFA(a_cfa);
                    295: nest = (Cell)IP;
                    296: IF_spTOS(spTOS = sp[0]);
                    297: #ifdef DEBUG
                    298:     {
                    299:       CFA_TO_NAME(a_cfa);
                    300:       fprintf(stderr,"%08lx: does %08lx %.*s\n",
                    301:              (Cell)ip,(Cell)a_cfa,len,name);
                    302:     }
                    303: #endif
                    304: SET_IP(DOES_CODE1(a_cfa));
                    305: #endif
                    306: 
1.15      pazsan    307: \+glocals
1.1       anton     308: 
1.112     pazsan    309: branch-lp+!# ( #a_target #nlocals -- ) gforth  branch_lp_plus_store_number
1.1       anton     310: /* this will probably not be used */
1.68      anton     311: lp += nlocals;
1.112     pazsan    312: #ifdef NO_IP
                    313: INST_TAIL;
                    314: JUMP(a_target);
                    315: #else
                    316: SET_IP((Xt *)a_target);
                    317: #endif
1.1       anton     318: 
1.15      pazsan    319: \+
1.1       anton     320: 
1.112     pazsan    321: branch ( #a_target -- )        gforth
                    322: #ifdef NO_IP
                    323: INST_TAIL;
                    324: JUMP(a_target);
                    325: #else
                    326: SET_IP((Xt *)a_target);
1.153     anton     327: INST_TAIL;
                    328: NEXT_P2;
1.112     pazsan    329: #endif
1.153     anton     330: SUPER_CONTINUE;  /* we do our own control flow, so don't append NEXT etc. */
1.1       anton     331: :
1.112     pazsan    332:  r> @ >r ;
1.1       anton     333: 
1.112     pazsan    334: \ condbranch(forthname,stackeffect,restline,code1,code2,forthcode)
1.1       anton     335: \ this is non-syntactical: code must open a brace that is closed by the macro
                    336: define(condbranch,
1.112     pazsan    337: $1 ( `#'a_target $2 ) $3
                    338: $4     #ifdef NO_IP
1.96      anton     339: INST_TAIL;
1.112     pazsan    340: #endif
                    341: $5     #ifdef NO_IP
                    342: JUMP(a_target);
                    343: #else
                    344: SET_IP((Xt *)a_target);
                    345: INST_TAIL; NEXT_P2;
                    346: #endif
1.1       anton     347: }
1.87      anton     348: SUPER_CONTINUE;
1.112     pazsan    349: $6
1.1       anton     350: 
1.15      pazsan    351: \+glocals
1.1       anton     352: 
1.112     pazsan    353: $1-lp+!`#' ( `#'a_target `#'nlocals $2 ) $3_lp_plus_store_number
                    354: $4     #ifdef NO_IP
1.96      anton     355: INST_TAIL;
1.112     pazsan    356: #endif
                    357: $5     lp += nlocals;
                    358: #ifdef NO_IP
                    359: JUMP(a_target);
                    360: #else
                    361: SET_IP((Xt *)a_target);
                    362: INST_TAIL; NEXT_P2;
                    363: #endif
1.1       anton     364: }
1.87      anton     365: SUPER_CONTINUE;
1.1       anton     366: 
1.15      pazsan    367: \+
1.1       anton     368: )
                    369: 
1.68      anton     370: condbranch(?branch,f --,f83    question_branch,
1.112     pazsan    371: ,if (f==0) {
1.5       jwilke    372: ,:
1.112     pazsan    373:  0= dup 0=          \ !f f
                    374:  r> tuck cell+      \ !f branchoffset f IP+
                    375:  and -rot @ and or  \ f&IP+|!f&branch
1.5       jwilke    376:  >r ;)
1.1       anton     377: 
                    378: \ we don't need an lp_plus_store version of the ?dup-stuff, because it
                    379: \ is only used in if's (yet)
                    380: 
1.15      pazsan    381: \+xconds
1.1       anton     382: 
1.112     pazsan    383: ?dup-?branch   ( #a_target f -- f )    new     question_dupe_question_branch
1.1       anton     384: ""The run-time procedure compiled by @code{?DUP-IF}.""
                    385: if (f==0) {
                    386:   sp++;
1.64      anton     387:   IF_spTOS(spTOS = sp[0]);
1.112     pazsan    388: #ifdef NO_IP
                    389: INST_TAIL;
                    390: JUMP(a_target);
                    391: #else
                    392: SET_IP((Xt *)a_target);
                    393:   INST_TAIL; NEXT_P2;
                    394: #endif
1.1       anton     395: }
1.87      anton     396: SUPER_CONTINUE;
1.1       anton     397: 
1.112     pazsan    398: ?dup-0=-?branch ( #a_target f -- ) new question_dupe_zero_equals_question_branch
1.1       anton     399: ""The run-time procedure compiled by @code{?DUP-0=-IF}.""
                    400: /* the approach taken here of declaring the word as having the stack
                    401: effect ( f -- ) and correcting for it in the branch-taken case costs a
                    402: few cycles in that case, but is easy to convert to a CONDBRANCH
                    403: invocation */
                    404: if (f!=0) {
                    405:   sp--;
1.112     pazsan    406: #ifdef NO_IP
                    407:   JUMP(a_target);
                    408: #else
                    409:   SET_IP((Xt *)a_target);
1.1       anton     410:   NEXT;
1.112     pazsan    411: #endif
1.1       anton     412: }
1.87      anton     413: SUPER_CONTINUE;
1.1       anton     414: 
1.15      pazsan    415: \+
1.31      jwilke    416: \fhas? skiploopprims 0= [IF]
1.1       anton     417: 
1.68      anton     418: condbranch((next),R:n1 -- R:n2,cmFORTH paren_next,
1.65      anton     419: n2=n1-1;
1.112     pazsan    420: ,if (n1) {
1.1       anton     421: ,:
                    422:  r> r> dup 1- >r
1.112     pazsan    423:  IF @ >r ELSE cell+ >r THEN ;)
1.1       anton     424: 
1.68      anton     425: condbranch((loop),R:nlimit R:n1 -- R:nlimit R:n2,gforth        paren_loop,
1.65      anton     426: n2=n1+1;
1.112     pazsan    427: ,if (n2 != nlimit) {
1.1       anton     428: ,:
                    429:  r> r> 1+ r> 2dup =
                    430:  IF >r 1- >r cell+ >r
1.112     pazsan    431:  ELSE >r >r @ >r THEN ;)
1.1       anton     432: 
1.68      anton     433: condbranch((+loop),n R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_plus_loop,
1.1       anton     434: /* !! check this thoroughly */
                    435: /* sign bit manipulation and test: (x^y)<0 is equivalent to (x<0) != (y<0) */
                    436: /* dependent upon two's complement arithmetic */
1.65      anton     437: Cell olddiff = n1-nlimit;
                    438: n2=n1+n;       
1.149     anton     439: ,if (((olddiff^(olddiff+n))    /* the limit is not crossed */
                    440:      &(olddiff^n))            /* OR it is a wrap-around effect */
                    441:     >=0) { /* & is used to avoid having two branches for gforth-native */
1.1       anton     442: ,:
                    443:  r> swap
                    444:  r> r> 2dup - >r
                    445:  2 pick r@ + r@ xor 0< 0=
                    446:  3 pick r> xor 0< 0= or
1.112     pazsan    447:  IF    >r + >r @ >r
1.1       anton     448:  ELSE  >r >r drop cell+ >r THEN ;)
                    449: 
1.15      pazsan    450: \+xconds
1.1       anton     451: 
1.68      anton     452: condbranch((-loop),u R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_minus_loop,
1.65      anton     453: UCell olddiff = n1-nlimit;
                    454: n2=n1-u;
1.112     pazsan    455: ,if (olddiff>u) {
1.1       anton     456: ,)
                    457: 
1.68      anton     458: condbranch((s+loop),n R:nlimit R:n1 -- R:nlimit R:n2,gforth    paren_symmetric_plus_loop,
1.1       anton     459: ""The run-time procedure compiled by S+LOOP. It loops until the index
                    460: crosses the boundary between limit and limit-sign(n). I.e. a symmetric
                    461: version of (+LOOP).""
                    462: /* !! check this thoroughly */
1.65      anton     463: Cell diff = n1-nlimit;
1.1       anton     464: Cell newdiff = diff+n;
                    465: if (n<0) {
                    466:     diff = -diff;
                    467:     newdiff = -newdiff;
                    468: }
1.65      anton     469: n2=n1+n;
1.149     anton     470: ,if (((~diff)|newdiff)<0) { /* use | to avoid two branches for gforth-native */
1.1       anton     471: ,)
                    472: 
1.15      pazsan    473: \+
1.1       anton     474: 
1.112     pazsan    475: (for)   ( ncount -- R:nlimit R:ncount )         cmFORTH         paren_for
1.1       anton     476: /* or (for) = >r -- collides with unloop! */
1.65      anton     477: nlimit=0;
1.1       anton     478: :
                    479:  r> swap 0 >r >r >r ;
                    480: 
1.112     pazsan    481: (do)    ( nlimit nstart -- R:nlimit R:nstart )  gforth          paren_do
1.1       anton     482: :
                    483:  r> swap rot >r >r >r ;
                    484: 
1.112     pazsan    485: (?do) ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth  paren_question_do
                    486: #ifdef NO_IP
                    487:     INST_TAIL;
                    488: #endif
1.1       anton     489: if (nstart == nlimit) {
1.112     pazsan    490: #ifdef NO_IP
                    491:     JUMP(a_target);
                    492: #else
                    493:     SET_IP((Xt *)a_target);
                    494:     INST_TAIL; NEXT_P2;
                    495: #endif
1.1       anton     496: }
1.87      anton     497: SUPER_CONTINUE;
1.1       anton     498: :
                    499:   2dup =
                    500:   IF   r> swap rot >r >r
1.112     pazsan    501:        @ >r
1.1       anton     502:   ELSE r> swap rot >r >r
                    503:        cell+ >r
                    504:   THEN ;                               \ --> CORE-EXT
                    505: 
1.15      pazsan    506: \+xconds
1.1       anton     507: 
1.112     pazsan    508: (+do)  ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth paren_plus_do
                    509: #ifdef NO_IP
                    510:     INST_TAIL;
                    511: #endif
1.1       anton     512: if (nstart >= nlimit) {
1.112     pazsan    513: #ifdef NO_IP
                    514:     JUMP(a_target);
                    515: #else
                    516:     SET_IP((Xt *)a_target);
                    517:     INST_TAIL; NEXT_P2;
                    518: #endif
1.1       anton     519: }
1.87      anton     520: SUPER_CONTINUE;
1.1       anton     521: :
                    522:  swap 2dup
                    523:  r> swap >r swap >r
                    524:  >=
                    525:  IF
1.112     pazsan    526:      @
1.1       anton     527:  ELSE
                    528:      cell+
                    529:  THEN  >r ;
                    530: 
1.112     pazsan    531: (u+do) ( #a_target ulimit ustart -- R:ulimit R:ustart ) gforth paren_u_plus_do
                    532: #ifdef NO_IP
                    533:     INST_TAIL;
                    534: #endif
1.1       anton     535: if (ustart >= ulimit) {
1.112     pazsan    536: #ifdef NO_IP
                    537: JUMP(a_target);
                    538: #else
                    539: SET_IP((Xt *)a_target);
                    540: INST_TAIL; NEXT_P2;
                    541: #endif
1.1       anton     542: }
1.87      anton     543: SUPER_CONTINUE;
1.1       anton     544: :
                    545:  swap 2dup
                    546:  r> swap >r swap >r
                    547:  u>=
                    548:  IF
1.112     pazsan    549:      @
1.1       anton     550:  ELSE
                    551:      cell+
                    552:  THEN  >r ;
                    553: 
1.112     pazsan    554: (-do)  ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth paren_minus_do
                    555: #ifdef NO_IP
                    556:     INST_TAIL;
                    557: #endif
1.1       anton     558: if (nstart <= nlimit) {
1.112     pazsan    559: #ifdef NO_IP
                    560: JUMP(a_target);
                    561: #else
                    562: SET_IP((Xt *)a_target);
                    563: INST_TAIL; NEXT_P2;
                    564: #endif
1.1       anton     565: }
1.87      anton     566: SUPER_CONTINUE;
1.1       anton     567: :
                    568:  swap 2dup
                    569:  r> swap >r swap >r
                    570:  <=
                    571:  IF
1.112     pazsan    572:      @
1.1       anton     573:  ELSE
                    574:      cell+
                    575:  THEN  >r ;
                    576: 
1.112     pazsan    577: (u-do) ( #a_target ulimit ustart -- R:ulimit R:ustart ) gforth paren_u_minus_do
                    578: #ifdef NO_IP
                    579:     INST_TAIL;
                    580: #endif
1.1       anton     581: if (ustart <= ulimit) {
1.112     pazsan    582: #ifdef NO_IP
                    583: JUMP(a_target);
                    584: #else
                    585: SET_IP((Xt *)a_target);
                    586: INST_TAIL; NEXT_P2;
                    587: #endif
1.1       anton     588: }
1.87      anton     589: SUPER_CONTINUE;
1.1       anton     590: :
                    591:  swap 2dup
                    592:  r> swap >r swap >r
                    593:  u<=
                    594:  IF
1.112     pazsan    595:      @
1.1       anton     596:  ELSE
                    597:      cell+
                    598:  THEN  >r ;
                    599: 
1.15      pazsan    600: \+
1.1       anton     601: 
1.5       jwilke    602: \ don't make any assumptions where the return stack is!!
                    603: \ implement this in machine code if it should run quickly!
                    604: 
1.65      anton     605: i      ( R:n -- R:n n )                core
1.1       anton     606: :
1.5       jwilke    607: \ rp@ cell+ @ ;
                    608:   r> r> tuck >r >r ;
1.1       anton     609: 
1.65      anton     610: i'     ( R:w R:w2 -- R:w R:w2 w )              gforth          i_tick
1.1       anton     611: :
1.5       jwilke    612: \ rp@ cell+ cell+ @ ;
                    613:   r> r> r> dup itmp ! >r >r >r itmp @ ;
                    614: variable itmp
1.1       anton     615: 
1.65      anton     616: j      ( R:n R:d1 -- n R:n R:d1 )              core
1.1       anton     617: :
1.5       jwilke    618: \ rp@ cell+ cell+ cell+ @ ;
                    619:   r> r> r> r> dup itmp ! >r >r >r >r itmp @ ;
                    620: [IFUNDEF] itmp variable itmp [THEN]
1.1       anton     621: 
1.65      anton     622: k      ( R:n R:d1 R:d2 -- n R:n R:d1 R:d2 )            gforth
1.1       anton     623: :
1.5       jwilke    624: \ rp@ [ 5 cells ] Literal + @ ;
                    625:   r> r> r> r> r> r> dup itmp ! >r >r >r >r >r >r itmp @ ;
                    626: [IFUNDEF] itmp variable itmp [THEN]
1.31      jwilke    627: 
                    628: \f[THEN]
1.1       anton     629: 
                    630: \ digit is high-level: 0/0%
                    631: 
1.83      pazsan    632: \g strings
                    633: 
1.47      anton     634: move   ( c_from c_to ucount -- )               core
1.52      anton     635: ""Copy the contents of @i{ucount} aus at @i{c-from} to
1.33      anton     636: @i{c-to}. @code{move} works correctly even if the two areas overlap.""
