Annotation of gforth/prim, revision 1.152

1.1       anton       1: \ Gforth primitives
                      2: 
1.126     anton       3: \ Copyright (C) 1995,1996,1997,1998,2000,2003 Free Software Foundation, Inc.
1.1       anton       4: 
                      5: \ This file is part of Gforth.
                      6: 
                      7: \ Gforth is free software; you can redistribute it and/or
                      8: \ modify it under the terms of the GNU General Public License
                      9: \ as published by the Free Software Foundation; either version 2
                     10: \ of the License, or (at your option) any later version.
                     11: 
                     12: \ This program is distributed in the hope that it will be useful,
                     13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
                     14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     15: \ GNU General Public License for more details.
                     16: 
                     17: \ You should have received a copy of the GNU General Public License
                     18: \ along with this program; if not, write to the Free Software
1.63      anton      19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.1       anton      20: 
                     21: 
                     22: \ WARNING: This file is processed by m4. Make sure your identifiers
                     23: \ don't collide with m4's (e.g. by undefining them).
                     24: \ 
                     25: \ 
                     26: \ 
                     27: \ This file contains primitive specifications in the following format:
                     28: \ 
1.47      anton      29: \ forth name   ( stack effect )        category        [pronunciation]
1.1       anton      30: \ [""glossary entry""]
                     31: \ C code
                     32: \ [:
                     33: \ Forth code]
                     34: \ 
1.47      anton      35: \ Note: Fields in brackets are optional.  Word specifications have to
                     36: \ be separated by at least one empty line
1.1       anton      37: \
                     38: \ Both pronounciation and stack items (in the stack effect) must
1.48      anton      39: \ conform to the C identifier syntax or the C compiler will complain.
                     40: \ If you don't have a pronounciation field, the Forth name is used,
                     41: \ and has to conform to the C identifier syntax.
1.1       anton      42: \ 
                     43: \ These specifications are automatically translated into C-code for the
                     44: \ interpreter and into some other files. I hope that your C compiler has
                     45: \ decent optimization, otherwise the automatically generated code will
                     46: \ be somewhat slow. The Forth version of the code is included for manual
                     47: \ compilers, so they will need to compile only the important words.
                     48: \ 
                     49: \ Note that stack pointer adjustment is performed according to stack
                     50: \ effect by automatically generated code and NEXT is automatically
                     51: \ appended to the C code. Also, you can use the names in the stack
                     52: \ effect in the C code. Stack access is automatic. One exception: if
                     53: \ your code does not fall through, the results are not stored into the
                     54: \ stack. Use different names on both sides of the '--', if you change a
                     55: \ value (some stores to the stack are optimized away).
1.93      anton      56: \
                     57: \ For superinstructions the syntax is:
                     58: \
                     59: \ forth-name [/ c-name] = forth-name forth-name ...
                     60: \
1.1       anton      61: \ 
                     62: \ The stack variables have the following types:
                     63: \ 
                     64: \ name matches type
                     65: \ f.*          Bool
                     66: \ c.*          Char
1.93      anton      67: \ [nw].*       Cell
1.1       anton      68: \ u.*          UCell
                     69: \ d.*          DCell
                     70: \ ud.*         UDCell
                     71: \ r.*          Float
                     72: \ a_.*         Cell *
                     73: \ c_.*         Char *
                     74: \ f_.*         Float *
                     75: \ df_.*                DFloat *
                     76: \ sf_.*                SFloat *
                     77: \ xt.*         XT
                     78: \ f83name.*    F83Name *
1.67      anton      79: 
1.79      anton      80: \E stack data-stack   sp Cell
                     81: \E stack fp-stack     fp Float
                     82: \E stack return-stack rp Cell
                     83: \E
1.67      anton      84: \E get-current prefixes set-current
                     85: \E 
                     86: \E s" Bool"            single data-stack type-prefix f
                     87: \E s" Char"            single data-stack type-prefix c
                     88: \E s" Cell"            single data-stack type-prefix n
                     89: \E s" Cell"            single data-stack type-prefix w
                     90: \E s" UCell"           single data-stack type-prefix u
                     91: \E s" DCell"           double data-stack type-prefix d
                     92: \E s" UDCell"          double data-stack type-prefix ud
                     93: \E s" Float"           single fp-stack   type-prefix r
                     94: \E s" Cell *"          single data-stack type-prefix a_
                     95: \E s" Char *"          single data-stack type-prefix c_
                     96: \E s" Float *"         single data-stack type-prefix f_
                     97: \E s" DFloat *"                single data-stack type-prefix df_
                     98: \E s" SFloat *"                single data-stack type-prefix sf_
                     99: \E s" Xt"              single data-stack type-prefix xt
                    100: \E s" struct F83Name *"        single data-stack type-prefix f83name
1.71      anton     101: \E s" struct Longname *" single data-stack type-prefix longname
1.67      anton     102: \E 
                    103: \E return-stack stack-prefix R:
                    104: \E inst-stream  stack-prefix #
                    105: \E 
                    106: \E set-current
1.97      anton     107: \E store-optimization on
1.109     anton     108: \E ' noop tail-nextp2 ! \ now INST_TAIL just stores, but does not jump
1.128     anton     109: \E
                    110: \E include-skipped-insts on \ static superinsts include cells for components
                    111: \E                          \ useful for dynamic programming and
                    112: \E                          \ superinsts across entry points
1.67      anton     113: 
1.1       anton     114: \ 
                    115: \ 
                    116: \ 
                    117: \ In addition the following names can be used:
                    118: \ ip   the instruction pointer
                    119: \ sp   the data stack pointer
                    120: \ rp   the parameter stack pointer
                    121: \ lp   the locals stack pointer
                    122: \ NEXT executes NEXT
                    123: \ cfa  
                    124: \ NEXT1        executes NEXT1
                    125: \ FLAG(x)      makes a Forth flag from a C flag
                    126: \ 
                    127: \ 
                    128: \ 
                    129: \ Percentages in comments are from Koopmans book: average/maximum use
                    130: \ (taken from four, not very representative benchmarks)
                    131: \ 
                    132: \ 
                    133: \ 
                    134: \ To do:
                    135: \ 
                    136: \ throw execute, cfa and NEXT1 out?
                    137: \ macroize *ip, ip++, *ip++ (pipelining)?
                    138: 
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);
                    327: #endif
1.1       anton     328: :
1.112     pazsan    329:  r> @ >r ;
1.1       anton     330: 
1.112     pazsan    331: \ condbranch(forthname,stackeffect,restline,code1,code2,forthcode)
1.1       anton     332: \ this is non-syntactical: code must open a brace that is closed by the macro
                    333: define(condbranch,
1.112     pazsan    334: $1 ( `#'a_target $2 ) $3
                    335: $4     #ifdef NO_IP
1.96      anton     336: INST_TAIL;
1.112     pazsan    337: #endif
                    338: $5     #ifdef NO_IP
                    339: JUMP(a_target);
                    340: #else
                    341: SET_IP((Xt *)a_target);
                    342: INST_TAIL; NEXT_P2;
                    343: #endif
1.1       anton     344: }
1.87      anton     345: SUPER_CONTINUE;
1.112     pazsan    346: $6
1.1       anton     347: 
1.15      pazsan    348: \+glocals
1.1       anton     349: 
1.112     pazsan    350: $1-lp+!`#' ( `#'a_target `#'nlocals $2 ) $3_lp_plus_store_number
                    351: $4     #ifdef NO_IP
1.96      anton     352: INST_TAIL;
1.112     pazsan    353: #endif
                    354: $5     lp += nlocals;
                    355: #ifdef NO_IP
                    356: JUMP(a_target);
                    357: #else
                    358: SET_IP((Xt *)a_target);
                    359: INST_TAIL; NEXT_P2;
                    360: #endif
1.1       anton     361: }
1.87      anton     362: SUPER_CONTINUE;
1.1       anton     363: 
1.15      pazsan    364: \+
1.1       anton     365: )
                    366: 
1.68      anton     367: condbranch(?branch,f --,f83    question_branch,
1.112     pazsan    368: ,if (f==0) {
1.5       jwilke    369: ,:
1.112     pazsan    370:  0= dup 0=          \ !f f
                    371:  r> tuck cell+      \ !f branchoffset f IP+
                    372:  and -rot @ and or  \ f&IP+|!f&branch
1.5       jwilke    373:  >r ;)
1.1       anton     374: 
                    375: \ we don't need an lp_plus_store version of the ?dup-stuff, because it
                    376: \ is only used in if's (yet)
                    377: 
1.15      pazsan    378: \+xconds
1.1       anton     379: 
1.112     pazsan    380: ?dup-?branch   ( #a_target f -- f )    new     question_dupe_question_branch
1.1       anton     381: ""The run-time procedure compiled by @code{?DUP-IF}.""
                    382: if (f==0) {
                    383:   sp++;
1.64      anton     384:   IF_spTOS(spTOS = sp[0]);
1.112     pazsan    385: #ifdef NO_IP
                    386: INST_TAIL;
                    387: JUMP(a_target);
                    388: #else
                    389: SET_IP((Xt *)a_target);
                    390:   INST_TAIL; NEXT_P2;
                    391: #endif
1.1       anton     392: }
1.87      anton     393: SUPER_CONTINUE;
1.1       anton     394: 
1.112     pazsan    395: ?dup-0=-?branch ( #a_target f -- ) new question_dupe_zero_equals_question_branch
1.1       anton     396: ""The run-time procedure compiled by @code{?DUP-0=-IF}.""
                    397: /* the approach taken here of declaring the word as having the stack
                    398: effect ( f -- ) and correcting for it in the branch-taken case costs a
                    399: few cycles in that case, but is easy to convert to a CONDBRANCH
                    400: invocation */
                    401: if (f!=0) {
                    402:   sp--;
1.112     pazsan    403: #ifdef NO_IP
                    404:   JUMP(a_target);
                    405: #else
                    406:   SET_IP((Xt *)a_target);
1.1       anton     407:   NEXT;
1.112     pazsan    408: #endif
1.1       anton     409: }
1.87      anton     410: SUPER_CONTINUE;
1.1       anton     411: 
1.15      pazsan    412: \+
1.31      jwilke    413: \fhas? skiploopprims 0= [IF]
1.1       anton     414: 
1.68      anton     415: condbranch((next),R:n1 -- R:n2,cmFORTH paren_next,
1.65      anton     416: n2=n1-1;
1.112     pazsan    417: ,if (n1) {
1.1       anton     418: ,:
                    419:  r> r> dup 1- >r
1.112     pazsan    420:  IF @ >r ELSE cell+ >r THEN ;)
1.1       anton     421: 
1.68      anton     422: condbranch((loop),R:nlimit R:n1 -- R:nlimit R:n2,gforth        paren_loop,
1.65      anton     423: n2=n1+1;
1.112     pazsan    424: ,if (n2 != nlimit) {
1.1       anton     425: ,:
                    426:  r> r> 1+ r> 2dup =
                    427:  IF >r 1- >r cell+ >r
1.112     pazsan    428:  ELSE >r >r @ >r THEN ;)
1.1       anton     429: 
1.68      anton     430: condbranch((+loop),n R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_plus_loop,
1.1       anton     431: /* !! check this thoroughly */
                    432: /* sign bit manipulation and test: (x^y)<0 is equivalent to (x<0) != (y<0) */
                    433: /* dependent upon two's complement arithmetic */
1.65      anton     434: Cell olddiff = n1-nlimit;
                    435: n2=n1+n;       
1.149     anton     436: ,if (((olddiff^(olddiff+n))    /* the limit is not crossed */
                    437:      &(olddiff^n))            /* OR it is a wrap-around effect */
                    438:     >=0) { /* & is used to avoid having two branches for gforth-native */
1.1       anton     439: ,:
                    440:  r> swap
                    441:  r> r> 2dup - >r
                    442:  2 pick r@ + r@ xor 0< 0=
                    443:  3 pick r> xor 0< 0= or
1.112     pazsan    444:  IF    >r + >r @ >r
1.1       anton     445:  ELSE  >r >r drop cell+ >r THEN ;)
                    446: 
1.15      pazsan    447: \+xconds
1.1       anton     448: 
1.68      anton     449: condbranch((-loop),u R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_minus_loop,
1.65      anton     450: UCell olddiff = n1-nlimit;
                    451: n2=n1-u;
1.112     pazsan    452: ,if (olddiff>u) {
1.1       anton     453: ,)
                    454: 
1.68      anton     455: condbranch((s+loop),n R:nlimit R:n1 -- R:nlimit R:n2,gforth    paren_symmetric_plus_loop,
1.1       anton     456: ""The run-time procedure compiled by S+LOOP. It loops until the index
                    457: crosses the boundary between limit and limit-sign(n). I.e. a symmetric
                    458: version of (+LOOP).""
                    459: /* !! check this thoroughly */
1.65      anton     460: Cell diff = n1-nlimit;
1.1       anton     461: Cell newdiff = diff+n;
                    462: if (n<0) {
                    463:     diff = -diff;
                    464:     newdiff = -newdiff;
                    465: }
1.65      anton     466: n2=n1+n;
1.149     anton     467: ,if (((~diff)|newdiff)<0) { /* use | to avoid two branches for gforth-native */
1.1       anton     468: ,)
                    469: 
1.15      pazsan    470: \+
1.1       anton     471: 
1.112     pazsan    472: (for)   ( ncount -- R:nlimit R:ncount )         cmFORTH         paren_for
1.1       anton     473: /* or (for) = >r -- collides with unloop! */
1.65      anton     474: nlimit=0;
1.1       anton     475: :
                    476:  r> swap 0 >r >r >r ;
                    477: 
1.112     pazsan    478: (do)    ( nlimit nstart -- R:nlimit R:nstart )  gforth          paren_do
1.1       anton     479: :
                    480:  r> swap rot >r >r >r ;
                    481: 
1.112     pazsan    482: (?do) ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth  paren_question_do
                    483: #ifdef NO_IP
                    484:     INST_TAIL;
                    485: #endif
1.1       anton     486: if (nstart == nlimit) {
1.112     pazsan    487: #ifdef NO_IP
                    488:     JUMP(a_target);
                    489: #else
                    490:     SET_IP((Xt *)a_target);
                    491:     INST_TAIL; NEXT_P2;
                    492: #endif
1.1       anton     493: }
1.87      anton     494: SUPER_CONTINUE;
1.1       anton     495: :
                    496:   2dup =
                    497:   IF   r> swap rot >r >r
1.112     pazsan    498:        @ >r
1.1       anton     499:   ELSE r> swap rot >r >r
                    500:        cell+ >r
                    501:   THEN ;                               \ --> CORE-EXT
                    502: 
1.15      pazsan    503: \+xconds
1.1       anton     504: 
1.112     pazsan    505: (+do)  ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth paren_plus_do
                    506: #ifdef NO_IP
                    507:     INST_TAIL;
                    508: #endif
1.1       anton     509: if (nstart >= nlimit) {
1.112     pazsan    510: #ifdef NO_IP
                    511:     JUMP(a_target);
                    512: #else
                    513:     SET_IP((Xt *)a_target);
                    514:     INST_TAIL; NEXT_P2;
                    515: #endif
1.1       anton     516: }
1.87      anton     517: SUPER_CONTINUE;
1.1       anton     518: :
                    519:  swap 2dup
                    520:  r> swap >r swap >r
                    521:  >=
                    522:  IF
1.112     pazsan    523:      @
1.1       anton     524:  ELSE
                    525:      cell+
                    526:  THEN  >r ;
                    527: 
1.112     pazsan    528: (u+do) ( #a_target ulimit ustart -- R:ulimit R:ustart ) gforth paren_u_plus_do
                    529: #ifdef NO_IP
                    530:     INST_TAIL;
                    531: #endif
1.1       anton     532: if (ustart >= ulimit) {
1.112     pazsan    533: #ifdef NO_IP
                    534: JUMP(a_target);
                    535: #else
                    536: SET_IP((Xt *)a_target);
                    537: INST_TAIL; NEXT_P2;
                    538: #endif
1.1       anton     539: }
1.87      anton     540: SUPER_CONTINUE;
1.1       anton     541: :
                    542:  swap 2dup
                    543:  r> swap >r swap >r
                    544:  u>=
                    545:  IF
1.112     pazsan    546:      @
1.1       anton     547:  ELSE
                    548:      cell+
                    549:  THEN  >r ;
                    550: 
1.112     pazsan    551: (-do)  ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth paren_minus_do
                    552: #ifdef NO_IP
                    553:     INST_TAIL;
                    554: #endif
1.1       anton     555: if (nstart <= nlimit) {
1.112     pazsan    556: #ifdef NO_IP
                    557: JUMP(a_target);
                    558: #else
                    559: SET_IP((Xt *)a_target);
                    560: INST_TAIL; NEXT_P2;
                    561: #endif
1.1       anton     562: }
1.87      anton     563: SUPER_CONTINUE;
1.1       anton     564: :
                    565:  swap 2dup
                    566:  r> swap >r swap >r
                    567:  <=
                    568:  IF
1.112     pazsan    569:      @
1.1       anton     570:  ELSE
                    571:      cell+
                    572:  THEN  >r ;
                    573: 
1.112     pazsan    574: (u-do) ( #a_target ulimit ustart -- R:ulimit R:ustart ) gforth paren_u_minus_do
                    575: #ifdef NO_IP
                    576:     INST_TAIL;
                    577: #endif
1.1       anton     578: if (ustart <= ulimit) {
1.112     pazsan    579: #ifdef NO_IP
                    580: JUMP(a_target);
                    581: #else
                    582: SET_IP((Xt *)a_target);
                    583: INST_TAIL; NEXT_P2;
                    584: #endif
1.1       anton     585: }
1.87      anton     586: SUPER_CONTINUE;
1.1       anton     587: :
                    588:  swap 2dup
                    589:  r> swap >r swap >r
                    590:  u<=
                    591:  IF
1.112     pazsan    592:      @
1.1       anton     593:  ELSE
                    594:      cell+
                    595:  THEN  >r ;
                    596: 
1.15      pazsan    597: \+
1.1       anton     598: 
1.5       jwilke    599: \ don't make any assumptions where the return stack is!!