1.52      anton     637: /* !! note that the standard specifies addr, not c-addr */
1.1       anton     638: memmove(c_to,c_from,ucount);
                    639: /* make an Ifdef for bsd and others? */
                    640: :
                    641:  >r 2dup u< IF r> cmove> ELSE r> cmove THEN ;
                    642: 
1.47      anton     643: cmove  ( c_from c_to u -- )    string  c_move
1.33      anton     644: ""Copy the contents of @i{ucount} characters from data space at
                    645: @i{c-from} to @i{c-to}. The copy proceeds @code{char}-by-@code{char}
                    646: from low address to high address; i.e., for overlapping areas it is
                    647: safe if @i{c-to}=<@i{c-from}.""
1.125     anton     648: cmove(c_from,c_to,u);
1.1       anton     649: :
                    650:  bounds ?DO  dup c@ I c! 1+  LOOP  drop ;
                    651: 
1.47      anton     652: cmove> ( c_from c_to u -- )    string  c_move_up
1.33      anton     653: ""Copy the contents of @i{ucount} characters from data space at
                    654: @i{c-from} to @i{c-to}. The copy proceeds @code{char}-by-@code{char}
                    655: from high address to low address; i.e., for overlapping areas it is
                    656: safe if @i{c-to}>=@i{c-from}.""
1.125     anton     657: cmove_up(c_from,c_to,u);
1.1       anton     658: :
                    659:  dup 0= IF  drop 2drop exit  THEN
                    660:  rot over + -rot bounds swap 1-
                    661:  DO  1- dup c@ I c!  -1 +LOOP  drop ;
                    662: 
1.47      anton     663: fill   ( c_addr u c -- )       core
1.52      anton     664: ""Store @i{c} in @i{u} chars starting at @i{c-addr}.""
1.1       anton     665: memset(c_addr,c,u);
                    666: :
                    667:  -rot bounds
                    668:  ?DO  dup I c!  LOOP  drop ;
                    669: 
1.47      anton     670: compare        ( c_addr1 u1 c_addr2 u2 -- n )  string
1.29      crook     671: ""Compare two strings lexicographically. If they are equal, @i{n} is 0; if
                    672: the first string is smaller, @i{n} is -1; if the first string is larger, @i{n}
1.1       anton     673: is 1. Currently this is based on the machine's character
1.26      crook     674: comparison. In the future, this may change to consider the current
1.1       anton     675: locale and its collation order.""
1.46      pazsan    676: /* close ' to keep fontify happy */ 
1.125     anton     677: n = compare(c_addr1, u1, c_addr2, u2);
1.1       anton     678: :
1.43      pazsan    679:  rot 2dup swap - >r min swap -text dup
                    680:  IF  rdrop  ELSE  drop r> sgn  THEN ;
1.143     pazsan    681: : -text ( c_addr1 u c_addr2 -- n )
                    682:  swap bounds
                    683:  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                    684:  ELSE  c@ I c@ - unloop  THEN  sgn ;
1.43      pazsan    685: : sgn ( n -- -1/0/1 )
                    686:  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton     687: 
1.125     anton     688: \ -text is only used by replaced primitives now; move it elsewhere
                    689: \ -text        ( c_addr1 u c_addr2 -- n )      new     dash_text
                    690: \ n = memcmp(c_addr1, c_addr2, u);
                    691: \ if (n<0)
                    692: \   n = -1;
                    693: \ else if (n>0)
                    694: \   n = 1;
                    695: \ :
                    696: \  swap bounds
                    697: \  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                    698: \  ELSE  c@ I c@ - unloop  THEN  sgn ;
                    699: \ : sgn ( n -- -1/0/1 )
                    700: \  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton     701: 
1.47      anton     702: toupper        ( c1 -- c2 )    gforth
1.29      crook     703: ""If @i{c1} is a lower-case character (in the current locale), @i{c2}
1.25      anton     704: is the equivalent upper-case character. All other characters are unchanged.""
1.1       anton     705: c2 = toupper(c1);
                    706: :
                    707:  dup [char] a - [ char z char a - 1 + ] Literal u<  bl and - ;
                    708: 
1.47      anton     709: /string        ( c_addr1 u1 n -- c_addr2 u2 )  string  slash_string
1.29      crook     710: ""Adjust the string specified by @i{c-addr1, u1} to remove @i{n}
1.27      crook     711: characters from the start of the string.""
1.1       anton     712: c_addr2 = c_addr1+n;
                    713: u2 = u1-n;
                    714: :
                    715:  tuck - >r + r> dup 0< IF  - 0  THEN ;
                    716: 
1.83      pazsan    717: \g arith
                    718: 
1.112     pazsan    719: lit    ( #w -- w )             gforth
                    720: :
                    721:  r> dup @ swap cell+ >r ;
                    722: 
1.47      anton     723: +      ( n1 n2 -- n )          core    plus
1.1       anton     724: n = n1+n2;
                    725: 
1.112     pazsan    726: \ lit+ / lit_plus = lit +
                    727: 
                    728: lit+   ( n1 #n2 -- n )         new     lit_plus
                    729: n=n1+n2;
                    730: 
1.1       anton     731: \ PFE-0.9.14 has it differently, but the next release will have it as follows
1.47      anton     732: under+ ( n1 n2 n3 -- n n2 )    gforth  under_plus
1.29      crook     733: ""add @i{n3} to @i{n1} (giving @i{n})""
1.1       anton     734: n = n1+n3;
                    735: :
                    736:  rot + swap ;
                    737: 
1.47      anton     738: -      ( n1 n2 -- n )          core    minus
1.1       anton     739: n = n1-n2;
                    740: :
                    741:  negate + ;
                    742: 
1.47      anton     743: negate ( n1 -- n2 )            core
1.1       anton     744: /* use minus as alias */
                    745: n2 = -n1;
                    746: :
                    747:  invert 1+ ;
                    748: 
1.47      anton     749: 1+     ( n1 -- n2 )            core            one_plus
1.1       anton     750: n2 = n1+1;
                    751: :
                    752:  1 + ;
                    753: 
1.47      anton     754: 1-     ( n1 -- n2 )            core            one_minus
1.1       anton     755: n2 = n1-1;
                    756: :
                    757:  1 - ;
                    758: 
1.47      anton     759: max    ( n1 n2 -- n )  core
1.1       anton     760: if (n1<n2)
                    761:   n = n2;
                    762: else
                    763:   n = n1;
                    764: :
                    765:  2dup < IF swap THEN drop ;
                    766: 
1.47      anton     767: min    ( n1 n2 -- n )  core
1.1       anton     768: if (n1<n2)
                    769:   n = n1;
                    770: else
                    771:   n = n2;
                    772: :
                    773:  2dup > IF swap THEN drop ;
                    774: 
1.52      anton     775: abs    ( n -- u )      core
                    776: if (n<0)
                    777:   u = -n;
1.1       anton     778: else
1.52      anton     779:   u = n;
1.1       anton     780: :
                    781:  dup 0< IF negate THEN ;
                    782: 
1.47      anton     783: *      ( n1 n2 -- n )          core    star
1.1       anton     784: n = n1*n2;
                    785: :
                    786:  um* drop ;
                    787: 
1.47      anton     788: /      ( n1 n2 -- n )          core    slash
1.1       anton     789: n = n1/n2;
                    790: :
                    791:  /mod nip ;
                    792: 
1.47      anton     793: mod    ( n1 n2 -- n )          core
1.1       anton     794: n = n1%n2;
                    795: :
                    796:  /mod drop ;
                    797: 
1.47      anton     798: /mod   ( n1 n2 -- n3 n4 )              core            slash_mod
1.1       anton     799: n4 = n1/n2;
                    800: n3 = n1%n2; /* !! is this correct? look into C standard! */
                    801: :
                    802:  >r s>d r> fm/mod ;
                    803: 
1.47      anton     804: 2*     ( n1 -- n2 )            core            two_star
1.52      anton     805: ""Shift left by 1; also works on unsigned numbers""
1.1       anton     806: n2 = 2*n1;
                    807: :
                    808:  dup + ;
                    809: 
1.47      anton     810: 2/     ( n1 -- n2 )            core            two_slash
1.52      anton     811: ""Arithmetic shift right by 1.  For signed numbers this is a floored
                    812: division by 2 (note that @code{/} not necessarily floors).""
1.1       anton     813: n2 = n1>>1;
                    814: :
                    815:  dup MINI and IF 1 ELSE 0 THEN
                    816:  [ bits/byte cell * 1- ] literal 
1.5       jwilke    817:  0 DO 2* swap dup 2* >r MINI and 
1.1       anton     818:      IF 1 ELSE 0 THEN or r> swap
                    819:  LOOP nip ;
                    820: 
1.47      anton     821: fm/mod ( d1 n1 -- n2 n3 )              core            f_m_slash_mod
1.29      crook     822: ""Floored division: @i{d1} = @i{n3}*@i{n1}+@i{n2}, @i{n1}>@i{n2}>=0 or 0>=@i{n2}>@i{n1}.""
1.1       anton     823: #ifdef BUGGY_LONG_LONG
                    824: DCell r = fmdiv(d1,n1);
                    825: n2=r.hi;
                    826: n3=r.lo;
                    827: #else
                    828: /* assumes that the processor uses either floored or symmetric division */
                    829: n3 = d1/n1;
                    830: n2 = d1%n1;
                    831: /* note that this 1%-3>0 is optimized by the compiler */
                    832: if (1%-3>0 && (d1<0) != (n1<0) && n2!=0) {
                    833:   n3--;
                    834:   n2+=n1;
                    835: }
                    836: #endif
                    837: :
                    838:  dup >r dup 0< IF  negate >r dnegate r>  THEN
                    839:  over       0< IF  tuck + swap  THEN
                    840:  um/mod
                    841:  r> 0< IF  swap negate swap  THEN ;
                    842: 
1.47      anton     843: sm/rem ( d1 n1 -- n2 n3 )              core            s_m_slash_rem
1.29      crook     844: ""Symmetric division: @i{d1} = @i{n3}*@i{n1}+@i{n2}, sign(@i{n2})=sign(@i{d1}) or 0.""
1.1       anton     845: #ifdef BUGGY_LONG_LONG
                    846: DCell r = smdiv(d1,n1);
                    847: n2=r.hi;
                    848: n3=r.lo;
                    849: #else
                    850: /* assumes that the processor uses either floored or symmetric division */
                    851: n3 = d1/n1;
                    852: n2 = d1%n1;
                    853: /* note that this 1%-3<0 is optimized by the compiler */
                    854: if (1%-3<0 && (d1<0) != (n1<0) && n2!=0) {
                    855:   n3++;
                    856:   n2-=n1;
                    857: }
                    858: #endif
                    859: :
                    860:  over >r dup >r abs -rot
                    861:  dabs rot um/mod
                    862:  r> r@ xor 0< IF       negate       THEN
                    863:  r>        0< IF  swap negate swap  THEN ;
                    864: 
1.47      anton     865: m*     ( n1 n2 -- d )          core    m_star
1.1       anton     866: #ifdef BUGGY_LONG_LONG
                    867: d = mmul(n1,n2);
                    868: #else
                    869: d = (DCell)n1 * (DCell)n2;
                    870: #endif
                    871: :
                    872:  2dup      0< and >r
                    873:  2dup swap 0< and >r
                    874:  um* r> - r> - ;
                    875: 
1.47      anton     876: um*    ( u1 u2 -- ud )         core    u_m_star
1.1       anton     877: /* use u* as alias */
                    878: #ifdef BUGGY_LONG_LONG
                    879: ud = ummul(u1,u2);
                    880: #else
                    881: ud = (UDCell)u1 * (UDCell)u2;
                    882: #endif
                    883: :
1.137     pazsan    884:    0 -rot dup [ 8 cells ] literal -
1.1       anton     885:    DO
1.137     pazsan    886:        dup 0< I' and d2*+ drop
                    887:    LOOP ;
1.1       anton     888: : d2*+ ( ud n -- ud+n c )
                    889:    over MINI
                    890:    and >r >r 2dup d+ swap r> + swap r> ;
                    891: 
1.47      anton     892: um/mod ( ud u1 -- u2 u3 )              core    u_m_slash_mod
1.32      anton     893: ""ud=u3*u1+u2, u1>u2>=0""
1.1       anton     894: #ifdef BUGGY_LONG_LONG
                    895: UDCell r = umdiv(ud,u1);
                    896: u2=r.hi;
                    897: u3=r.lo;
                    898: #else
                    899: u3 = ud/u1;
                    900: u2 = ud%u1;
                    901: #endif
                    902: :
                    903:    0 swap [ 8 cells 1 + ] literal 0
1.5       jwilke    904:    ?DO /modstep
1.1       anton     905:    LOOP drop swap 1 rshift or swap ;
                    906: : /modstep ( ud c R: u -- ud-?u c R: u )
1.5       jwilke    907:    >r over r@ u< 0= or IF r@ - 1 ELSE 0 THEN  d2*+ r> ;
1.1       anton     908: : d2*+ ( ud n -- ud+n c )
                    909:    over MINI
                    910:    and >r >r 2dup d+ swap r> + swap r> ;
                    911: 
1.47      anton     912: m+     ( d1 n -- d2 )          double          m_plus
1.1       anton     913: #ifdef BUGGY_LONG_LONG
                    914: d2.lo = d1.lo+n;
                    915: d2.hi = d1.hi - (n<0) + (d2.lo<d1.lo);
                    916: #else
                    917: d2 = d1+n;
                    918: #endif
                    919: :
                    920:  s>d d+ ;
                    921: 
1.47      anton     922: d+     ( d1 d2 -- d )          double  d_plus
1.1       anton     923: #ifdef BUGGY_LONG_LONG
                    924: d.lo = d1.lo+d2.lo;
                    925: d.hi = d1.hi + d2.hi + (d.lo<d1.lo);
                    926: #else
                    927: d = d1+d2;
                    928: #endif
                    929: :
                    930:  rot + >r tuck + swap over u> r> swap - ;
                    931: 
1.47      anton     932: d-     ( d1 d2 -- d )          double          d_minus
1.1       anton     933: #ifdef BUGGY_LONG_LONG
                    934: d.lo = d1.lo - d2.lo;
                    935: d.hi = d1.hi-d2.hi-(d1.lo<d2.lo);
                    936: #else
                    937: d = d1-d2;
                    938: #endif
                    939: :
                    940:  dnegate d+ ;
                    941: 
1.47      anton     942: dnegate        ( d1 -- d2 )            double  d_negate
1.1       anton     943: /* use dminus as alias */
                    944: #ifdef BUGGY_LONG_LONG
                    945: d2 = dnegate(d1);
                    946: #else
                    947: d2 = -d1;
                    948: #endif
                    949: :
                    950:  invert swap negate tuck 0= - ;
                    951: 
1.47      anton     952: d2*    ( d1 -- d2 )            double          d_two_star
1.52      anton     953: ""Shift left by 1; also works on unsigned numbers""
1.1       anton     954: #ifdef BUGGY_LONG_LONG
                    955: d2.lo = d1.lo<<1;
                    956: d2.hi = (d1.hi<<1) | (d1.lo>>(CELL_BITS-1));
                    957: #else
                    958: d2 = 2*d1;
                    959: #endif
                    960: :
                    961:  2dup d+ ;
                    962: 
1.47      anton     963: d2/    ( d1 -- d2 )            double          d_two_slash
1.52      anton     964: ""Arithmetic shift right by 1.  For signed numbers this is a floored
                    965: division by 2.""