                    600: \ implement this in machine code if it should run quickly!
                    601: 
1.65      anton     602: i      ( R:n -- R:n n )                core
1.1       anton     603: :
1.5       jwilke    604: \ rp@ cell+ @ ;
                    605:   r> r> tuck >r >r ;
1.1       anton     606: 
1.65      anton     607: i'     ( R:w R:w2 -- R:w R:w2 w )              gforth          i_tick
1.1       anton     608: :
1.5       jwilke    609: \ rp@ cell+ cell+ @ ;
                    610:   r> r> r> dup itmp ! >r >r >r itmp @ ;
                    611: variable itmp
1.1       anton     612: 
1.65      anton     613: j      ( R:n R:d1 -- n R:n R:d1 )              core
1.1       anton     614: :
1.5       jwilke    615: \ rp@ cell+ cell+ cell+ @ ;
                    616:   r> r> r> r> dup itmp ! >r >r >r >r itmp @ ;
                    617: [IFUNDEF] itmp variable itmp [THEN]
1.1       anton     618: 
1.65      anton     619: k      ( R:n R:d1 R:d2 -- n R:n R:d1 R:d2 )            gforth
1.1       anton     620: :
1.5       jwilke    621: \ rp@ [ 5 cells ] Literal + @ ;
                    622:   r> r> r> r> r> r> dup itmp ! >r >r >r >r >r >r itmp @ ;
                    623: [IFUNDEF] itmp variable itmp [THEN]
1.31      jwilke    624: 
                    625: \f[THEN]
1.1       anton     626: 
                    627: \ digit is high-level: 0/0%
                    628: 
1.83      pazsan    629: \g strings
                    630: 
1.47      anton     631: move   ( c_from c_to ucount -- )               core
1.52      anton     632: ""Copy the contents of @i{ucount} aus at @i{c-from} to
1.33      anton     633: @i{c-to}. @code{move} works correctly even if the two areas overlap.""
1.52      anton     634: /* !! note that the standard specifies addr, not c-addr */
1.1       anton     635: memmove(c_to,c_from,ucount);
                    636: /* make an Ifdef for bsd and others? */
                    637: :
                    638:  >r 2dup u< IF r> cmove> ELSE r> cmove THEN ;
                    639: 
1.47      anton     640: cmove  ( c_from c_to u -- )    string  c_move
1.33      anton     641: ""Copy the contents of @i{ucount} characters from data space at
                    642: @i{c-from} to @i{c-to}. The copy proceeds @code{char}-by-@code{char}
                    643: from low address to high address; i.e., for overlapping areas it is
                    644: safe if @i{c-to}=<@i{c-from}.""
1.125     anton     645: cmove(c_from,c_to,u);
1.1       anton     646: :
                    647:  bounds ?DO  dup c@ I c! 1+  LOOP  drop ;
                    648: 
1.47      anton     649: cmove> ( c_from c_to u -- )    string  c_move_up
1.33      anton     650: ""Copy the contents of @i{ucount} characters from data space at
                    651: @i{c-from} to @i{c-to}. The copy proceeds @code{char}-by-@code{char}
                    652: from high address to low address; i.e., for overlapping areas it is
                    653: safe if @i{c-to}>=@i{c-from}.""
1.125     anton     654: cmove_up(c_from,c_to,u);
1.1       anton     655: :
                    656:  dup 0= IF  drop 2drop exit  THEN
                    657:  rot over + -rot bounds swap 1-
                    658:  DO  1- dup c@ I c!  -1 +LOOP  drop ;
                    659: 
1.47      anton     660: fill   ( c_addr u c -- )       core
1.52      anton     661: ""Store @i{c} in @i{u} chars starting at @i{c-addr}.""
1.1       anton     662: memset(c_addr,c,u);
                    663: :
                    664:  -rot bounds
                    665:  ?DO  dup I c!  LOOP  drop ;
                    666: 
1.47      anton     667: compare        ( c_addr1 u1 c_addr2 u2 -- n )  string
1.29      crook     668: ""Compare two strings lexicographically. If they are equal, @i{n} is 0; if
                    669: the first string is smaller, @i{n} is -1; if the first string is larger, @i{n}
1.1       anton     670: is 1. Currently this is based on the machine's character
1.26      crook     671: comparison. In the future, this may change to consider the current
1.1       anton     672: locale and its collation order.""
1.46      pazsan    673: /* close ' to keep fontify happy */ 
1.125     anton     674: n = compare(c_addr1, u1, c_addr2, u2);
1.1       anton     675: :
1.43      pazsan    676:  rot 2dup swap - >r min swap -text dup
                    677:  IF  rdrop  ELSE  drop r> sgn  THEN ;
1.143     pazsan    678: : -text ( c_addr1 u c_addr2 -- n )
                    679:  swap bounds
                    680:  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                    681:  ELSE  c@ I c@ - unloop  THEN  sgn ;
1.43      pazsan    682: : sgn ( n -- -1/0/1 )
                    683:  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton     684: 
1.125     anton     685: \ -text is only used by replaced primitives now; move it elsewhere
                    686: \ -text        ( c_addr1 u c_addr2 -- n )      new     dash_text
                    687: \ n = memcmp(c_addr1, c_addr2, u);
                    688: \ if (n<0)
                    689: \   n = -1;
                    690: \ else if (n>0)
                    691: \   n = 1;
                    692: \ :
                    693: \  swap bounds
                    694: \  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                    695: \  ELSE  c@ I c@ - unloop  THEN  sgn ;
                    696: \ : sgn ( n -- -1/0/1 )
                    697: \  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton     698: 
1.47      anton     699: toupper        ( c1 -- c2 )    gforth
1.29      crook     700: ""If @i{c1} is a lower-case character (in the current locale), @i{c2}
1.25      anton     701: is the equivalent upper-case character. All other characters are unchanged.""
1.1       anton     702: c2 = toupper(c1);
                    703: :
                    704:  dup [char] a - [ char z char a - 1 + ] Literal u<  bl and - ;
                    705: 
1.47      anton     706: /string        ( c_addr1 u1 n -- c_addr2 u2 )  string  slash_string
1.29      crook     707: ""Adjust the string specified by @i{c-addr1, u1} to remove @i{n}
1.27      crook     708: characters from the start of the string.""
1.1       anton     709: c_addr2 = c_addr1+n;
                    710: u2 = u1-n;
                    711: :
                    712:  tuck - >r + r> dup 0< IF  - 0  THEN ;
                    713: 
1.83      pazsan    714: \g arith
                    715: 
1.112     pazsan    716: lit    ( #w -- w )             gforth
                    717: :
                    718:  r> dup @ swap cell+ >r ;
                    719: 
1.47      anton     720: +      ( n1 n2 -- n )          core    plus
1.1       anton     721: n = n1+n2;
                    722: 
1.112     pazsan    723: \ lit+ / lit_plus = lit +
                    724: 
                    725: lit+   ( n1 #n2 -- n )         new     lit_plus
                    726: n=n1+n2;
                    727: 
1.1       anton     728: \ PFE-0.9.14 has it differently, but the next release will have it as follows
1.47      anton     729: under+ ( n1 n2 n3 -- n n2 )    gforth  under_plus
1.29      crook     730: ""add @i{n3} to @i{n1} (giving @i{n})""
1.1       anton     731: n = n1+n3;
                    732: :
                    733:  rot + swap ;
                    734: 
1.47      anton     735: -      ( n1 n2 -- n )          core    minus
1.1       anton     736: n = n1-n2;
                    737: :
                    738:  negate + ;
                    739: 
1.47      anton     740: negate ( n1 -- n2 )            core
1.1       anton     741: /* use minus as alias */
                    742: n2 = -n1;
                    743: :
                    744:  invert 1+ ;
                    745: 
1.47      anton     746: 1+     ( n1 -- n2 )            core            one_plus
1.1       anton     747: n2 = n1+1;
                    748: :
                    749:  1 + ;
                    750: 
1.47      anton     751: 1-     ( n1 -- n2 )            core            one_minus
1.1       anton     752: n2 = n1-1;
                    753: :
                    754:  1 - ;
                    755: 
1.47      anton     756: max    ( n1 n2 -- n )  core
1.1       anton     757: if (n1<n2)
                    758:   n = n2;
                    759: else
                    760:   n = n1;
                    761: :
                    762:  2dup < IF swap THEN drop ;
                    763: 
1.47      anton     764: min    ( n1 n2 -- n )  core
1.1       anton     765: if (n1<n2)
                    766:   n = n1;
                    767: else
                    768:   n = n2;
                    769: :
                    770:  2dup > IF swap THEN drop ;
                    771: 
1.52      anton     772: abs    ( n -- u )      core
                    773: if (n<0)
                    774:   u = -n;
1.1       anton     775: else
1.52      anton     776:   u = n;
1.1       anton     777: :
                    778:  dup 0< IF negate THEN ;
                    779: 
1.47      anton     780: *      ( n1 n2 -- n )          core    star
1.1       anton     781: n = n1*n2;
                    782: :
                    783:  um* drop ;
                    784: 
1.47      anton     785: /      ( n1 n2 -- n )          core    slash
1.1       anton     786: n = n1/n2;
                    787: :
                    788:  /mod nip ;
                    789: 
1.47      anton     790: mod    ( n1 n2 -- n )          core
1.1       anton     791: n = n1%n2;
                    792: :
                    793:  /mod drop ;
                    794: 
1.47      anton     795: /mod   ( n1 n2 -- n3 n4 )              core            slash_mod
1.1       anton     796: n4 = n1/n2;
                    797: n3 = n1%n2; /* !! is this correct? look into C standard! */
                    798: :
                    799:  >r s>d r> fm/mod ;
                    800: 
1.47      anton     801: 2*     ( n1 -- n2 )            core            two_star
1.52      anton     802: ""Shift left by 1; also works on unsigned numbers""
1.1       anton     803: n2 = 2*n1;
                    804: :
                    805:  dup + ;
                    806: 
1.47      anton     807: 2/     ( n1 -- n2 )            core            two_slash
1.52      anton     808: ""Arithmetic shift right by 1.  For signed numbers this is a floored
                    809: division by 2 (note that @code{/} not necessarily floors).""
1.1       anton     810: n2 = n1>>1;
                    811: :
                    812:  dup MINI and IF 1 ELSE 0 THEN
                    813:  [ bits/byte cell * 1- ] literal 
1.5       jwilke    814:  0 DO 2* swap dup 2* >r MINI and 
1.1       anton     815:      IF 1 ELSE 0 THEN or r> swap
                    816:  LOOP nip ;
                    817: 
1.47      anton     818: fm/mod ( d1 n1 -- n2 n3 )              core            f_m_slash_mod
1.29      crook     819: ""Floored division: @i{d1} = @i{n3}*@i{n1}+@i{n2}, @i{n1}>@i{n2}>=0 or 0>=@i{n2}>@i{n1}.""
1.1       anton     820: #ifdef BUGGY_LONG_LONG
                    821: DCell r = fmdiv(d1,n1);
                    822: n2=r.hi;
                    823: n3=r.lo;
                    824: #else
                    825: /* assumes that the processor uses either floored or symmetric division */
                    826: n3 = d1/n1;
                    827: n2 = d1%n1;
                    828: /* note that this 1%-3>0 is optimized by the compiler */
                    829: if (1%-3>0 && (d1<0) != (n1<0) && n2!=0) {
                    830:   n3--;
                    831:   n2+=n1;
                    832: }
                    833: #endif
                    834: :
                    835:  dup >r dup 0< IF  negate >r dnegate r>  THEN
                    836:  over       0< IF  tuck + swap  THEN
                    837:  um/mod
                    838:  r> 0< IF  swap negate swap  THEN ;
                    839: 
1.47      anton     840: sm/rem ( d1 n1 -- n2 n3 )              core            s_m_slash_rem
1.29      crook     841: ""Symmetric division: @i{d1} = @i{n3}*@i{n1}+@i{n2}, sign(@i{n2})=sign(@i{d1}) or 0.""
1.1       anton     842: #ifdef BUGGY_LONG_LONG
                    843: DCell r = smdiv(d1,n1);
                    844: n2=r.hi;
                    845: n3=r.lo;
                    846: #else
                    847: /* assumes that the processor uses either floored or symmetric division */
                    848: n3 = d1/n1;
                    849: n2 = d1%n1;
                    850: /* note that this 1%-3<0 is optimized by the compiler */
                    851: if (1%-3<0 && (d1<0) != (n1<0) && n2!=0) {
                    852:   n3++;
                    853:   n2-=n1;
                    854: }
                    855: #endif
                    856: :
                    857:  over >r dup >r abs -rot
                    858:  dabs rot um/mod
                    859:  r> r@ xor 0< IF       negate       THEN
                    860:  r>        0< IF  swap negate swap  THEN ;
                    861: 
1.47      anton     862: m*     ( n1 n2 -- d )          core    m_star
1.1       anton     863: #ifdef BUGGY_LONG_LONG
                    864: d = mmul(n1,n2);
                    865: #else
                    866: d = (DCell)n1 * (DCell)n2;
                    867: #endif
                    868: :
                    869:  2dup      0< and >r
                    870:  2dup swap 0< and >r
                    871:  um* r> - r> - ;
                    872: 
1.47      anton     873: um*    ( u1 u2 -- ud )         core    u_m_star
1.1       anton     874: /* use u* as alias */
                    875: #ifdef BUGGY_LONG_LONG
                    876: ud = ummul(u1,u2);
                    877: #else
                    878: ud = (UDCell)u1 * (UDCell)u2;
                    879: #endif
                    880: :
1.137     pazsan    881:    0 -rot dup [ 8 cells ] literal -
1.1       anton     882:    DO
1.137     pazsan    883:        dup 0< I' and d2*+ drop
                    884:    LOOP ;
1.1       anton     885: : d2*+ ( ud n -- ud+n c )