1.1       anton     966: #ifdef BUGGY_LONG_LONG
                    967: d2.hi = d1.hi>>1;
                    968: d2.lo= (d1.lo>>1) | (d1.hi<<(CELL_BITS-1));
                    969: #else
                    970: d2 = d1>>1;
                    971: #endif
                    972: :
                    973:  dup 1 and >r 2/ swap 2/ [ 1 8 cells 1- lshift 1- ] Literal and
                    974:  r> IF  [ 1 8 cells 1- lshift ] Literal + THEN  swap ;
                    975: 
1.47      anton     976: and    ( w1 w2 -- w )          core
1.1       anton     977: w = w1&w2;
                    978: 
1.47      anton     979: or     ( w1 w2 -- w )          core
1.1       anton     980: w = w1|w2;
                    981: :
                    982:  invert swap invert and invert ;
                    983: 
1.47      anton     984: xor    ( w1 w2 -- w )          core    x_or
1.1       anton     985: w = w1^w2;
                    986: 
1.47      anton     987: invert ( w1 -- w2 )            core
1.1       anton     988: w2 = ~w1;
                    989: :
                    990:  MAXU xor ;
                    991: 
1.47      anton     992: rshift ( u1 n -- u2 )          core    r_shift
1.53      anton     993: ""Logical shift right by @i{n} bits.""
1.154     pazsan    994: #ifdef BROKEN_SHIFT
                    995:   u2 = rshift(u1, n);
                    996: #else
                    997:   u2 = u1 >> n;
                    998: #endif
1.1       anton     999: :
                   1000:     0 ?DO 2/ MAXI and LOOP ;
                   1001: 
1.47      anton    1002: lshift ( u1 n -- u2 )          core    l_shift
1.154     pazsan   1003: #ifdef BROKEN_SHIFT
                   1004:   u2 = lshift(u1, n);
                   1005: #else
                   1006:   u2 = u1 << n;
                   1007: #endif
1.1       anton    1008: :
                   1009:     0 ?DO 2* LOOP ;
                   1010: 
1.110     pazsan   1011: \g compare
                   1012: 
1.1       anton    1013: \ comparisons(prefix, args, prefix, arg1, arg2, wordsets...)
                   1014: define(comparisons,
1.47      anton    1015: $1=    ( $2 -- f )             $6      $3equals
1.1       anton    1016: f = FLAG($4==$5);
                   1017: :
                   1018:     [ char $1x char 0 = [IF]
                   1019:        ] IF false ELSE true THEN [
                   1020:     [ELSE]
                   1021:        ] xor 0= [
                   1022:     [THEN] ] ;
                   1023: 
1.47      anton    1024: $1<>   ( $2 -- f )             $7      $3not_equals
1.1       anton    1025: f = FLAG($4!=$5);
                   1026: :
                   1027:     [ char $1x char 0 = [IF]
                   1028:        ] IF true ELSE false THEN [
                   1029:     [ELSE]
                   1030:        ] xor 0<> [
                   1031:     [THEN] ] ;
                   1032: 
1.47      anton    1033: $1<    ( $2 -- f )             $8      $3less_than
1.1       anton    1034: f = FLAG($4<$5);
                   1035: :
                   1036:     [ char $1x char 0 = [IF]
                   1037:        ] MINI and 0<> [
                   1038:     [ELSE] char $1x char u = [IF]
                   1039:        ]   2dup xor 0<  IF nip ELSE - THEN 0<  [
                   1040:        [ELSE]
                   1041:            ] MINI xor >r MINI xor r> u< [
                   1042:        [THEN]
                   1043:     [THEN] ] ;
                   1044: 
1.47      anton    1045: $1>    ( $2 -- f )             $9      $3greater_than
1.1       anton    1046: f = FLAG($4>$5);
                   1047: :
                   1048:     [ char $1x char 0 = [IF] ] negate [ [ELSE] ] swap [ [THEN] ]
                   1049:     $1< ;
                   1050: 
1.47      anton    1051: $1<=   ( $2 -- f )             gforth  $3less_or_equal
1.1       anton    1052: f = FLAG($4<=$5);
                   1053: :
                   1054:     $1> 0= ;
                   1055: 
1.47      anton    1056: $1>=   ( $2 -- f )             gforth  $3greater_or_equal
1.1       anton    1057: f = FLAG($4>=$5);
                   1058: :
                   1059:     [ char $1x char 0 = [IF] ] negate [ [ELSE] ] swap [ [THEN] ]
                   1060:     $1<= ;
                   1061: 
                   1062: )
                   1063: 
                   1064: comparisons(0, n, zero_, n, 0, core, core-ext, core, core-ext)
                   1065: comparisons(, n1 n2, , n1, n2, core, core-ext, core, core)
                   1066: comparisons(u, u1 u2, u_, u1, u2, gforth, gforth, core, core-ext)
                   1067: 
                   1068: \ dcomparisons(prefix, args, prefix, arg1, arg2, wordsets...)
                   1069: define(dcomparisons,
1.47      anton    1070: $1=    ( $2 -- f )             $6      $3equals
1.1       anton    1071: #ifdef BUGGY_LONG_LONG
                   1072: f = FLAG($4.lo==$5.lo && $4.hi==$5.hi);
                   1073: #else
                   1074: f = FLAG($4==$5);
                   1075: #endif
                   1076: 
1.47      anton    1077: $1<>   ( $2 -- f )             $7      $3not_equals
1.1       anton    1078: #ifdef BUGGY_LONG_LONG
                   1079: f = FLAG($4.lo!=$5.lo || $4.hi!=$5.hi);
                   1080: #else
                   1081: f = FLAG($4!=$5);
                   1082: #endif
                   1083: 
1.47      anton    1084: $1<    ( $2 -- f )             $8      $3less_than
1.1       anton    1085: #ifdef BUGGY_LONG_LONG
                   1086: f = FLAG($4.hi==$5.hi ? $4.lo<$5.lo : $4.hi<$5.hi);
                   1087: #else
                   1088: f = FLAG($4<$5);
                   1089: #endif
                   1090: 
1.47      anton    1091: $1>    ( $2 -- f )             $9      $3greater_than
1.1       anton    1092: #ifdef BUGGY_LONG_LONG
                   1093: f = FLAG($4.hi==$5.hi ? $4.lo>$5.lo : $4.hi>$5.hi);
                   1094: #else
                   1095: f = FLAG($4>$5);
                   1096: #endif
                   1097: 
1.47      anton    1098: $1<=   ( $2 -- f )             gforth  $3less_or_equal
1.1       anton    1099: #ifdef BUGGY_LONG_LONG
                   1100: f = FLAG($4.hi==$5.hi ? $4.lo<=$5.lo : $4.hi<=$5.hi);
                   1101: #else
                   1102: f = FLAG($4<=$5);
                   1103: #endif
                   1104: 
1.47      anton    1105: $1>=   ( $2 -- f )             gforth  $3greater_or_equal
1.1       anton    1106: #ifdef BUGGY_LONG_LONG
                   1107: f = FLAG($4.hi==$5.hi ? $4.lo>=$5.lo : $4.hi>=$5.hi);
                   1108: #else
                   1109: f = FLAG($4>=$5);
                   1110: #endif
                   1111: 
                   1112: )
                   1113: 
1.15      pazsan   1114: \+dcomps
1.1       anton    1115: 
                   1116: dcomparisons(d, d1 d2, d_, d1, d2, double, gforth, double, gforth)
                   1117: dcomparisons(d0, d, d_zero_, d, DZERO, double, gforth, double, gforth)
                   1118: dcomparisons(du, ud1 ud2, d_u_, ud1, ud2, gforth, gforth, double-ext, gforth)
                   1119: 
1.15      pazsan   1120: \+
1.1       anton    1121: 
1.47      anton    1122: within ( u1 u2 u3 -- f )               core-ext
1.32      anton    1123: ""u2=<u1<u3 or: u3=<u2 and u1 is not in [u3,u2).  This works for
                   1124: unsigned and signed numbers (but not a mixture).  Another way to think
                   1125: about this word is to consider the numbers as a circle (wrapping
                   1126: around from @code{max-u} to 0 for unsigned, and from @code{max-n} to
                   1127: min-n for signed numbers); now consider the range from u2 towards
                   1128: increasing numbers up to and excluding u3 (giving an empty range if
1.52      anton    1129: u2=u3); if u1 is in this range, @code{within} returns true.""
1.1       anton    1130: f = FLAG(u1-u2 < u3-u2);
                   1131: :
                   1132:  over - >r - r> u< ;
                   1133: 
1.112     pazsan   1134: \g stack
                   1135: 
                   1136: useraddr       ( #u -- a_addr )        new
                   1137: a_addr = (Cell *)(up+u);
                   1138: 
                   1139: up!    ( a_addr -- )   gforth  up_store
                   1140: UP=up=(char *)a_addr;
                   1141: :
                   1142:  up ! ;
                   1143: Variable UP
                   1144: 
1.47      anton    1145: sp@    ( -- a_addr )           gforth          sp_fetch
1.1       anton    1146: a_addr = sp+1;
                   1147: 
1.47      anton    1148: sp!    ( a_addr -- )           gforth          sp_store
1.1       anton    1149: sp = a_addr;
1.64      anton    1150: /* works with and without spTOS caching */
1.1       anton    1151: 
1.47      anton    1152: rp@    ( -- a_addr )           gforth          rp_fetch
1.1       anton    1153: a_addr = rp;
                   1154: 
1.47      anton    1155: rp!    ( a_addr -- )           gforth          rp_store
1.1       anton    1156: rp = a_addr;
                   1157: 
1.15      pazsan   1158: \+floating
1.1       anton    1159: 
1.47      anton    1160: fp@    ( -- f_addr )   gforth  fp_fetch
1.1       anton    1161: f_addr = fp;
                   1162: 
1.47      anton    1163: fp!    ( f_addr -- )   gforth  fp_store
1.1       anton    1164: fp = f_addr;
                   1165: 
1.15      pazsan   1166: \+
1.1       anton    1167: 
1.65      anton    1168: >r     ( w -- R:w )            core    to_r
1.1       anton    1169: :
                   1170:  (>r) ;
                   1171: : (>r)  rp@ cell+ @ rp@ ! rp@ cell+ ! ;
                   1172: 
1.65      anton    1173: r>     ( R:w -- w )            core    r_from
1.1       anton    1174: :
                   1175:  rp@ cell+ @ rp@ @ rp@ cell+ ! (rdrop) rp@ ! ;
                   1176: Create (rdrop) ' ;s A,
                   1177: 
1.65      anton    1178: rdrop  ( R:w -- )              gforth
1.1       anton    1179: :
                   1180:  r> r> drop >r ;
                   1181: 
1.136     pazsan   1182: 2>r    ( d -- R:d )    core-ext        two_to_r
1.1       anton    1183: :
                   1184:  swap r> swap >r swap >r >r ;
                   1185: 
1.136     pazsan   1186: 2r>    ( R:d -- d )    core-ext        two_r_from
1.1       anton    1187: :
                   1188:  r> r> swap r> swap >r swap ;
                   1189: 
1.136     pazsan   1190: 2r@    ( R:d -- R:d d )        core-ext        two_r_fetch
1.1       anton    1191: :
                   1192:  i' j ;
                   1193: 
1.136     pazsan   1194: 2rdrop ( R:d -- )              gforth  two_r_drop
1.1       anton    1195: :
                   1196:  r> r> drop r> drop >r ;
                   1197: 
1.47      anton    1198: over   ( w1 w2 -- w1 w2 w1 )           core
1.1       anton    1199: :
                   1200:  sp@ cell+ @ ;
                   1201: 
1.47      anton    1202: drop   ( w -- )                core
1.1       anton    1203: :
                   1204:  IF THEN ;
                   1205: 
1.47      anton    1206: swap   ( w1 w2 -- w2 w1 )              core
1.1       anton    1207: :
                   1208:  >r (swap) ! r> (swap) @ ;
                   1209: Variable (swap)
                   1210: 
1.47      anton    1211: dup    ( w -- w w )            core    dupe
1.1       anton    1212: :
                   1213:  sp@ @ ;
                   1214: 
1.47      anton    1215: rot    ( w1 w2 w3 -- w2 w3 w1 )        core    rote
1.1       anton    1216: :
                   1217: [ defined? (swap) [IF] ]
                   1218:     (swap) ! (rot) ! >r (rot) @ (swap) @ r> ;
                   1219: Variable (rot)
                   1220: [ELSE] ]
                   1221:     >r swap r> swap ;
                   1222: [THEN]
                   1223: 
1.47      anton    1224: -rot   ( w1 w2 w3 -- w3 w1 w2 )        gforth  not_rote
1.1       anton    1225: :
                   1226:  rot rot ;
                   1227: 
1.47      anton    1228: nip    ( w1 w2 -- w2 )         core-ext
1.1       anton    1229: :
1.6       jwilke   1230:  swap drop ;
1.1       anton    1231: 
1.47      anton    1232: tuck   ( w1 w2 -- w2 w1 w2 )   core-ext
1.1       anton    1233: :
                   1234:  swap over ;
                   1235: 
1.47      anton    1236: ?dup   ( w -- w )                      core    question_dupe
1.52      anton    1237: ""Actually the stack effect is: @code{( w -- 0 | w w )}.  It performs a
                   1238: @code{dup} if w is nonzero.""