                    886:    over MINI
                    887:    and >r >r 2dup d+ swap r> + swap r> ;
                    888: 
1.47      anton     889: um/mod ( ud u1 -- u2 u3 )              core    u_m_slash_mod
1.32      anton     890: ""ud=u3*u1+u2, u1>u2>=0""
1.1       anton     891: #ifdef BUGGY_LONG_LONG
                    892: UDCell r = umdiv(ud,u1);
                    893: u2=r.hi;
                    894: u3=r.lo;
                    895: #else
                    896: u3 = ud/u1;
                    897: u2 = ud%u1;
                    898: #endif
                    899: :
                    900:    0 swap [ 8 cells 1 + ] literal 0
1.5       jwilke    901:    ?DO /modstep
1.1       anton     902:    LOOP drop swap 1 rshift or swap ;
                    903: : /modstep ( ud c R: u -- ud-?u c R: u )
1.5       jwilke    904:    >r over r@ u< 0= or IF r@ - 1 ELSE 0 THEN  d2*+ r> ;
1.1       anton     905: : d2*+ ( ud n -- ud+n c )
                    906:    over MINI
                    907:    and >r >r 2dup d+ swap r> + swap r> ;
                    908: 
1.47      anton     909: m+     ( d1 n -- d2 )          double          m_plus
1.1       anton     910: #ifdef BUGGY_LONG_LONG
                    911: d2.lo = d1.lo+n;
                    912: d2.hi = d1.hi - (n<0) + (d2.lo<d1.lo);
                    913: #else
                    914: d2 = d1+n;
                    915: #endif
                    916: :
                    917:  s>d d+ ;
                    918: 
1.47      anton     919: d+     ( d1 d2 -- d )          double  d_plus
1.1       anton     920: #ifdef BUGGY_LONG_LONG
                    921: d.lo = d1.lo+d2.lo;
                    922: d.hi = d1.hi + d2.hi + (d.lo<d1.lo);
                    923: #else
                    924: d = d1+d2;
                    925: #endif
                    926: :
                    927:  rot + >r tuck + swap over u> r> swap - ;
                    928: 
1.47      anton     929: d-     ( d1 d2 -- d )          double          d_minus
1.1       anton     930: #ifdef BUGGY_LONG_LONG
                    931: d.lo = d1.lo - d2.lo;
                    932: d.hi = d1.hi-d2.hi-(d1.lo<d2.lo);
                    933: #else
                    934: d = d1-d2;
                    935: #endif
                    936: :
                    937:  dnegate d+ ;
                    938: 
1.47      anton     939: dnegate        ( d1 -- d2 )            double  d_negate
1.1       anton     940: /* use dminus as alias */
                    941: #ifdef BUGGY_LONG_LONG
                    942: d2 = dnegate(d1);
                    943: #else
                    944: d2 = -d1;
                    945: #endif
                    946: :
                    947:  invert swap negate tuck 0= - ;
                    948: 
1.47      anton     949: d2*    ( d1 -- d2 )            double          d_two_star
1.52      anton     950: ""Shift left by 1; also works on unsigned numbers""
1.1       anton     951: #ifdef BUGGY_LONG_LONG
                    952: d2.lo = d1.lo<<1;
                    953: d2.hi = (d1.hi<<1) | (d1.lo>>(CELL_BITS-1));
                    954: #else
                    955: d2 = 2*d1;
                    956: #endif
                    957: :
                    958:  2dup d+ ;
                    959: 
1.47      anton     960: d2/    ( d1 -- d2 )            double          d_two_slash
1.52      anton     961: ""Arithmetic shift right by 1.  For signed numbers this is a floored
                    962: division by 2.""
1.1       anton     963: #ifdef BUGGY_LONG_LONG
                    964: d2.hi = d1.hi>>1;
                    965: d2.lo= (d1.lo>>1) | (d1.hi<<(CELL_BITS-1));
                    966: #else
                    967: d2 = d1>>1;
                    968: #endif
                    969: :
                    970:  dup 1 and >r 2/ swap 2/ [ 1 8 cells 1- lshift 1- ] Literal and
                    971:  r> IF  [ 1 8 cells 1- lshift ] Literal + THEN  swap ;
                    972: 
1.47      anton     973: and    ( w1 w2 -- w )          core
1.1       anton     974: w = w1&w2;
                    975: 
1.47      anton     976: or     ( w1 w2 -- w )          core
1.1       anton     977: w = w1|w2;
                    978: :
                    979:  invert swap invert and invert ;
                    980: 
1.47      anton     981: xor    ( w1 w2 -- w )          core    x_or
1.1       anton     982: w = w1^w2;
                    983: 
1.47      anton     984: invert ( w1 -- w2 )            core
1.1       anton     985: w2 = ~w1;
                    986: :
                    987:  MAXU xor ;
                    988: 
1.47      anton     989: rshift ( u1 n -- u2 )          core    r_shift
1.53      anton     990: ""Logical shift right by @i{n} bits.""
1.1       anton     991:   u2 = u1>>n;
                    992: :
                    993:     0 ?DO 2/ MAXI and LOOP ;
                    994: 
1.47      anton     995: lshift ( u1 n -- u2 )          core    l_shift
1.1       anton     996:   u2 = u1<<n;
                    997: :
                    998:     0 ?DO 2* LOOP ;
                    999: 
1.110     pazsan   1000: \g compare
                   1001: 
1.1       anton    1002: \ comparisons(prefix, args, prefix, arg1, arg2, wordsets...)
                   1003: define(comparisons,
1.47      anton    1004: $1=    ( $2 -- f )             $6      $3equals
1.1       anton    1005: f = FLAG($4==$5);
                   1006: :
                   1007:     [ char $1x char 0 = [IF]
                   1008:        ] IF false ELSE true THEN [
                   1009:     [ELSE]
                   1010:        ] xor 0= [
                   1011:     [THEN] ] ;
                   1012: 
1.47      anton    1013: $1<>   ( $2 -- f )             $7      $3not_equals
1.1       anton    1014: f = FLAG($4!=$5);
                   1015: :
                   1016:     [ char $1x char 0 = [IF]
                   1017:        ] IF true ELSE false THEN [
                   1018:     [ELSE]
                   1019:        ] xor 0<> [
                   1020:     [THEN] ] ;
                   1021: 
1.47      anton    1022: $1<    ( $2 -- f )             $8      $3less_than
1.1       anton    1023: f = FLAG($4<$5);
                   1024: :
                   1025:     [ char $1x char 0 = [IF]
                   1026:        ] MINI and 0<> [
                   1027:     [ELSE] char $1x char u = [IF]
                   1028:        ]   2dup xor 0<  IF nip ELSE - THEN 0<  [
                   1029:        [ELSE]
                   1030:            ] MINI xor >r MINI xor r> u< [
                   1031:        [THEN]
                   1032:     [THEN] ] ;
                   1033: 
1.47      anton    1034: $1>    ( $2 -- f )             $9      $3greater_than
1.1       anton    1035: f = FLAG($4>$5);
                   1036: :
                   1037:     [ char $1x char 0 = [IF] ] negate [ [ELSE] ] swap [ [THEN] ]
                   1038:     $1< ;
                   1039: 
1.47      anton    1040: $1<=   ( $2 -- f )             gforth  $3less_or_equal
1.1       anton    1041: f = FLAG($4<=$5);
                   1042: :
                   1043:     $1> 0= ;
                   1044: 
1.47      anton    1045: $1>=   ( $2 -- f )             gforth  $3greater_or_equal
1.1       anton    1046: f = FLAG($4>=$5);
                   1047: :
                   1048:     [ char $1x char 0 = [IF] ] negate [ [ELSE] ] swap [ [THEN] ]
                   1049:     $1<= ;
                   1050: 
                   1051: )
                   1052: 
                   1053: comparisons(0, n, zero_, n, 0, core, core-ext, core, core-ext)
                   1054: comparisons(, n1 n2, , n1, n2, core, core-ext, core, core)
                   1055: comparisons(u, u1 u2, u_, u1, u2, gforth, gforth, core, core-ext)
                   1056: 
                   1057: \ dcomparisons(prefix, args, prefix, arg1, arg2, wordsets...)
                   1058: define(dcomparisons,
1.47      anton    1059: $1=    ( $2 -- f )             $6      $3equals
1.1       anton    1060: #ifdef BUGGY_LONG_LONG
                   1061: f = FLAG($4.lo==$5.lo && $4.hi==$5.hi);
                   1062: #else
                   1063: f = FLAG($4==$5);
                   1064: #endif
                   1065: 
1.47      anton    1066: $1<>   ( $2 -- f )             $7      $3not_equals
1.1       anton    1067: #ifdef BUGGY_LONG_LONG
                   1068: f = FLAG($4.lo!=$5.lo || $4.hi!=$5.hi);
                   1069: #else
                   1070: f = FLAG($4!=$5);
                   1071: #endif
                   1072: 
1.47      anton    1073: $1<    ( $2 -- f )             $8      $3less_than
1.1       anton    1074: #ifdef BUGGY_LONG_LONG
                   1075: f = FLAG($4.hi==$5.hi ? $4.lo<$5.lo : $4.hi<$5.hi);
                   1076: #else
                   1077: f = FLAG($4<$5);
                   1078: #endif
                   1079: 
1.47      anton    1080: $1>    ( $2 -- f )             $9      $3greater_than
1.1       anton    1081: #ifdef BUGGY_LONG_LONG
                   1082: f = FLAG($4.hi==$5.hi ? $4.lo>$5.lo : $4.hi>$5.hi);
                   1083: #else
                   1084: f = FLAG($4>$5);
                   1085: #endif
                   1086: 
1.47      anton    1087: $1<=   ( $2 -- f )             gforth  $3less_or_equal
1.1       anton    1088: #ifdef BUGGY_LONG_LONG
                   1089: f = FLAG($4.hi==$5.hi ? $4.lo<=$5.lo : $4.hi<=$5.hi);
                   1090: #else
                   1091: f = FLAG($4<=$5);
                   1092: #endif
                   1093: 
1.47      anton    1094: $1>=   ( $2 -- f )             gforth  $3greater_or_equal
1.1       anton    1095: #ifdef BUGGY_LONG_LONG
                   1096: f = FLAG($4.hi==$5.hi ? $4.lo>=$5.lo : $4.hi>=$5.hi);
                   1097: #else
                   1098: f = FLAG($4>=$5);
                   1099: #endif
                   1100: 
                   1101: )
                   1102: 
1.15      pazsan   1103: \+dcomps
1.1       anton    1104: 
                   1105: dcomparisons(d, d1 d2, d_, d1, d2, double, gforth, double, gforth)
                   1106: dcomparisons(d0, d, d_zero_, d, DZERO, double, gforth, double, gforth)
                   1107: dcomparisons(du, ud1 ud2, d_u_, ud1, ud2, gforth, gforth, double-ext, gforth)
                   1108: 
1.15      pazsan   1109: \+
1.1       anton    1110: 
1.47      anton    1111: within ( u1 u2 u3 -- f )               core-ext
1.32      anton    1112: ""u2=<u1<u3 or: u3=<u2 and u1 is not in [u3,u2).  This works for
                   1113: unsigned and signed numbers (but not a mixture).  Another way to think
                   1114: about this word is to consider the numbers as a circle (wrapping
                   1115: around from @code{max-u} to 0 for unsigned, and from @code{max-n} to
                   1116: min-n for signed numbers); now consider the range from u2 towards
                   1117: increasing numbers up to and excluding u3 (giving an empty range if
1.52      anton    1118: u2=u3); if u1 is in this range, @code{within} returns true.""
1.1       anton    1119: f = FLAG(u1-u2 < u3-u2);
                   1120: :
                   1121:  over - >r - r> u< ;
                   1122: 
1.112     pazsan   1123: \g stack
                   1124: 
                   1125: useraddr       ( #u -- a_addr )        new
                   1126: a_addr = (Cell *)(up+u);
                   1127: 
                   1128: up!    ( a_addr -- )   gforth  up_store
                   1129: UP=up=(char *)a_addr;
                   1130: :
                   1131:  up ! ;
                   1132: Variable UP
                   1133: 
1.47      anton    1134: sp@    ( -- a_addr )           gforth          sp_fetch
1.1       anton    1135: a_addr = sp+1;
                   1136: 
1.47      anton    1137: sp!    ( a_addr -- )           gforth          sp_store
1.1       anton    1138: sp = a_addr;
1.64      anton    1139: /* works with and without spTOS caching */
1.1       anton    1140: 
1.47      anton    1141: rp@    ( -- a_addr )           gforth          rp_fetch
1.1       anton    1142: a_addr = rp;
                   1143: 
1.47      anton    1144: rp!    ( a_addr -- )           gforth          rp_store
1.1       anton    1145: rp = a_addr;
                   1146: 
1.15      pazsan   1147: \+floating
1.1       anton    1148: 
1.47      anton    1149: fp@    ( -- f_addr )   gforth  fp_fetch
1.1       anton    1150: f_addr = fp;
                   1151: 
1.47      anton    1152: fp!    ( f_addr -- )   gforth  fp_store
1.1       anton    1153: fp = f_addr;
                   1154: 
1.15      pazsan   1155: \+
1.1       anton    1156: 
1.65      anton    1157: >r     ( w -- R:w )            core    to_r
1.1       anton    1158: :
                   1159:  (>r) ;
                   1160: : (>r)  rp@ cell+ @ rp@ ! rp@ cell+ ! ;
                   1161: 
1.65      anton    1162: r>     ( R:w -- w )            core    r_from
1.1       anton    1163: :
                   1164:  rp@ cell+ @ rp@ @ rp@ cell+ ! (rdrop) rp@ ! ;
                   1165: Create (rdrop) ' ;s A,
                   1166: 
1.65      anton    1167: rdrop  ( R:w -- )              gforth
1.1       anton    1168: :
                   1169:  r> r> drop >r ;
                   1170: 
1.136     pazsan   1171: 2>r    ( d -- R:d )    core-ext        two_to_r
1.1       anton    1172: :
                   1173:  swap r> swap >r swap >r >r ;
                   1174: 
1.136     pazsan   1175: 2r>    ( R:d -- d )    core-ext        two_r_from
1.1       anton    1176: :
                   1177:  r> r> swap r> swap >r swap ;
                   1178: 
1.136     pazsan   1179: 2r@    ( R:d -- R:d d )        core-ext        two_r_fetch
1.1       anton    1180: :
                   1181:  i' j ;
                   1182: 
1.136     pazsan   1183: 2rdrop ( R:d -- )              gforth  two_r_drop
1.1       anton    1184: :
                   1185:  r> r> drop r> drop >r ;
                   1186: 
1.47      anton    1187: over   ( w1 w2 -- w1 w2 w1 )           core
1.1       anton    1188: :
                   1189:  sp@ cell+ @ ;
                   1190: 
1.47      anton    1191: drop   ( w -- )                core
1.1       anton    1192: :
                   1193:  IF THEN ;
                   1194: 
1.47      anton    1195: swap   ( w1 w2 -- w2 w1 )              core
1.1       anton    1196: :
                   1197:  >r (swap) ! r> (swap) @ ;
                   1198: Variable (swap)
                   1199: 
1.47      anton    1200: dup    ( w -- w w )            core    dupe
1.1       anton    1201: :
                   1202:  sp@ @ ;
                   1203: 
1.47      anton    1204: rot    ( w1 w2 w3 -- w2 w3 w1 )        core    rote
1.1       anton    1205: :
                   1206: [ defined? (swap) [IF] ]
                   1207:     (swap) ! (rot) ! >r (rot) @ (swap) @ r> ;
                   1208: Variable (rot)
                   1209: [ELSE] ]
                   1210:     >r swap r> swap ;
                   1211: [THEN]
                   1212: 
1.47      anton    1213: -rot   ( w1 w2 w3 -- w3 w1 w2 )        gforth  not_rote
1.1       anton    1214: :
                   1215:  rot rot ;
                   1216: 
1.47      anton    1217: nip    ( w1 w2 -- w2 )         core-ext
1.1       anton    1218: :
1.6       jwilke   1219:  swap drop ;
1.1       anton    1220: 
1.47      anton    1221: tuck   ( w1 w2 -- w2 w1 w2 )   core-ext
1.1       anton    1222: :
                   1223:  swap over ;
                   1224: 
1.47      anton    1225: ?dup   ( w -- w )                      core    question_dupe
1.52      anton    1226: ""Actually the stack effect is: @code{( w -- 0 | w w )}.  It performs a
                   1227: @code{dup} if w is nonzero.""
1.1       anton    1228: if (w!=0) {
1.64      anton    1229:   IF_spTOS(*sp-- = w;)
1.1       anton    1230: #ifndef USE_TOS
                   1231:   *--sp = w;
                   1232: #endif
                   1233: }
                   1234: :
                   1235:  dup IF dup THEN ;
                   1236: 
1.47      anton    1237: pick   ( u -- w )                      core-ext
1.52      anton    1238: ""Actually the stack effect is @code{ x0 ... xu u -- x0 ... xu x0 }.""