1.1       anton    1239: if (w!=0) {
1.64      anton    1240:   IF_spTOS(*sp-- = w;)
1.1       anton    1241: #ifndef USE_TOS
                   1242:   *--sp = w;
                   1243: #endif
                   1244: }
                   1245: :
                   1246:  dup IF dup THEN ;
                   1247: 
1.47      anton    1248: pick   ( u -- w )                      core-ext
1.52      anton    1249: ""Actually the stack effect is @code{ x0 ... xu u -- x0 ... xu x0 }.""
1.1       anton    1250: w = sp[u+1];
                   1251: :
                   1252:  1+ cells sp@ + @ ;
                   1253: 
1.47      anton    1254: 2drop  ( w1 w2 -- )            core    two_drop
1.1       anton    1255: :
                   1256:  drop drop ;
                   1257: 
1.47      anton    1258: 2dup   ( w1 w2 -- w1 w2 w1 w2 )        core    two_dupe
1.1       anton    1259: :
                   1260:  over over ;
                   1261: 
1.47      anton    1262: 2over  ( w1 w2 w3 w4 -- w1 w2 w3 w4 w1 w2 )    core    two_over
1.1       anton    1263: :
                   1264:  3 pick 3 pick ;
                   1265: 
1.47      anton    1266: 2swap  ( w1 w2 w3 w4 -- w3 w4 w1 w2 )  core    two_swap
1.1       anton    1267: :
                   1268:  rot >r rot r> ;
                   1269: 
1.47      anton    1270: 2rot   ( w1 w2 w3 w4 w5 w6 -- w3 w4 w5 w6 w1 w2 )      double-ext      two_rote
1.1       anton    1271: :
                   1272:  >r >r 2swap r> r> 2swap ;
                   1273: 
1.47      anton    1274: 2nip   ( w1 w2 w3 w4 -- w3 w4 )        gforth  two_nip
1.1       anton    1275: :
                   1276:  2swap 2drop ;
                   1277: 
1.47      anton    1278: 2tuck  ( w1 w2 w3 w4 -- w3 w4 w1 w2 w3 w4 )    gforth  two_tuck
1.1       anton    1279: :
                   1280:  2swap 2over ;
                   1281: 
                   1282: \ toggle is high-level: 0.11/0.42%
                   1283: 
1.110     pazsan   1284: \g memory
                   1285: 
1.47      anton    1286: @      ( a_addr -- w )         core    fetch
1.52      anton    1287: ""@i{w} is the cell stored at @i{a_addr}.""
1.1       anton    1288: w = *a_addr;
                   1289: 
1.112     pazsan   1290: \ lit@ / lit_fetch = lit @
                   1291: 
                   1292: lit@           ( #a_addr -- w ) new    lit_fetch
                   1293: w = *a_addr;
                   1294: 
1.47      anton    1295: !      ( w a_addr -- )         core    store
1.52      anton    1296: ""Store @i{w} into the cell at @i{a-addr}.""
1.1       anton    1297: *a_addr = w;
                   1298: 
1.47      anton    1299: +!     ( n a_addr -- )         core    plus_store
1.52      anton    1300: ""Add @i{n} to the cell at @i{a-addr}.""
1.1       anton    1301: *a_addr += n;
                   1302: :
                   1303:  tuck @ + swap ! ;
                   1304: 
1.47      anton    1305: c@     ( c_addr -- c )         core    c_fetch
1.52      anton    1306: ""@i{c} is the char stored at @i{c_addr}.""
1.1       anton    1307: c = *c_addr;
                   1308: :
                   1309: [ bigendian [IF] ]
                   1310:     [ cell>bit 4 = [IF] ]
                   1311:        dup [ 0 cell - ] Literal and @ swap 1 and
                   1312:        IF  $FF and  ELSE  8>>  THEN  ;
                   1313:     [ [ELSE] ]
                   1314:        dup [ cell 1- ] literal and
                   1315:        tuck - @ swap [ cell 1- ] literal xor
                   1316:        0 ?DO 8>> LOOP $FF and
                   1317:     [ [THEN] ]
                   1318: [ [ELSE] ]
                   1319:     [ cell>bit 4 = [IF] ]
                   1320:        dup [ 0 cell - ] Literal and @ swap 1 and
                   1321:        IF  8>>  ELSE  $FF and  THEN
                   1322:     [ [ELSE] ]
                   1323:        dup [ cell  1- ] literal and 
                   1324:        tuck - @ swap
                   1325:        0 ?DO 8>> LOOP 255 and
                   1326:     [ [THEN] ]
                   1327: [ [THEN] ]
                   1328: ;
                   1329: : 8>> 2/ 2/ 2/ 2/  2/ 2/ 2/ 2/ ;
                   1330: 
1.47      anton    1331: c!     ( c c_addr -- )         core    c_store
1.52      anton    1332: ""Store @i{c} into the char at @i{c-addr}.""
1.1       anton    1333: *c_addr = c;
                   1334: :
                   1335: [ bigendian [IF] ]
                   1336:     [ cell>bit 4 = [IF] ]
                   1337:        tuck 1 and IF  $FF and  ELSE  8<<  THEN >r
                   1338:        dup -2 and @ over 1 and cells masks + @ and
                   1339:        r> or swap -2 and ! ;
                   1340:        Create masks $00FF , $FF00 ,
                   1341:     [ELSE] ]
                   1342:        dup [ cell 1- ] literal and dup 
                   1343:        [ cell 1- ] literal xor >r
                   1344:        - dup @ $FF r@ 0 ?DO 8<< LOOP invert and
                   1345:        rot $FF and r> 0 ?DO 8<< LOOP or swap ! ;
                   1346:     [THEN]
                   1347: [ELSE] ]
                   1348:     [ cell>bit 4 = [IF] ]
                   1349:        tuck 1 and IF  8<<  ELSE  $FF and  THEN >r
                   1350:        dup -2 and @ over 1 and cells masks + @ and
                   1351:        r> or swap -2 and ! ;
                   1352:        Create masks $FF00 , $00FF ,
                   1353:     [ELSE] ]
                   1354:        dup [ cell 1- ] literal and dup >r
                   1355:        - dup @ $FF r@ 0 ?DO 8<< LOOP invert and
                   1356:        rot $FF and r> 0 ?DO 8<< LOOP or swap ! ;
                   1357:     [THEN]
                   1358: [THEN]
                   1359: : 8<< 2* 2* 2* 2*  2* 2* 2* 2* ;
                   1360: 
1.47      anton    1361: 2!     ( w1 w2 a_addr -- )             core    two_store
1.52      anton    1362: ""Store @i{w2} into the cell at @i{c-addr} and @i{w1} into the next cell.""
1.1       anton    1363: a_addr[0] = w2;
                   1364: a_addr[1] = w1;
                   1365: :
                   1366:  tuck ! cell+ ! ;
                   1367: 
1.47      anton    1368: 2@     ( a_addr -- w1 w2 )             core    two_fetch
1.52      anton    1369: ""@i{w2} is the content of the cell stored at @i{a-addr}, @i{w1} is
                   1370: the content of the next cell.""
1.1       anton    1371: w2 = a_addr[0];
                   1372: w1 = a_addr[1];
                   1373: :
                   1374:  dup cell+ @ swap @ ;
                   1375: 
1.47      anton    1376: cell+  ( a_addr1 -- a_addr2 )  core    cell_plus
1.52      anton    1377: ""@code{1 cells +}""
1.1       anton    1378: a_addr2 = a_addr1+1;
                   1379: :
                   1380:  cell + ;
                   1381: 
1.47      anton    1382: cells  ( n1 -- n2 )            core
1.52      anton    1383: "" @i{n2} is the number of address units of @i{n1} cells.""
1.1       anton    1384: n2 = n1 * sizeof(Cell);
                   1385: :
                   1386:  [ cell
                   1387:  2/ dup [IF] ] 2* [ [THEN]
                   1388:  2/ dup [IF] ] 2* [ [THEN]
                   1389:  2/ dup [IF] ] 2* [ [THEN]
                   1390:  2/ dup [IF] ] 2* [ [THEN]
                   1391:  drop ] ;
                   1392: 
1.47      anton    1393: char+  ( c_addr1 -- c_addr2 )  core    char_plus
1.52      anton    1394: ""@code{1 chars +}.""
1.1       anton    1395: c_addr2 = c_addr1 + 1;
                   1396: :
                   1397:  1+ ;
                   1398: 
1.47      anton    1399: (chars)        ( n1 -- n2 )    gforth  paren_chars
1.1       anton    1400: n2 = n1 * sizeof(Char);
                   1401: :
                   1402:  ;
                   1403: 
1.47      anton    1404: count  ( c_addr1 -- c_addr2 u )        core
1.56      anton    1405: ""@i{c-addr2} is the first character and @i{u} the length of the
                   1406: counted string at @i{c-addr1}.""
1.1       anton    1407: u = *c_addr1;
                   1408: c_addr2 = c_addr1+1;
                   1409: :
                   1410:  dup 1+ swap c@ ;
                   1411: 
1.110     pazsan   1412: \g compiler
                   1413: 
1.138     pazsan   1414: \+f83headerstring
                   1415: 
                   1416: (f83find)      ( c_addr u f83name1 -- f83name2 )       new     paren_f83find
                   1417: for (; f83name1 != NULL; f83name1 = (struct F83Name *)(f83name1->next))
                   1418:   if ((UCell)F83NAME_COUNT(f83name1)==u &&
                   1419:       memcasecmp(c_addr, f83name1->name, u)== 0 /* or inline? */)
                   1420:     break;
                   1421: f83name2=f83name1;
                   1422: :
                   1423:     BEGIN  dup WHILE  (find-samelen)  dup  WHILE
                   1424:        >r 2dup r@ cell+ char+ capscomp  0=
                   1425:        IF  2drop r>  EXIT  THEN
                   1426:        r> @
                   1427:     REPEAT  THEN  nip nip ;
                   1428: : (find-samelen) ( u f83name1 -- u f83name2/0 )
                   1429:     BEGIN  2dup cell+ c@ $1F and <> WHILE  @  dup 0= UNTIL  THEN ;
                   1430: : capscomp ( c_addr1 u c_addr2 -- n )
                   1431:  swap bounds
                   1432:  ?DO  dup c@ I c@ <>
                   1433:      IF  dup c@ toupper I c@ toupper =
                   1434:      ELSE  true  THEN  WHILE  1+  LOOP  drop 0
                   1435:  ELSE  c@ toupper I c@ toupper - unloop  THEN  sgn ;
                   1436: : sgn ( n -- -1/0/1 )
                   1437:  dup 0= IF EXIT THEN  0< 2* 1+ ;
                   1438: 
                   1439: \-
                   1440: 
1.112     pazsan   1441: (listlfind)    ( c_addr u longname1 -- longname2 )     new     paren_listlfind
1.125     anton    1442: longname2=listlfind(c_addr, u, longname1);
1.1       anton    1443: :
1.112     pazsan   1444:     BEGIN  dup WHILE  (findl-samelen)  dup  WHILE
                   1445:        >r 2dup r@ cell+ cell+ capscomp  0=
1.1       anton    1446:        IF  2drop r>  EXIT  THEN
                   1447:        r> @
                   1448:     REPEAT  THEN  nip nip ;
1.112     pazsan   1449: : (findl-samelen) ( u longname1 -- u longname2/0 )
                   1450:     BEGIN  2dup cell+ @ lcount-mask and <> WHILE  @  dup 0= UNTIL  THEN ;
1.144     pazsan   1451: : capscomp ( c_addr1 u c_addr2 -- n )
                   1452:  swap bounds
                   1453:  ?DO  dup c@ I c@ <>
                   1454:      IF  dup c@ toupper I c@ toupper =
                   1455:      ELSE  true  THEN  WHILE  1+  LOOP  drop 0
                   1456:  ELSE  c@ toupper I c@ toupper - unloop  THEN  sgn ;
                   1457: : sgn ( n -- -1/0/1 )
                   1458:  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton    1459: 
1.15      pazsan   1460: \+hash
1.1       anton    1461: 
1.112     pazsan   1462: (hashlfind)    ( c_addr u a_addr -- longname2 )        new     paren_hashlfind
1.125     anton    1463: longname2 = hashlfind(c_addr, u, a_addr);
1.1       anton    1464: :
                   1465:  BEGIN  dup  WHILE
1.112     pazsan   1466:         2@ >r >r dup r@ cell+ @ lcount-mask and =
                   1467:         IF  2dup r@ cell+ cell+ capscomp 0=
1.1       anton    1468:            IF  2drop r> rdrop  EXIT  THEN  THEN
                   1469:        rdrop r>
                   1470:  REPEAT nip nip ;
                   1471: 
1.112     pazsan   1472: (tablelfind)   ( c_addr u a_addr -- longname2 )        new     paren_tablelfind
1.1       anton    1473: ""A case-sensitive variant of @code{(hashfind)}""
1.125     anton    1474: longname2 = tablelfind(c_addr, u, a_addr);
1.1       anton    1475: :
                   1476:  BEGIN  dup  WHILE
1.112     pazsan   1477:         2@ >r >r dup r@ cell+ @ lcount-mask and =
                   1478:         IF  2dup r@ cell+ cell+ -text 0=
1.1       anton    1479:            IF  2drop r> rdrop  EXIT  THEN  THEN
                   1480:        rdrop r>
                   1481:  REPEAT nip nip ;
1.138     pazsan   1482: : -text ( c_addr1 u c_addr2 -- n )
                   1483:  swap bounds
                   1484:  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                   1485:  ELSE  c@ I c@ - unloop  THEN  sgn ;
                   1486: : sgn ( n -- -1/0/1 )
                   1487:  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton    1488: 
1.47      anton    1489: (hashkey1)     ( c_addr u ubits -- ukey )              gforth  paren_hashkey1
1.1       anton    1490: ""ukey is the hash key for the string c_addr u fitting in ubits bits""
1.125     anton    1491: ukey = hashkey1(c_addr, u, ubits);
1.1       anton    1492: :
                   1493:  dup rot-values + c@ over 1 swap lshift 1- >r
                   1494:  tuck - 2swap r> 0 2swap bounds
                   1495:  ?DO  dup 4 pick lshift swap 3 pick rshift or
                   1496:       I c@ toupper xor
                   1497:       over and  LOOP
                   1498:  nip nip nip ;
                   1499: Create rot-values
                   1500:   5 c, 0 c, 1 c, 2 c, 3 c,  4 c, 5 c, 5 c, 5 c, 5 c,
                   1501:   3 c, 5 c, 5 c, 5 c, 5 c,  7 c, 5 c, 5 c, 5 c, 5 c,
                   1502:   7 c, 5 c, 5 c, 5 c, 5 c,  6 c, 5 c, 5 c, 5 c, 5 c,
                   1503:   7 c, 5 c, 5 c,
1.138     pazsan   1504: 
                   1505: \+
1.1       anton    1506: 
1.15      pazsan   1507: \+
1.1       anton    1508: 
1.47      anton    1509: (parse-white)  ( c_addr1 u1 -- c_addr2 u2 )    gforth  paren_parse_white
1.125     anton    1510: struct Cellpair r=parse_white(c_addr1, u1);
                   1511: c_addr2 = (Char *)(r.n1);
                   1512: u2 = r.n2;
1.1       anton    1513: :
                   1514:  BEGIN  dup  WHILE  over c@ bl <=  WHILE  1 /string
                   1515:  REPEAT  THEN  2dup
                   1516:  BEGIN  dup  WHILE  over c@ bl >   WHILE  1 /string
                   1517:  REPEAT  THEN  nip - ;
                   1518: 
1.47      anton    1519: aligned        ( c_addr -- a_addr )    core
1.29      crook    1520: "" @i{a-addr} is the first aligned address greater than or equal to @i{c-addr}.""