1.1       anton    1239: w = sp[u+1];
                   1240: :
                   1241:  1+ cells sp@ + @ ;
                   1242: 
1.47      anton    1243: 2drop  ( w1 w2 -- )            core    two_drop
1.1       anton    1244: :
                   1245:  drop drop ;
                   1246: 
1.47      anton    1247: 2dup   ( w1 w2 -- w1 w2 w1 w2 )        core    two_dupe
1.1       anton    1248: :
                   1249:  over over ;
                   1250: 
1.47      anton    1251: 2over  ( w1 w2 w3 w4 -- w1 w2 w3 w4 w1 w2 )    core    two_over
1.1       anton    1252: :
                   1253:  3 pick 3 pick ;
                   1254: 
1.47      anton    1255: 2swap  ( w1 w2 w3 w4 -- w3 w4 w1 w2 )  core    two_swap
1.1       anton    1256: :
                   1257:  rot >r rot r> ;
                   1258: 
1.47      anton    1259: 2rot   ( w1 w2 w3 w4 w5 w6 -- w3 w4 w5 w6 w1 w2 )      double-ext      two_rote
1.1       anton    1260: :
                   1261:  >r >r 2swap r> r> 2swap ;
                   1262: 
1.47      anton    1263: 2nip   ( w1 w2 w3 w4 -- w3 w4 )        gforth  two_nip
1.1       anton    1264: :
                   1265:  2swap 2drop ;
                   1266: 
1.47      anton    1267: 2tuck  ( w1 w2 w3 w4 -- w3 w4 w1 w2 w3 w4 )    gforth  two_tuck
1.1       anton    1268: :
                   1269:  2swap 2over ;
                   1270: 
                   1271: \ toggle is high-level: 0.11/0.42%
                   1272: 
1.110     pazsan   1273: \g memory
                   1274: 
1.47      anton    1275: @      ( a_addr -- w )         core    fetch
1.52      anton    1276: ""@i{w} is the cell stored at @i{a_addr}.""
1.1       anton    1277: w = *a_addr;
                   1278: 
1.112     pazsan   1279: \ lit@ / lit_fetch = lit @
                   1280: 
                   1281: lit@           ( #a_addr -- w ) new    lit_fetch
                   1282: w = *a_addr;
                   1283: 
1.47      anton    1284: !      ( w a_addr -- )         core    store
1.52      anton    1285: ""Store @i{w} into the cell at @i{a-addr}.""
1.1       anton    1286: *a_addr = w;
                   1287: 
1.47      anton    1288: +!     ( n a_addr -- )         core    plus_store
1.52      anton    1289: ""Add @i{n} to the cell at @i{a-addr}.""
1.1       anton    1290: *a_addr += n;
                   1291: :
                   1292:  tuck @ + swap ! ;
                   1293: 
1.47      anton    1294: c@     ( c_addr -- c )         core    c_fetch
1.52      anton    1295: ""@i{c} is the char stored at @i{c_addr}.""
1.1       anton    1296: c = *c_addr;
                   1297: :
                   1298: [ bigendian [IF] ]
                   1299:     [ cell>bit 4 = [IF] ]
                   1300:        dup [ 0 cell - ] Literal and @ swap 1 and
                   1301:        IF  $FF and  ELSE  8>>  THEN  ;
                   1302:     [ [ELSE] ]
                   1303:        dup [ cell 1- ] literal and
                   1304:        tuck - @ swap [ cell 1- ] literal xor
                   1305:        0 ?DO 8>> LOOP $FF and
                   1306:     [ [THEN] ]
                   1307: [ [ELSE] ]
                   1308:     [ cell>bit 4 = [IF] ]
                   1309:        dup [ 0 cell - ] Literal and @ swap 1 and
                   1310:        IF  8>>  ELSE  $FF and  THEN
                   1311:     [ [ELSE] ]
                   1312:        dup [ cell  1- ] literal and 
                   1313:        tuck - @ swap
                   1314:        0 ?DO 8>> LOOP 255 and
                   1315:     [ [THEN] ]
                   1316: [ [THEN] ]
                   1317: ;
                   1318: : 8>> 2/ 2/ 2/ 2/  2/ 2/ 2/ 2/ ;
                   1319: 
1.47      anton    1320: c!     ( c c_addr -- )         core    c_store
1.52      anton    1321: ""Store @i{c} into the char at @i{c-addr}.""
1.1       anton    1322: *c_addr = c;
                   1323: :
                   1324: [ bigendian [IF] ]
                   1325:     [ cell>bit 4 = [IF] ]
                   1326:        tuck 1 and IF  $FF and  ELSE  8<<  THEN >r
                   1327:        dup -2 and @ over 1 and cells masks + @ and
                   1328:        r> or swap -2 and ! ;
                   1329:        Create masks $00FF , $FF00 ,
                   1330:     [ELSE] ]
                   1331:        dup [ cell 1- ] literal and dup 
                   1332:        [ cell 1- ] literal xor >r
                   1333:        - dup @ $FF r@ 0 ?DO 8<< LOOP invert and
                   1334:        rot $FF and r> 0 ?DO 8<< LOOP or swap ! ;
                   1335:     [THEN]
                   1336: [ELSE] ]
                   1337:     [ cell>bit 4 = [IF] ]
                   1338:        tuck 1 and IF  8<<  ELSE  $FF and  THEN >r
                   1339:        dup -2 and @ over 1 and cells masks + @ and
                   1340:        r> or swap -2 and ! ;
                   1341:        Create masks $FF00 , $00FF ,
                   1342:     [ELSE] ]
                   1343:        dup [ cell 1- ] literal and dup >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: [THEN]
                   1348: : 8<< 2* 2* 2* 2*  2* 2* 2* 2* ;
                   1349: 
1.47      anton    1350: 2!     ( w1 w2 a_addr -- )             core    two_store
1.52      anton    1351: ""Store @i{w2} into the cell at @i{c-addr} and @i{w1} into the next cell.""
1.1       anton    1352: a_addr[0] = w2;
                   1353: a_addr[1] = w1;
                   1354: :
                   1355:  tuck ! cell+ ! ;
                   1356: 
1.47      anton    1357: 2@     ( a_addr -- w1 w2 )             core    two_fetch
1.52      anton    1358: ""@i{w2} is the content of the cell stored at @i{a-addr}, @i{w1} is
                   1359: the content of the next cell.""
1.1       anton    1360: w2 = a_addr[0];
                   1361: w1 = a_addr[1];
                   1362: :
                   1363:  dup cell+ @ swap @ ;
                   1364: 
1.47      anton    1365: cell+  ( a_addr1 -- a_addr2 )  core    cell_plus
1.52      anton    1366: ""@code{1 cells +}""
1.1       anton    1367: a_addr2 = a_addr1+1;
                   1368: :
                   1369:  cell + ;
                   1370: 
1.47      anton    1371: cells  ( n1 -- n2 )            core
1.52      anton    1372: "" @i{n2} is the number of address units of @i{n1} cells.""
1.1       anton    1373: n2 = n1 * sizeof(Cell);
                   1374: :
                   1375:  [ cell
                   1376:  2/ dup [IF] ] 2* [ [THEN]
                   1377:  2/ dup [IF] ] 2* [ [THEN]
                   1378:  2/ dup [IF] ] 2* [ [THEN]
                   1379:  2/ dup [IF] ] 2* [ [THEN]
                   1380:  drop ] ;
                   1381: 
1.47      anton    1382: char+  ( c_addr1 -- c_addr2 )  core    char_plus
1.52      anton    1383: ""@code{1 chars +}.""
1.1       anton    1384: c_addr2 = c_addr1 + 1;
                   1385: :
                   1386:  1+ ;
                   1387: 
1.47      anton    1388: (chars)        ( n1 -- n2 )    gforth  paren_chars
1.1       anton    1389: n2 = n1 * sizeof(Char);
                   1390: :
                   1391:  ;
                   1392: 
1.47      anton    1393: count  ( c_addr1 -- c_addr2 u )        core
1.56      anton    1394: ""@i{c-addr2} is the first character and @i{u} the length of the
                   1395: counted string at @i{c-addr1}.""