1.1       anton    1521: a_addr = (Cell *)((((Cell)c_addr)+(sizeof(Cell)-1))&(-sizeof(Cell)));
                   1522: :
                   1523:  [ cell 1- ] Literal + [ -1 cells ] Literal and ;
                   1524: 
1.47      anton    1525: faligned       ( c_addr -- f_addr )    float   f_aligned
1.29      crook    1526: "" @i{f-addr} is the first float-aligned address greater than or equal to @i{c-addr}.""
1.1       anton    1527: f_addr = (Float *)((((Cell)c_addr)+(sizeof(Float)-1))&(-sizeof(Float)));
                   1528: :
                   1529:  [ 1 floats 1- ] Literal + [ -1 floats ] Literal and ;
                   1530: 
1.35      jwilke   1531: \ threading stuff is currently only interesting if we have a compiler
                   1532: \fhas? standardthreading has? compiler and [IF]
1.47      anton    1533: threading-method       ( -- n )        gforth  threading_method
1.1       anton    1534: ""0 if the engine is direct threaded. Note that this may change during
                   1535: the lifetime of an image.""
                   1536: #if defined(DOUBLY_INDIRECT)
                   1537: n=2;
                   1538: #else
                   1539: # if defined(DIRECT_THREADED)
                   1540: n=0;
                   1541: # else
                   1542: n=1;
                   1543: # endif
                   1544: #endif
                   1545: :
                   1546:  1 ;
1.28      jwilke   1547: 
1.35      jwilke   1548: \f[THEN]
1.1       anton    1549: 
1.83      pazsan   1550: \g hostos
                   1551: 
1.47      anton    1552: key-file       ( wfileid -- n )                gforth  paren_key_file
1.17      pazsan   1553: #ifdef HAS_FILE
1.1       anton    1554: fflush(stdout);
1.12      pazsan   1555: n = key((FILE*)wfileid);
1.17      pazsan   1556: #else
                   1557: n = key(stdin);
                   1558: #endif
1.1       anton    1559: 
1.47      anton    1560: key?-file      ( wfileid -- n )                facility        key_q_file
1.17      pazsan   1561: #ifdef HAS_FILE
1.1       anton    1562: fflush(stdout);
1.12      pazsan   1563: n = key_query((FILE*)wfileid);
1.17      pazsan   1564: #else
                   1565: n = key_query(stdin);
                   1566: #endif
                   1567: 
                   1568: \+os
1.12      pazsan   1569: 
1.47      anton    1570: stdin  ( -- wfileid )  gforth
1.12      pazsan   1571: wfileid = (Cell)stdin;
1.1       anton    1572: 
1.47      anton    1573: stdout ( -- wfileid )  gforth
1.1       anton    1574: wfileid = (Cell)stdout;
                   1575: 
1.47      anton    1576: stderr ( -- wfileid )  gforth
1.1       anton    1577: wfileid = (Cell)stderr;
                   1578: 
1.47      anton    1579: form   ( -- urows ucols )      gforth
1.1       anton    1580: ""The number of lines and columns in the terminal. These numbers may change
                   1581: with the window size.""
                   1582: /* we could block SIGWINCH here to get a consistent size, but I don't
                   1583:  think this is necessary or always beneficial */
                   1584: urows=rows;
                   1585: ucols=cols;
                   1586: 
1.47      anton    1587: flush-icache   ( c_addr u -- ) gforth  flush_icache
1.1       anton    1588: ""Make sure that the instruction cache of the processor (if there is
1.29      crook    1589: one) does not contain stale data at @i{c-addr} and @i{u} bytes
1.1       anton    1590: afterwards. @code{END-CODE} performs a @code{flush-icache}
                   1591: automatically. Caveat: @code{flush-icache} might not work on your
                   1592: installation; this is usually the case if direct threading is not
                   1593: supported on your machine (take a look at your @file{machine.h}) and
                   1594: your machine has a separate instruction cache. In such cases,
                   1595: @code{flush-icache} does nothing instead of flushing the instruction
                   1596: cache.""
                   1597: FLUSH_ICACHE(c_addr,u);
                   1598: 
1.47      anton    1599: (bye)  ( n -- )        gforth  paren_bye
1.77      anton    1600: SUPER_END;
1.1       anton    1601: return (Label *)n;
                   1602: 
1.125     anton    1603: (system)       ( c_addr u -- wretval wior )    gforth  paren_system
1.155     anton    1604: wretval = gforth_system(c_addr, u);  
1.1       anton    1605: wior = IOR(wretval==-1 || (wretval==127 && errno != 0));
                   1606: 
1.47      anton    1607: getenv ( c_addr1 u1 -- c_addr2 u2 )    gforth
1.29      crook    1608: ""The string @i{c-addr1 u1} specifies an environment variable. The string @i{c-addr2 u2}
1.24      crook    1609: is the host operating system's expansion of that environment variable. If the
1.29      crook    1610: environment variable does not exist, @i{c-addr2 u2} specifies a string 0 characters
1.24      crook    1611: in length.""
1.46      pazsan   1612: /* close ' to keep fontify happy */
1.1       anton    1613: c_addr2 = getenv(cstr(c_addr1,u1,1));
                   1614: u2 = (c_addr2 == NULL ? 0 : strlen(c_addr2));
                   1615: 
1.56      anton    1616: open-pipe      ( c_addr u wfam -- wfileid wior )       gforth  open_pipe
1.84      pazsan   1617: wfileid=(Cell)popen(cstr(c_addr,u,1),pfileattr[wfam]); /* ~ expansion of 1st arg? */
1.1       anton    1618: wior = IOR(wfileid==0); /* !! the man page says that errno is not set reliably */
                   1619: 
1.47      anton    1620: close-pipe     ( wfileid -- wretval wior )             gforth  close_pipe
1.1       anton    1621: wretval = pclose((FILE *)wfileid);
                   1622: wior = IOR(wretval==-1);
                   1623: 
1.47      anton    1624: time&date      ( -- nsec nmin nhour nday nmonth nyear )        facility-ext    time_and_date
1.44      crook    1625: ""Report the current time of day. Seconds, minutes and hours are numbered from 0.
                   1626: Months are numbered from 1.""
1.127     anton    1627: #if 1
                   1628: time_t now;
                   1629: struct tm *ltime;
                   1630: time(&now);
                   1631: ltime=localtime(&now);
                   1632: #else
1.1       anton    1633: struct timeval time1;
                   1634: struct timezone zone1;
                   1635: struct tm *ltime;
                   1636: gettimeofday(&time1,&zone1);
1.51      anton    1637: /* !! Single Unix specification: 
                   1638:    If tzp is not a null pointer, the behaviour is unspecified. */
1.1       anton    1639: ltime=localtime((time_t *)&time1.tv_sec);
1.127     anton    1640: #endif
1.1       anton    1641: nyear =ltime->tm_year+1900;
                   1642: nmonth=ltime->tm_mon+1;
                   1643: nday  =ltime->tm_mday;
                   1644: nhour =ltime->tm_hour;
                   1645: nmin  =ltime->tm_min;
                   1646: nsec  =ltime->tm_sec;
                   1647: 
1.47      anton    1648: ms     ( n -- )        facility-ext
1.44      crook    1649: ""Wait at least @i{n} milli-second.""
1.1       anton    1650: struct timeval timeout;
                   1651: timeout.tv_sec=n/1000;
                   1652: timeout.tv_usec=1000*(n%1000);
                   1653: (void)select(0,0,0,0,&timeout);
                   1654: 
1.47      anton    1655: allocate       ( u -- a_addr wior )    memory
1.29      crook    1656: ""Allocate @i{u} address units of contiguous data space. The initial
1.27      crook    1657: contents of the data space is undefined. If the allocation is successful,
1.29      crook    1658: @i{a-addr} is the start address of the allocated region and @i{wior}
                   1659: is 0. If the allocation fails, @i{a-addr} is undefined and @i{wior}
1.52      anton    1660: is a non-zero I/O result code.""
1.1       anton    1661: a_addr = (Cell *)malloc(u?u:1);
                   1662: wior = IOR(a_addr==NULL);
                   1663: 
1.47      anton    1664: free   ( a_addr -- wior )              memory
1.29      crook    1665: ""Return the region of data space starting at @i{a-addr} to the system.
1.52      anton    1666: The region must originally have been obtained using @code{allocate} or
1.29      crook    1667: @code{resize}. If the operational is successful, @i{wior} is 0.
1.52      anton    1668: If the operation fails, @i{wior} is a non-zero I/O result code.""
1.1       anton    1669: free(a_addr);
                   1670: wior = 0;
                   1671: 
1.47      anton    1672: resize ( a_addr1 u -- a_addr2 wior )   memory
1.26      crook    1673: ""Change the size of the allocated area at @i{a-addr1} to @i{u}
1.1       anton    1674: address units, possibly moving the contents to a different
1.27      crook    1675: area. @i{a-addr2} is the address of the resulting area.
1.52      anton    1676: If the operation is successful, @i{wior} is 0.
                   1677: If the operation fails, @i{wior} is a non-zero
1.29      crook    1678: I/O result code. If @i{a-addr1} is 0, Gforth's (but not the Standard)
1.27      crook    1679: @code{resize} @code{allocate}s @i{u} address units.""
1.1       anton    1680: /* the following check is not necessary on most OSs, but it is needed
                   1681:    on SunOS 4.1.2. */
1.46      pazsan   1682: /* close ' to keep fontify happy */
1.1       anton    1683: if (a_addr1==NULL)
                   1684:   a_addr2 = (Cell *)malloc(u);
                   1685: else
                   1686:   a_addr2 = (Cell *)realloc(a_addr1, u);
                   1687: wior = IOR(a_addr2==NULL);     /* !! Define a return code */
                   1688: 
1.47      anton    1689: strerror       ( n -- c_addr u )       gforth
1.1       anton    1690: c_addr = strerror(n);
                   1691: u = strlen(c_addr);
                   1692: 
1.47      anton    1693: strsignal      ( n -- c_addr u )       gforth
1.133     anton    1694: c_addr = (Address)strsignal(n);
1.1       anton    1695: u = strlen(c_addr);
                   1696: 
1.47      anton    1697: call-c ( w -- )        gforth  call_c
1.1       anton    1698: ""Call the C function pointed to by @i{w}. The C function has to
                   1699: access the stack itself. The stack pointers are exported in the global
                   1700: variables @code{SP} and @code{FP}.""
                   1701: /* This is a first attempt at support for calls to C. This may change in
                   1702:    the future */
1.64      anton    1703: IF_fpTOS(fp[0]=fpTOS);
1.1       anton    1704: FP=fp;
                   1705: SP=sp;
                   1706: ((void (*)())w)();
                   1707: sp=SP;
                   1708: fp=FP;
1.64      anton    1709: IF_spTOS(spTOS=sp[0]);
                   1710: IF_fpTOS(fpTOS=fp[0]);
1.1       anton    1711: 
1.15      pazsan   1712: \+
                   1713: \+file
1.1       anton    1714: 
1.47      anton    1715: close-file     ( wfileid -- wior )             file    close_file
1.1       anton    1716: wior = IOR(fclose((FILE *)wfileid)==EOF);
                   1717: 
1.56      anton    1718: open-file      ( c_addr u wfam -- wfileid wior )       file    open_file
                   1719: wfileid = (Cell)fopen(tilde_cstr(c_addr, u, 1), fileattr[wfam]);
1.22      crook    1720: wior =  IOR(wfileid == 0);
1.1       anton    1721: 
1.56      anton    1722: create-file    ( c_addr u wfam -- wfileid wior )       file    create_file
1.1       anton    1723: Cell   fd;
1.56      anton    1724: fd = open(tilde_cstr(c_addr, u, 1), O_CREAT|O_TRUNC|ufileattr[wfam], 0666);
1.1       anton    1725: if (fd != -1) {
1.56      anton    1726:   wfileid = (Cell)fdopen(fd, fileattr[wfam]);
1.22      crook    1727:   wior = IOR(wfileid == 0);
1.1       anton    1728: } else {
1.22      crook    1729:   wfileid = 0;
1.1       anton    1730:   wior = IOR(1);
                   1731: }
                   1732: 
1.47      anton    1733: delete-file    ( c_addr u -- wior )            file    delete_file
1.1       anton    1734: wior = IOR(unlink(tilde_cstr(c_addr, u, 1))==-1);
                   1735: 
1.47      anton    1736: rename-file    ( c_addr1 u1 c_addr2 u2 -- wior )       file-ext        rename_file
1.29      crook    1737: ""Rename file @i{c_addr1 u1} to new name @i{c_addr2 u2}""
1.125     anton    1738: wior = rename_file(c_addr1, u1, c_addr2, u2);
1.1       anton    1739: 
1.47      anton    1740: file-position  ( wfileid -- ud wior )  file    file_position
1.1       anton    1741: /* !! use tell and lseek? */
1.108     anton    1742: ud = OFF2UD(ftello((FILE *)wfileid));
                   1743: wior = IOR(UD2OFF(ud)==-1);
1.1       anton    1744: 
1.47      anton    1745: reposition-file        ( ud wfileid -- wior )  file    reposition_file
1.108     anton    1746: wior = IOR(fseeko((FILE *)wfileid, UD2OFF(ud), SEEK_SET)==-1);
1.1       anton    1747: 
1.47      anton    1748: file-size      ( wfileid -- ud wior )  file    file_size
1.1       anton    1749: struct stat buf;
                   1750: wior = IOR(fstat(fileno((FILE *)wfileid), &buf)==-1);
1.108     anton    1751: ud = OFF2UD(buf.st_size);
1.1       anton    1752: 
1.47      anton    1753: resize-file    ( ud wfileid -- wior )  file    resize_file
1.108     anton    1754: wior = IOR(ftruncate(fileno((FILE *)wfileid), UD2OFF(ud))==-1);
1.1       anton    1755: 
1.47      anton    1756: read-file      ( c_addr u1 wfileid -- u2 wior )        file    read_file
1.1       anton    1757: /* !! fread does not guarantee enough */
                   1758: u2 = fread(c_addr, sizeof(Char), u1, (FILE *)wfileid);
                   1759: wior = FILEIO(u2<u1 && ferror((FILE *)wfileid));
                   1760: /* !! is the value of ferror errno-compatible? */
                   1761: if (wior)
                   1762:   clearerr((FILE *)wfileid);
                   1763: 
1.125     anton    1764: (read-line)    ( c_addr u1 wfileid -- u2 flag u3 wior ) file   paren_read_line
                   1765: struct Cellquad r = read_line(c_addr, u1, wfileid);
                   1766: u2   = r.n1;
                   1767: flag = r.n2;
                   1768: u3   = r.n3;
                   1769: wior = r.n4;
1.1       anton    1770: 
1.15      pazsan   1771: \+
1.1       anton    1772: 
1.47      anton    1773: write-file     ( c_addr u1 wfileid -- wior )   file    write_file
1.1       anton    1774: /* !! fwrite does not guarantee enough */
1.39      pazsan   1775: #ifdef HAS_FILE
1.1       anton    1776: {
                   1777:   UCell u2 = fwrite(c_addr, sizeof(Char), u1, (FILE *)wfileid);
                   1778:   wior = FILEIO(u2<u1 && ferror((FILE *)wfileid));
                   1779:   if (wior)
                   1780:     clearerr((FILE *)wfileid);
                   1781: }
1.39      pazsan   1782: #else
                   1783: TYPE(c_addr, u1);
                   1784: #endif
1.17      pazsan   1785: 
1.47      anton    1786: emit-file      ( c wfileid -- wior )   gforth  emit_file
1.17      pazsan   1787: #ifdef HAS_FILE
1.1       anton    1788: wior = FILEIO(putc(c, (FILE *)wfileid)==EOF);
                   1789: if (wior)
                   1790:   clearerr((FILE *)wfileid);
1.17      pazsan   1791: #else
1.36      pazsan   1792: PUTC(c);
1.17      pazsan   1793: #endif
1.1       anton    1794: 
1.15      pazsan   1795: \+file
1.1       anton    1796: 
1.47      anton    1797: flush-file     ( wfileid -- wior )             file-ext        flush_file
1.1       anton    1798: wior = IOR(fflush((FILE *) wfileid)==EOF);
                   1799: 
1.56      anton    1800: file-status    ( c_addr u -- wfam wior )       file-ext        file_status
1.125     anton    1801: struct Cellpair r = file_status(c_addr, u);
                   1802: wfam = r.n1;
                   1803: wior = r.n2;
1.1       anton    1804: 
1.112     pazsan   1805: file-eof?      ( wfileid -- flag )     gforth  file_eof_query
                   1806: flag = FLAG(feof((FILE *) wfileid));
1.1       anton    1807: 
1.112     pazsan   1808: open-dir       ( c_addr u -- wdirid wior )     gforth  open_dir
                   1809: ""Open the directory specified by @i{c-addr, u}
                   1810: and return @i{dir-id} for futher access to it.""
                   1811: wdirid = (Cell)opendir(tilde_cstr(c_addr, u, 1));
                   1812: wior =  IOR(wdirid == 0);
                   1813: 
                   1814: read-dir       ( c_addr u1 wdirid -- u2 flag wior )    gforth  read_dir
                   1815: ""Attempt to read the next entry from the directory specified
                   1816: by @i{dir-id} to the buffer of length @i{u1} at address @i{c-addr}. 
                   1817: If the attempt fails because there is no more entries,
                   1818: @i{ior}=0, @i{flag}=0, @i{u2}=0, and the buffer is unmodified.
                   1819: If the attempt to read the next entry fails because of any other reason, 
                   1820: return @i{ior}<>0.
                   1821: If the attempt succeeds, store file name to the buffer at @i{c-addr}
                   1822: and return @i{ior}=0, @i{flag}=true and @i{u2} equal to the size of the file name.
                   1823: If the length of the file name is greater than @i{u1}, 
                   1824: store first @i{u1} characters from file name into the buffer and
                   1825: indicate "name too long" with @i{ior}, @i{flag}=true, and @i{u2}=@i{u1}.""
                   1826: struct dirent * dent;
                   1827: dent = readdir((DIR *)wdirid);
                   1828: wior = 0;
                   1829: flag = -1;
                   1830: if(dent == NULL) {
                   1831:   u2 = 0;
                   1832:   flag = 0;
                   1833: } else {
                   1834:   u2 = strlen(dent->d_name);
                   1835:   if(u2 > u1) {
                   1836:     u2 = u1;
                   1837:     wior = -512-ENAMETOOLONG;
                   1838:   }
                   1839:   memmove(c_addr, dent->d_name, u2);
                   1840: }
                   1841: 
                   1842: close-dir      ( wdirid -- wior )      gforth  close_dir
                   1843: ""Close the directory specified by @i{dir-id}.""
                   1844: wior = IOR(closedir((DIR *)wdirid));
                   1845: 
                   1846: filename-match ( c_addr1 u1 c_addr2 u2 -- flag )       gforth  match_file
                   1847: char * string = cstr(c_addr1, u1, 1);
                   1848: char * pattern = cstr(c_addr2, u2, 0);
                   1849: flag = FLAG(!fnmatch(pattern, string, 0));
                   1850: 
1.157   ! pazsan   1851: set-dir        ( c_addr u -- wior )    gforth set_dir
        !          1852: ""Change the current directory to @i{c-addr, u}.
        !          1853: Return an error if this is not possible""
        !          1854: wior = IOR(chdir(tilde_cstr(c_addr, u, 1)));
        !          1855: 
        !          1856: get-dir        ( c_addr1 u1 -- c_addr2 u2 )    gforth get_dir
        !          1857: ""Store the current directory in the buffer specified by @{c-addr1, u1}.
        !          1858: If the buffer size is not sufficient, return 0 0""
        !          1859: c_addr2 = getcwd(c_addr1, u1);
        !          1860: if(c_addr2 != NULL) {
        !          1861:   u2 = strlen(c_addr2);
        !          1862: } else {
        !          1863:   u2 = 0;
        !          1864: }
        !          1865: 
1.112     pazsan   1866: \+
                   1867: 
                   1868: newline        ( -- c_addr u ) gforth
                   1869: ""String containing the newline sequence of the host OS""
                   1870: char newline[] = {
1.115     anton    1871: #if DIRSEP=='/'
                   1872: /* Unix */
1.112     pazsan   1873: '\n'
                   1874: #else
1.115     anton    1875: /* DOS, Win, OS/2 */
1.112     pazsan   1876: '\r','\n'
                   1877: #endif
                   1878: };
                   1879: c_addr=newline;
                   1880: u=sizeof(newline);
                   1881: :
                   1882:  "newline count ;
                   1883: Create "newline e? crlf [IF] 2 c, $0D c, [ELSE] 1 c, [THEN] $0A c,
                   1884: 
                   1885: \+os
                   1886: 
                   1887: utime  ( -- dtime )    gforth
                   1888: ""Report the current time in microseconds since some epoch.""
                   1889: struct timeval time1;
                   1890: gettimeofday(&time1,NULL);
                   1891: dtime = timeval2us(&time1);
                   1892: 
                   1893: cputime ( -- duser dsystem ) gforth
                   1894: ""duser and dsystem are the respective user- and system-level CPU
                   1895: times used since the start of the Forth system (excluding child
                   1896: processes), in microseconds (the granularity may be much larger,
                   1897: however).  On platforms without the getrusage call, it reports elapsed
                   1898: time (since some epoch) for duser and 0 for dsystem.""
                   1899: #ifdef HAVE_GETRUSAGE
                   1900: struct rusage usage;
                   1901: getrusage(RUSAGE_SELF, &usage);
                   1902: duser = timeval2us(&usage.ru_utime);
                   1903: dsystem = timeval2us(&usage.ru_stime);
                   1904: #else
                   1905: struct timeval time1;
                   1906: gettimeofday(&time1,NULL);
                   1907: duser = timeval2us(&time1);
                   1908: #ifndef BUGGY_LONG_LONG
                   1909: dsystem = (DCell)0;
                   1910: #else
                   1911: dsystem=(DCell){0,0};
                   1912: #endif
                   1913: #endif
                   1914: 
                   1915: \+
                   1916: 
                   1917: \+floating
                   1918: 
                   1919: \g floating
1.83      pazsan   1920: 
1.1       anton    1921: comparisons(f, r1 r2, f_, r1, r2, gforth, gforth, float, gforth)
                   1922: comparisons(f0, r, f_zero_, r, 0., float, gforth, float, gforth)
                   1923: 
1.47      anton    1924: d>f    ( d -- r )              float   d_to_f
1.1       anton    1925: #ifdef BUGGY_LONG_LONG
                   1926: extern double ldexp(double x, int exp);
1.113     anton    1927: if (d.hi<0) {
                   1928:   DCell d2=dnegate(d);
                   1929:   r = -(ldexp((Float)d2.hi,CELL_BITS) + (Float)d2.lo);
                   1930: } else
                   1931:   r = ldexp((Float)d.hi,CELL_BITS) + (Float)d.lo;
1.1       anton    1932: #else
                   1933: r = d;
                   1934: #endif
                   1935: 
1.47      anton    1936: f>d    ( r -- d )              float   f_to_d
1.100     pazsan   1937: extern DCell double2ll(Float r);
                   1938: d = double2ll(r);
1.1       anton    1939: 
1.47      anton    1940: f!     ( r f_addr -- ) float   f_store
1.52      anton    1941: ""Store @i{r} into the float at address @i{f-addr}.""
1.1       anton    1942: *f_addr = r;
                   1943: 
1.47      anton    1944: f@     ( f_addr -- r ) float   f_fetch
1.52      anton    1945: ""@i{r} is the float at address @i{f-addr}.""
1.1       anton    1946: r = *f_addr;
                   1947: 
1.47      anton    1948: df@    ( df_addr -- r )        float-ext       d_f_fetch
1.52      anton    1949: ""Fetch the double-precision IEEE floating-point value @i{r} from the address @i{df-addr}.""
1.1       anton    1950: #ifdef IEEE_FP
                   1951: r = *df_addr;
                   1952: #else
                   1953: !! df@
                   1954: #endif
                   1955: 
1.47      anton    1956: df!    ( r df_addr -- )        float-ext       d_f_store
1.52      anton    1957: ""Store @i{r} as double-precision IEEE floating-point value to the
                   1958: address @i{df-addr}.""
1.1       anton    1959: #ifdef IEEE_FP
                   1960: *df_addr = r;
                   1961: #else
                   1962: !! df!
                   1963: #endif
                   1964: 
1.47      anton    1965: sf@    ( sf_addr -- r )        float-ext       s_f_fetch
1.52      anton    1966: ""Fetch the single-precision IEEE floating-point value @i{r} from the address @i{sf-addr}.""
1.1       anton    1967: #ifdef IEEE_FP
                   1968: r = *sf_addr;
                   1969: #else
                   1970: !! sf@
                   1971: #endif
                   1972: 
1.47      anton    1973: sf!    ( r sf_addr -- )        float-ext       s_f_store
1.52      anton    1974: ""Store @i{r} as single-precision IEEE floating-point value to the
                   1975: address @i{sf-addr}.""
1.1       anton    1976: #ifdef IEEE_FP
                   1977: *sf_addr = r;
                   1978: #else
                   1979: !! sf!
                   1980: #endif
                   1981: 
1.47      anton    1982: f+     ( r1 r2 -- r3 ) float   f_plus
1.1       anton    1983: r3 = r1+r2;
                   1984: 
1.47      anton    1985: f-     ( r1 r2 -- r3 ) float   f_minus
1.1       anton    1986: r3 = r1-r2;
                   1987: 
1.47      anton    1988: f*     ( r1 r2 -- r3 ) float   f_star
1.1       anton    1989: r3 = r1*r2;
                   1990: 
1.47      anton    1991: f/     ( r1 r2 -- r3 ) float   f_slash
1.1       anton    1992: r3 = r1/r2;
                   1993: 
1.47      anton    1994: f**    ( r1 r2 -- r3 ) float-ext       f_star_star
1.26      crook    1995: ""@i{r3} is @i{r1} raised to the @i{r2}th power.""
1.1       anton    1996: r3 = pow(r1,r2);
                   1997: 
1.47      anton    1998: fnegate        ( r1 -- r2 )    float   f_negate
1.1       anton    1999: r2 = - r1;
                   2000: 
1.47      anton    2001: fdrop  ( r -- )                float   f_drop
1.1       anton    2002: 
1.47      anton    2003: fdup   ( r -- r r )    float   f_dupe
1.1       anton    2004: 
1.47      anton    2005: fswap  ( r1 r2 -- r2 r1 )      float   f_swap
1.1       anton    2006: 
1.47      anton    2007: fover  ( r1 r2 -- r1 r2 r1 )   float   f_over
1.1       anton    2008: 
1.47      anton    2009: frot   ( r1 r2 r3 -- r2 r3 r1 )        float   f_rote
1.1       anton    2010: 
1.47      anton    2011: fnip   ( r1 r2 -- r2 ) gforth  f_nip
1.1       anton    2012: 
1.47      anton    2013: ftuck  ( r1 r2 -- r2 r1 r2 )   gforth  f_tuck
1.1       anton    2014: 
1.47      anton    2015: float+ ( f_addr1 -- f_addr2 )  float   float_plus
1.52      anton    2016: ""@code{1 floats +}.""
1.1       anton    2017: f_addr2 = f_addr1+1;
                   2018: 
1.47      anton    2019: floats ( n1 -- n2 )    float
1.52      anton    2020: ""@i{n2} is the number of address units of @i{n1} floats.""
1.1       anton    2021: n2 = n1*sizeof(Float);
                   2022: 
1.47      anton    2023: floor  ( r1 -- r2 )    float
1.26      crook    2024: ""Round towards the next smaller integral value, i.e., round toward negative infinity.""
1.1       anton    2025: /* !! unclear wording */
                   2026: r2 = floor(r1);
                   2027: 
1.105     anton    2028: fround ( r1 -- r2 )    gforth  f_round
                   2029: ""Round to the nearest integral value.""
1.1       anton    2030: r2 = rint(r1);
                   2031: 
1.47      anton    2032: fmax   ( r1 r2 -- r3 ) float   f_max
1.1       anton    2033: if (r1<r2)
                   2034:   r3 = r2;
                   2035: else
                   2036:   r3 = r1;
                   2037: 
1.47      anton    2038: fmin   ( r1 r2 -- r3 ) float   f_min
1.1       anton    2039: if (r1<r2)
                   2040:   r3 = r1;
                   2041: else
                   2042:   r3 = r2;
                   2043: 
1.47      anton    2044: represent      ( r c_addr u -- n f1 f2 )       float
1.1       anton    2045: char *sig;
1.122     anton    2046: size_t siglen;
1.1       anton    2047: int flag;
                   2048: int decpt;
                   2049: sig=ecvt(r, u, &decpt, &flag);
1.122     anton    2050: n=(r==0. ? 1 : decpt);
1.1       anton    2051: f1=FLAG(flag!=0);
1.21      anton    2052: f2=FLAG(isdigit((unsigned)(sig[0]))!=0);
1.122     anton    2053: siglen=strlen(sig);
1.124     anton    2054: if (siglen>u) /* happens in glibc-2.1.3 if 999.. is rounded up */
                   2055:   siglen=u;
1.122     anton    2056: memcpy(c_addr,sig,siglen);
1.123     anton    2057: memset(c_addr+siglen,f2?'0':' ',u-siglen);
1.1       anton    2058: 
1.47      anton    2059: >float ( c_addr u -- flag )    float   to_float
1.56      anton    2060: ""Actual stack effect: ( c_addr u -- r t | f ).  Attempt to convert the
                   2061: character string @i{c-addr u} to internal floating-point
                   2062: representation. If the string represents a valid floating-point number
                   2063: @i{r} is placed on the floating-point stack and @i{flag} is
                   2064: true. Otherwise, @i{flag} is false. A string of blanks is a special
                   2065: case and represents the floating-point number 0.""
1.1       anton    2066: Float r;
1.125     anton    2067: flag = to_float(c_addr, u, &r);
                   2068: if (flag) {
                   2069:   IF_fpTOS(fp[0] = fpTOS);
                   2070:   fp += -1;
                   2071:   fpTOS = r;
1.1       anton    2072: }
                   2073: 
1.47      anton    2074: fabs   ( r1 -- r2 )    float-ext       f_abs
1.1       anton    2075: r2 = fabs(r1);
                   2076: 
1.47      anton    2077: facos  ( r1 -- r2 )    float-ext       f_a_cos
1.1       anton    2078: r2 = acos(r1);
                   2079: 
1.47      anton    2080: fasin  ( r1 -- r2 )    float-ext       f_a_sine
1.1       anton    2081: r2 = asin(r1);
                   2082: 
1.47      anton    2083: fatan  ( r1 -- r2 )    float-ext       f_a_tan
1.1       anton    2084: r2 = atan(r1);
                   2085: 
1.47      anton    2086: fatan2 ( r1 r2 -- r3 ) float-ext       f_a_tan_two
1.26      crook    2087: ""@i{r1/r2}=tan(@i{r3}). ANS Forth does not require, but probably
1.1       anton    2088: intends this to be the inverse of @code{fsincos}. In gforth it is.""
                   2089: r3 = atan2(r1,r2);
                   2090: 
1.47      anton    2091: fcos   ( r1 -- r2 )    float-ext       f_cos
1.1       anton    2092: r2 = cos(r1);
                   2093: 
1.47      anton    2094: fexp   ( r1 -- r2 )    float-ext       f_e_x_p
1.1       anton    2095: r2 = exp(r1);
                   2096: 
1.47      anton    2097: fexpm1 ( r1 -- r2 )    float-ext       f_e_x_p_m_one
1.1       anton    2098: ""@i{r2}=@i{e}**@i{r1}@minus{}1""
                   2099: #ifdef HAVE_EXPM1
1.3       pazsan   2100: extern double
                   2101: #ifdef NeXT
                   2102:               const
                   2103: #endif
                   2104:                     expm1(double);
1.1       anton    2105: r2 = expm1(r1);
                   2106: #else
                   2107: r2 = exp(r1)-1.;
                   2108: #endif
                   2109: 
1.47      anton    2110: fln    ( r1 -- r2 )    float-ext       f_l_n
1.1       anton    2111: r2 = log(r1);
                   2112: 
1.47      anton    2113: flnp1  ( r1 -- r2 )    float-ext       f_l_n_p_one
1.1       anton    2114: ""@i{r2}=ln(@i{r1}+1)""
                   2115: #ifdef HAVE_LOG1P
1.3       pazsan   2116: extern double
                   2117: #ifdef NeXT
                   2118:               const
                   2119: #endif
                   2120:                     log1p(double);
1.1       anton    2121: r2 = log1p(r1);
                   2122: #else
                   2123: r2 = log(r1+1.);
                   2124: #endif
                   2125: 
1.47      anton    2126: flog   ( r1 -- r2 )    float-ext       f_log
1.26      crook    2127: ""The decimal logarithm.""
1.1       anton    2128: r2 = log10(r1);
                   2129: 
1.47      anton    2130: falog  ( r1 -- r2 )    float-ext       f_a_log
1.1       anton    2131: ""@i{r2}=10**@i{r1}""
                   2132: extern double pow10(double);
                   2133: r2 = pow10(r1);
                   2134: 
1.47      anton    2135: fsin   ( r1 -- r2 )    float-ext       f_sine
1.1       anton    2136: r2 = sin(r1);
                   2137: 
1.47      anton    2138: fsincos        ( r1 -- r2 r3 ) float-ext       f_sine_cos
1.1       anton    2139: ""@i{r2}=sin(@i{r1}), @i{r3}=cos(@i{r1})""
                   2140: r2 = sin(r1);
                   2141: r3 = cos(r1);
                   2142: 
1.47      anton    2143: fsqrt  ( r1 -- r2 )    float-ext       f_square_root
1.1       anton    2144: r2 = sqrt(r1);
                   2145: 
1.47      anton    2146: ftan   ( r1 -- r2 )    float-ext       f_tan
1.1       anton    2147: r2 = tan(r1);
                   2148: :
                   2149:  fsincos f/ ;
                   2150: 
1.47      anton    2151: fsinh  ( r1 -- r2 )    float-ext       f_cinch
1.1       anton    2152: r2 = sinh(r1);
                   2153: :
                   2154:  fexpm1 fdup fdup 1. d>f f+ f/ f+ f2/ ;
                   2155: 
1.47      anton    2156: fcosh  ( r1 -- r2 )    float-ext       f_cosh
1.1       anton    2157: r2 = cosh(r1);
                   2158: :
                   2159:  fexp fdup 1/f f+ f2/ ;
                   2160: 
1.47      anton    2161: ftanh  ( r1 -- r2 )    float-ext       f_tan_h
1.1       anton    2162: r2 = tanh(r1);
                   2163: :
                   2164:  f2* fexpm1 fdup 2. d>f f+ f/ ;
                   2165: 
1.47      anton    2166: fasinh ( r1 -- r2 )    float-ext       f_a_cinch
1.1       anton    2167: r2 = asinh(r1);
                   2168: :
                   2169:  fdup fdup f* 1. d>f f+ fsqrt f/ fatanh ;
                   2170: 
1.47      anton    2171: facosh ( r1 -- r2 )    float-ext       f_a_cosh
1.1       anton    2172: r2 = acosh(r1);
                   2173: :
                   2174:  fdup fdup f* 1. d>f f- fsqrt f+ fln ;
                   2175: 
1.47      anton    2176: fatanh ( r1 -- r2 )    float-ext       f_a_tan_h
1.1       anton    2177: r2 = atanh(r1);
                   2178: :
                   2179:  fdup f0< >r fabs 1. d>f fover f- f/  f2* flnp1 f2/
                   2180:  r> IF  fnegate  THEN ;
                   2181: 
1.47      anton    2182: sfloats        ( n1 -- n2 )    float-ext       s_floats
1.52      anton    2183: ""@i{n2} is the number of address units of @i{n1}
1.29      crook    2184: single-precision IEEE floating-point numbers.""
1.1       anton    2185: n2 = n1*sizeof(SFloat);
                   2186: 
1.47      anton    2187: dfloats        ( n1 -- n2 )    float-ext       d_floats
1.52      anton    2188: ""@i{n2} is the number of address units of @i{n1}
1.29      crook    2189: double-precision IEEE floating-point numbers.""
1.1       anton    2190: n2 = n1*sizeof(DFloat);
                   2191: 
1.47      anton    2192: sfaligned      ( c_addr -- sf_addr )   float-ext       s_f_aligned
1.52      anton    2193: ""@i{sf-addr} is the first single-float-aligned address greater
1.29      crook    2194: than or equal to @i{c-addr}.""
1.1       anton    2195: sf_addr = (SFloat *)((((Cell)c_addr)+(sizeof(SFloat)-1))&(-sizeof(SFloat)));
                   2196: :
                   2197:  [ 1 sfloats 1- ] Literal + [ -1 sfloats ] Literal and ;
                   2198: 
1.47      anton    2199: dfaligned      ( c_addr -- df_addr )   float-ext       d_f_aligned
1.52      anton    2200: ""@i{df-addr} is the first double-float-aligned address greater
1.29      crook    2201: than or equal to @i{c-addr}.""
1.1       anton    2202: df_addr = (DFloat *)((((Cell)c_addr)+(sizeof(DFloat)-1))&(-sizeof(DFloat)));
                   2203: :
                   2204:  [ 1 dfloats 1- ] Literal + [ -1 dfloats ] Literal and ;
                   2205: 
1.112     pazsan   2206: v*     ( f_addr1 nstride1 f_addr2 nstride2 ucount -- r ) gforth v_star
                   2207: ""dot-product: r=v1*v2.  The first element of v1 is at f_addr1, the
                   2208: next at f_addr1+nstride1 and so on (similar for v2). Both vectors have
                   2209: ucount elements.""
1.125     anton    2210: r = v_star(f_addr1, nstride1, f_addr2, nstride2, ucount);
1.112     pazsan   2211: :
                   2212:  >r swap 2swap swap 0e r> 0 ?DO
                   2213:      dup f@ over + 2swap dup f@ f* f+ over + 2swap
                   2214:  LOOP 2drop 2drop ; 
                   2215: 
                   2216: faxpy  ( ra f_x nstridex f_y nstridey ucount -- )      gforth
                   2217: ""vy=ra*vx+vy""
1.125     anton    2218: faxpy(ra, f_x, nstridex, f_y, nstridey, ucount);
1.112     pazsan   2219: :
                   2220:  >r swap 2swap swap r> 0 ?DO
                   2221:      fdup dup f@ f* over + 2swap dup f@ f+ dup f! over + 2swap
                   2222:  LOOP 2drop 2drop fdrop ;
                   2223: 
                   2224: \+
                   2225: 
1.1       anton    2226: \ The following words access machine/OS/installation-dependent
                   2227: \   Gforth internals
                   2228: \ !! how about environmental queries DIRECT-THREADED,
                   2229: \   INDIRECT-THREADED, TOS-CACHED, FTOS-CACHED, CODEFIELD-DOES */
                   2230: 
                   2231: \ local variable implementation primitives
1.112     pazsan   2232: 
1.15      pazsan   2233: \+glocals
1.1       anton    2234: 
1.110     pazsan   2235: \g locals
                   2236: 
1.68      anton    2237: @local#        ( #noffset -- w )       gforth  fetch_local_number
                   2238: w = *(Cell *)(lp+noffset);
1.1       anton    2239: 
1.47      anton    2240: @local0        ( -- w )        new     fetch_local_zero
1.112     pazsan   2241: w = ((Cell *)lp)[0];
1.1       anton    2242: 
1.47      anton    2243: @local1        ( -- w )        new     fetch_local_four
1.112     pazsan   2244: w = ((Cell *)lp)[1];
1.1       anton    2245: 
1.47      anton    2246: @local2        ( -- w )        new     fetch_local_eight
1.112     pazsan   2247: w = ((Cell *)lp)[2];
1.1       anton    2248: 
1.47      anton    2249: @local3        ( -- w )        new     fetch_local_twelve
1.112     pazsan   2250: w = ((Cell *)lp)[3];
1.1       anton    2251: 
1.15      pazsan   2252: \+floating
1.1       anton    2253: 
1.68      anton    2254: f@local#       ( #noffset -- r )       gforth  f_fetch_local_number
                   2255: r = *(Float *)(lp+noffset);
1.1       anton    2256: 
1.47      anton    2257: f@local0       ( -- r )        new     f_fetch_local_zero
1.112     pazsan   2258: r = ((Float *)lp)[0];
1.1       anton    2259: 
1.47      anton    2260: f@local1       ( -- r )        new     f_fetch_local_eight
1.112     pazsan   2261: r = ((Float *)lp)[1];
1.1       anton    2262: 
1.15      pazsan   2263: \+
1.1       anton    2264: 
1.68      anton    2265: laddr# ( #noffset -- c_addr )  gforth  laddr_number
1.1       anton    2266: /* this can also be used to implement lp@ */
1.68      anton    2267: c_addr = (Char *)(lp+noffset);
1.1       anton    2268: 
1.68      anton    2269: lp+!#  ( #noffset -- ) gforth  lp_plus_store_number
1.1       anton    2270: ""used with negative immediate values it allocates memory on the
                   2271: local stack, a positive immediate argument drops memory from the local
                   2272: stack""
1.68      anton    2273: lp += noffset;
1.1       anton    2274: 
1.47      anton    2275: lp-    ( -- )  new     minus_four_lp_plus_store
1.1       anton    2276: lp += -sizeof(Cell);
                   2277: 
1.47      anton    2278: lp+    ( -- )  new     eight_lp_plus_store
1.1       anton    2279: lp += sizeof(Float);
                   2280: 
1.47      anton    2281: lp+2   ( -- )  new     sixteen_lp_plus_store
1.1       anton    2282: lp += 2*sizeof(Float);
                   2283: 
1.47      anton    2284: lp!    ( c_addr -- )   gforth  lp_store
1.1       anton    2285: lp = (Address)c_addr;
                   2286: 
1.47      anton    2287: >l     ( w -- )        gforth  to_l
1.1       anton    2288: lp -= sizeof(Cell);
                   2289: *(Cell *)lp = w;
                   2290: 
1.15      pazsan   2291: \+floating
1.1       anton    2292: 
1.47      anton    2293: f>l    ( r -- )        gforth  f_to_l
1.1       anton    2294: lp -= sizeof(Float);
                   2295: *(Float *)lp = r;
                   2296: 
1.47      anton    2297: fpick  ( u -- r )              gforth
1.52      anton    2298: ""Actually the stack effect is @code{ r0 ... ru u -- r0 ... ru r0 }.""
1.11      anton    2299: r = fp[u+1]; /* +1, because update of fp happens before this fragment */
                   2300: :
                   2301:  floats fp@ + f@ ;
                   2302: 
1.15      pazsan   2303: \+
                   2304: \+
1.1       anton    2305: 
1.15      pazsan   2306: \+OS
1.1       anton    2307: 
1.110     pazsan   2308: \g syslib
                   2309: 
1.131     pazsan   2310: open-lib       ( c_addr1 u1 -- u2 )    gforth  open_lib
                   2311: #if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN)
                   2312: #ifndef RTLD_GLOBAL
                   2313: #define RTLD_GLOBAL 0
                   2314: #endif
                   2315: u2=(UCell) dlopen(cstr(c_addr1, u1, 1), RTLD_GLOBAL | RTLD_LAZY);
                   2316: #else
                   2317: #  ifdef _WIN32
                   2318: u2 = (Cell) GetModuleHandle(cstr(c_addr1, u1, 1));
                   2319: #  else
                   2320: #warning Define open-lib!
                   2321: u2 = 0;
                   2322: #  endif
                   2323: #endif
                   2324: 
                   2325: lib-sym        ( c_addr1 u1 u2 -- u3 ) gforth  lib_sym
                   2326: #if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN)
                   2327: u3 = (UCell) dlsym((void*)u2,cstr(c_addr1, u1, 1));
                   2328: #else
                   2329: #  ifdef _WIN32
                   2330: u3 = (Cell) GetProcAddress((HMODULE)u2, cstr(c_addr1, u1, 1));
                   2331: #  else
                   2332: #warning Define lib-sym!
                   2333: u3 = 0;
                   2334: #  endif
                   2335: #endif
                   2336: 
1.142     pazsan   2337: wcall  ( u -- )        gforth
                   2338: IF_fpTOS(fp[0]=fpTOS);
                   2339: FP=fp;
                   2340: sp=(Cell*)(SYSCALL(Cell*(*)(Cell *, void *))u)(sp, &FP);
                   2341: fp=FP;
                   2342: IF_spTOS(spTOS=sp[0];)
                   2343: IF_fpTOS(fpTOS=fp[0]);
                   2344: 
1.131     pazsan   2345: \+FFCALL
                   2346: 
1.136     pazsan   2347: av-start-void  ( c_addr -- )   gforth  av_start_void
1.131     pazsan   2348: av_start_void(alist, c_addr);
                   2349: 
1.136     pazsan   2350: av-start-int   ( c_addr -- )   gforth  av_start_int
1.131     pazsan   2351: av_start_int(alist, c_addr, &irv);
                   2352: 
1.136     pazsan   2353: av-start-float ( c_addr -- )   gforth  av_start_float
1.131     pazsan   2354: av_start_float(alist, c_addr, &frv);
                   2355: 
1.136     pazsan   2356: av-start-double        ( c_addr -- )   gforth  av_start_double
1.131     pazsan   2357: av_start_double(alist, c_addr, &drv);
                   2358: 
1.136     pazsan   2359: av-start-longlong      ( c_addr -- )   gforth  av_start_longlong
1.131     pazsan   2360: av_start_longlong(alist, c_addr, &llrv);
                   2361: 
1.136     pazsan   2362: av-start-ptr   ( c_addr -- )   gforth  av_start_ptr
1.131     pazsan   2363: av_start_ptr(alist, c_addr, void*, &prv);
                   2364: 
                   2365: av-int  ( w -- )  gforth  av_int
                   2366: av_int(alist, w);
                   2367: 
1.136     pazsan   2368: av-float       ( r -- )        gforth  av_float
1.131     pazsan   2369: av_float(alist, r);
                   2370: 
1.136     pazsan   2371: av-double      ( r -- )        gforth  av_double
1.131     pazsan   2372: av_double(alist, r);
                   2373: 
1.136     pazsan   2374: av-longlong    ( d -- )        gforth  av_longlong
1.151     pazsan   2375: #ifdef BUGGY_LONG_LONG
                   2376: av_longlong(alist, d.lo);
                   2377: #else
1.131     pazsan   2378: av_longlong(alist, d);
1.151     pazsan   2379: #endif
1.131     pazsan   2380: 
1.136     pazsan   2381: av-ptr ( c_addr -- )   gforth  av_ptr
1.131     pazsan   2382: av_ptr(alist, void*, c_addr);
                   2383: 
1.136     pazsan   2384: av-int-r  ( R:w -- )  gforth  av_int_r
                   2385: av_int(alist, w);
                   2386: 
                   2387: av-float-r     ( -- )  gforth  av_float_r
                   2388: float r = *(Float*)lp;
                   2389: lp += sizeof(Float);
                   2390: av_float(alist, r);
                   2391: 
                   2392: av-double-r    ( -- )  gforth  av_double_r
                   2393: double r = *(Float*)lp;
                   2394: lp += sizeof(Float);
                   2395: av_double(alist, r);
                   2396: 
                   2397: av-longlong-r  ( R:d -- )      gforth  av_longlong_r
1.151     pazsan   2398: #ifdef BUGGY_LONG_LONG
                   2399: av_longlong(alist, d.lo);
                   2400: #else
1.136     pazsan   2401: av_longlong(alist, d);
1.151     pazsan   2402: #endif
1.136     pazsan   2403: 
                   2404: av-ptr-r       ( R:c_addr -- ) gforth  av_ptr_r
                   2405: av_ptr(alist, void*, c_addr);
                   2406: 
                   2407: av-call-void   ( -- )  gforth  av_call_void
1.131     pazsan   2408: SAVE_REGS
                   2409: av_call(alist);
                   2410: REST_REGS
                   2411: 
1.136     pazsan   2412: av-call-int    ( -- w )        gforth  av_call_int
1.131     pazsan   2413: SAVE_REGS
                   2414: av_call(alist);
1.134     pazsan   2415: REST_REGS
1.131     pazsan   2416: w = irv;
                   2417: 
1.136     pazsan   2418: av-call-float  ( -- r )        gforth  av_call_float
1.131     pazsan   2419: SAVE_REGS
                   2420: av_call(alist);
                   2421: REST_REGS
                   2422: r = frv;
                   2423: 
1.136     pazsan   2424: av-call-double ( -- r )        gforth  av_call_double
1.131     pazsan   2425: SAVE_REGS
                   2426: av_call(alist);
                   2427: REST_REGS
                   2428: r = drv;
                   2429: 
1.136     pazsan   2430: av-call-longlong       ( -- d )        gforth  av_call_longlong
1.131     pazsan   2431: SAVE_REGS
                   2432: av_call(alist);
                   2433: REST_REGS
1.151     pazsan   2434: #ifdef BUGGY_LONG_LONG
                   2435: d.lo = llrv;
                   2436: d.hi = 0;
1.152     pazsan   2437: #else
                   2438: d = llrv;
1.151     pazsan   2439: #endif
1.131     pazsan   2440: 
1.136     pazsan   2441: av-call-ptr    ( -- c_addr )   gforth  av_call_ptr
1.131     pazsan   2442: SAVE_REGS
                   2443: av_call(alist);
                   2444: REST_REGS
                   2445: c_addr = prv;
                   2446: 
1.135     pazsan   2447: alloc-callback ( a_ip -- c_addr )      gforth  alloc_callback
                   2448: c_addr = (char *)alloc_callback(engine_callback, (Xt *)a_ip);
1.131     pazsan   2449: 
1.135     pazsan   2450: va-start-void  ( -- )  gforth  va_start_void
                   2451: va_start_void(clist);
1.131     pazsan   2452: 
1.135     pazsan   2453: va-start-int   ( -- )  gforth  va_start_int
                   2454: va_start_int(clist);
1.131     pazsan   2455: 
1.135     pazsan   2456: va-start-longlong      ( -- )  gforth  va_start_longlong
                   2457: va_start_longlong(clist);
1.131     pazsan   2458: 
1.135     pazsan   2459: va-start-ptr   ( -- )  gforth  va_start_ptr
                   2460: va_start_ptr(clist, (char *));
1.131     pazsan   2461: 
1.135     pazsan   2462: va-start-float ( -- )  gforth  va_start_float
                   2463: va_start_float(clist);
                   2464: 
                   2465: va-start-double        ( -- )  gforth  va_start_double
                   2466: va_start_double(clist);
                   2467: 
                   2468: va-arg-int     ( -- w )        gforth  va_arg_int
                   2469: w = va_arg_int(clist);
                   2470: 
                   2471: va-arg-longlong        ( -- d )        gforth  va_arg_longlong
1.151     pazsan   2472: #ifdef BUGGY_LONG_LONG
                   2473: d.lo = va_arg_longlong(clist);
                   2474: d.hi = 0;
                   2475: #else
1.135     pazsan   2476: d = va_arg_longlong(clist);
1.151     pazsan   2477: #endif
1.135     pazsan   2478: 
                   2479: va-arg-ptr     ( -- c_addr )   gforth  va_arg_ptr
                   2480: c_addr = (char *)va_arg_ptr(clist,char*);
                   2481: 
                   2482: va-arg-float   ( -- r )        gforth  va_arg_float
                   2483: r = va_arg_float(clist);
                   2484: 
                   2485: va-arg-double  ( -- r )        gforth  va_arg_double
                   2486: r = va_arg_double(clist);
1.131     pazsan   2487: 
                   2488: va-return-void ( -- )  gforth va_return_void
                   2489: va_return_void(clist);
                   2490: return 0;
                   2491: 
                   2492: va-return-int ( w -- ) gforth va_return_int
                   2493: va_return_int(clist, w);
                   2494: return 0;
                   2495: 
                   2496: va-return-ptr ( c_addr -- )    gforth va_return_ptr
                   2497: va_return_ptr(clist, void *, c_addr);
                   2498: return 0;
                   2499: 
                   2500: va-return-longlong ( d -- )    gforth va_return_longlong
1.151     pazsan   2501: #ifdef BUGGY_LONG_LONG
                   2502: va_return_longlong(clist, d.lo);
                   2503: #else
1.131     pazsan   2504: va_return_longlong(clist, d);
1.151     pazsan   2505: #endif
1.131     pazsan   2506: return 0;
                   2507: 
                   2508: va-return-float ( r -- )       gforth va_return_float
                   2509: va_return_float(clist, r);
                   2510: return 0;
                   2511: 
                   2512: va-return-double ( r -- )      gforth va_return_double
                   2513: va_return_double(clist, r);
                   2514: return 0;
                   2515: 
1.142     pazsan   2516: \+
                   2517: 
                   2518: \+OLDCALL
1.131     pazsan   2519: 
1.1       anton    2520: define(`uploop',
                   2521:        `pushdef(`$1', `$2')_uploop(`$1', `$2', `$3', `$4', `$5')`'popdef(`$1')')
                   2522: define(`_uploop',
                   2523:        `ifelse($1, `$3', `$5',
                   2524:               `$4`'define(`$1', incr($1))_uploop(`$1', `$2', `$3', `$4', `$5')')')
                   2525: \ argflist(argnum): Forth argument list
                   2526: define(argflist,
                   2527:        `ifelse($1, 0, `',
                   2528:                `uploop(`_i', 1, $1, `format(`u%d ', _i)', `format(`u%d ', _i)')')')
                   2529: \ argdlist(argnum): declare C's arguments
                   2530: define(argdlist,
                   2531:        `ifelse($1, 0, `',
                   2532:                `uploop(`_i', 1, $1, `Cell, ', `Cell')')')
                   2533: \ argclist(argnum): pass C's arguments
                   2534: define(argclist,
                   2535:        `ifelse($1, 0, `',
                   2536:                `uploop(`_i', 1, $1, `format(`u%d, ', _i)', `format(`u%d', _i)')')')
                   2537: \ icall(argnum)
                   2538: define(icall,
1.47      anton    2539: `icall$1       ( argflist($1)u -- uret )       gforth
1.9       pazsan   2540: uret = (SYSCALL(Cell(*)(argdlist($1)))u)(argclist($1));
1.1       anton    2541: 
                   2542: ')
                   2543: define(fcall,
1.47      anton    2544: `fcall$1       ( argflist($1)u -- rret )       gforth
1.9       pazsan   2545: rret = (SYSCALL(Float(*)(argdlist($1)))u)(argclist($1));
1.1       anton    2546: 
                   2547: ')
                   2548: 
1.46      pazsan   2549: \ close ' to keep fontify happy
1.1       anton    2550: 
                   2551: uploop(i, 0, 7, `icall(i)')
                   2552: icall(20)
                   2553: uploop(i, 0, 7, `fcall(i)')
                   2554: fcall(20)
                   2555: 
1.15      pazsan   2556: \+
1.131     pazsan   2557: \+
1.1       anton    2558: 
1.142     pazsan   2559: \g peephole
1.46      pazsan   2560: 
1.112     pazsan   2561: \+peephole
                   2562: 
1.119     anton    2563: compile-prim1 ( a_prim -- ) gforth compile_prim1
                   2564: ""compile prim (incl. immargs) at @var{a_prim}""
                   2565: compile_prim1(a_prim);
                   2566: 
                   2567: finish-code ( -- ) gforth finish_code
                   2568: ""Perform delayed steps in code generation (branch resolution, I-cache
                   2569: flushing).""
1.149     anton    2570: IF_spTOS(sp[0]=spTOS); /* workaround for failing to save spTOS
                   2571:                          (gcc-2.95.1, gforth-fast --enable-force-reg) */
1.119     anton    2572: finish_code();
1.149     anton    2573: IF_spTOS(spTOS=sp[0]);
1.119     anton    2574: 
                   2575: forget-dyncode ( c_code -- f ) gforth-internal forget_dyncode
                   2576: f = forget_dyncode(c_code);
                   2577: 
                   2578: decompile-prim ( a_code -- a_prim ) gforth-internal decompile_prim
                   2579: ""a_prim is the code address of the primitive that has been
                   2580: compile_prim1ed to a_code""
1.121     anton    2581: a_prim = (Cell *)decompile_code((Label)a_code);
1.119     anton    2582: 
1.112     pazsan   2583: \ set-next-code and call2 do not appear in images and can be
                   2584: \ renumbered arbitrarily
1.46      pazsan   2585: 
1.112     pazsan   2586: set-next-code ( #w -- ) gforth set_next_code
                   2587: #ifdef NO_IP
                   2588: next_code = (Label)w;
                   2589: #endif
1.34      jwilke   2590: 
1.112     pazsan   2591: call2 ( #a_callee #a_ret_addr -- R:a_ret_addr ) gforth
                   2592: /* call with explicit return address */
                   2593: #ifdef NO_IP
                   2594: INST_TAIL;
                   2595: JUMP(a_callee);
1.45      anton    2596: #else
1.112     pazsan   2597: assert(0);
1.45      anton    2598: #endif
1.131     pazsan   2599: 
                   2600: tag-offsets ( -- a_addr ) gforth tag_offsets
                   2601: extern Cell groups[32];
                   2602: a_addr = groups;
1.51      anton    2603: 
1.54      pazsan   2604: \+
1.128     anton    2605: 
                   2606: \g static_super
                   2607: 
1.147     anton    2608: ifdef(`M4_ENGINE_FAST',
                   2609: `include(peeprules.vmg)')
1.54      pazsan   2610: 
1.112     pazsan   2611: \g end

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