1.1       anton    1396: u = *c_addr1;
                   1397: c_addr2 = c_addr1+1;
                   1398: :
                   1399:  dup 1+ swap c@ ;
                   1400: 
1.110     pazsan   1401: \g compiler
                   1402: 
1.138     pazsan   1403: \+f83headerstring
                   1404: 
                   1405: (f83find)      ( c_addr u f83name1 -- f83name2 )       new     paren_f83find
                   1406: for (; f83name1 != NULL; f83name1 = (struct F83Name *)(f83name1->next))
                   1407:   if ((UCell)F83NAME_COUNT(f83name1)==u &&
                   1408:       memcasecmp(c_addr, f83name1->name, u)== 0 /* or inline? */)
                   1409:     break;
                   1410: f83name2=f83name1;
                   1411: :
                   1412:     BEGIN  dup WHILE  (find-samelen)  dup  WHILE
                   1413:        >r 2dup r@ cell+ char+ capscomp  0=
                   1414:        IF  2drop r>  EXIT  THEN
                   1415:        r> @
                   1416:     REPEAT  THEN  nip nip ;
                   1417: : (find-samelen) ( u f83name1 -- u f83name2/0 )
                   1418:     BEGIN  2dup cell+ c@ $1F and <> WHILE  @  dup 0= UNTIL  THEN ;
                   1419: : capscomp ( c_addr1 u c_addr2 -- n )
                   1420:  swap bounds
                   1421:  ?DO  dup c@ I c@ <>
                   1422:      IF  dup c@ toupper I c@ toupper =
                   1423:      ELSE  true  THEN  WHILE  1+  LOOP  drop 0
                   1424:  ELSE  c@ toupper I c@ toupper - unloop  THEN  sgn ;
                   1425: : sgn ( n -- -1/0/1 )
                   1426:  dup 0= IF EXIT THEN  0< 2* 1+ ;
                   1427: 
                   1428: \-
                   1429: 
1.112     pazsan   1430: (listlfind)    ( c_addr u longname1 -- longname2 )     new     paren_listlfind
1.125     anton    1431: longname2=listlfind(c_addr, u, longname1);
1.1       anton    1432: :
1.112     pazsan   1433:     BEGIN  dup WHILE  (findl-samelen)  dup  WHILE
                   1434:        >r 2dup r@ cell+ cell+ capscomp  0=
1.1       anton    1435:        IF  2drop r>  EXIT  THEN
                   1436:        r> @
                   1437:     REPEAT  THEN  nip nip ;
1.112     pazsan   1438: : (findl-samelen) ( u longname1 -- u longname2/0 )
                   1439:     BEGIN  2dup cell+ @ lcount-mask and <> WHILE  @  dup 0= UNTIL  THEN ;
1.144     pazsan   1440: : capscomp ( c_addr1 u c_addr2 -- n )
                   1441:  swap bounds
                   1442:  ?DO  dup c@ I c@ <>
                   1443:      IF  dup c@ toupper I c@ toupper =
                   1444:      ELSE  true  THEN  WHILE  1+  LOOP  drop 0
                   1445:  ELSE  c@ toupper I c@ toupper - unloop  THEN  sgn ;
                   1446: : sgn ( n -- -1/0/1 )
                   1447:  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton    1448: 
1.15      pazsan   1449: \+hash
1.1       anton    1450: 
1.112     pazsan   1451: (hashlfind)    ( c_addr u a_addr -- longname2 )        new     paren_hashlfind
1.125     anton    1452: longname2 = hashlfind(c_addr, u, a_addr);
1.1       anton    1453: :
                   1454:  BEGIN  dup  WHILE
1.112     pazsan   1455:         2@ >r >r dup r@ cell+ @ lcount-mask and =
                   1456:         IF  2dup r@ cell+ cell+ capscomp 0=
1.1       anton    1457:            IF  2drop r> rdrop  EXIT  THEN  THEN
                   1458:        rdrop r>
                   1459:  REPEAT nip nip ;
                   1460: 
1.112     pazsan   1461: (tablelfind)   ( c_addr u a_addr -- longname2 )        new     paren_tablelfind
1.1       anton    1462: ""A case-sensitive variant of @code{(hashfind)}""
1.125     anton    1463: longname2 = tablelfind(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+ -text 0=
1.1       anton    1468:            IF  2drop r> rdrop  EXIT  THEN  THEN
                   1469:        rdrop r>
                   1470:  REPEAT nip nip ;
1.138     pazsan   1471: : -text ( c_addr1 u c_addr2 -- n )
                   1472:  swap bounds
                   1473:  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                   1474:  ELSE  c@ I c@ - unloop  THEN  sgn ;
                   1475: : sgn ( n -- -1/0/1 )
                   1476:  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton    1477: 
1.47      anton    1478: (hashkey1)     ( c_addr u ubits -- ukey )              gforth  paren_hashkey1
1.1       anton    1479: ""ukey is the hash key for the string c_addr u fitting in ubits bits""
1.125     anton    1480: ukey = hashkey1(c_addr, u, ubits);
1.1       anton    1481: :
                   1482:  dup rot-values + c@ over 1 swap lshift 1- >r
                   1483:  tuck - 2swap r> 0 2swap bounds
                   1484:  ?DO  dup 4 pick lshift swap 3 pick rshift or
                   1485:       I c@ toupper xor
                   1486:       over and  LOOP
                   1487:  nip nip nip ;
                   1488: Create rot-values
                   1489:   5 c, 0 c, 1 c, 2 c, 3 c,  4 c, 5 c, 5 c, 5 c, 5 c,
                   1490:   3 c, 5 c, 5 c, 5 c, 5 c,  7 c, 5 c, 5 c, 5 c, 5 c,
                   1491:   7 c, 5 c, 5 c, 5 c, 5 c,  6 c, 5 c, 5 c, 5 c, 5 c,
                   1492:   7 c, 5 c, 5 c,
1.138     pazsan   1493: 
                   1494: \+
1.1       anton    1495: 
1.15      pazsan   1496: \+
1.1       anton    1497: 
1.47      anton    1498: (parse-white)  ( c_addr1 u1 -- c_addr2 u2 )    gforth  paren_parse_white
1.125     anton    1499: struct Cellpair r=parse_white(c_addr1, u1);
                   1500: c_addr2 = (Char *)(r.n1);
                   1501: u2 = r.n2;
1.1       anton    1502: :
                   1503:  BEGIN  dup  WHILE  over c@ bl <=  WHILE  1 /string
                   1504:  REPEAT  THEN  2dup
                   1505:  BEGIN  dup  WHILE  over c@ bl >   WHILE  1 /string
                   1506:  REPEAT  THEN  nip - ;
                   1507: 
1.47      anton    1508: aligned        ( c_addr -- a_addr )    core
1.29      crook    1509: "" @i{a-addr} is the first aligned address greater than or equal to @i{c-addr}.""
1.1       anton    1510: a_addr = (Cell *)((((Cell)c_addr)+(sizeof(Cell)-1))&(-sizeof(Cell)));
                   1511: :
                   1512:  [ cell 1- ] Literal + [ -1 cells ] Literal and ;
                   1513: 
1.47      anton    1514: faligned       ( c_addr -- f_addr )    float   f_aligned
1.29      crook    1515: "" @i{f-addr} is the first float-aligned address greater than or equal to @i{c-addr}.""
1.1       anton    1516: f_addr = (Float *)((((Cell)c_addr)+(sizeof(Float)-1))&(-sizeof(Float)));
                   1517: :
                   1518:  [ 1 floats 1- ] Literal + [ -1 floats ] Literal and ;
                   1519: 
1.35      jwilke   1520: \ threading stuff is currently only interesting if we have a compiler
                   1521: \fhas? standardthreading has? compiler and [IF]
1.47      anton    1522: threading-method       ( -- n )        gforth  threading_method
1.1       anton    1523: ""0 if the engine is direct threaded. Note that this may change during
                   1524: the lifetime of an image.""
                   1525: #if defined(DOUBLY_INDIRECT)
                   1526: n=2;
                   1527: #else
                   1528: # if defined(DIRECT_THREADED)
                   1529: n=0;
                   1530: # else
                   1531: n=1;
                   1532: # endif
                   1533: #endif
                   1534: :
                   1535:  1 ;
1.28      jwilke   1536: 
1.35      jwilke   1537: \f[THEN]
1.1       anton    1538: 
1.83      pazsan   1539: \g hostos
                   1540: 
1.47      anton    1541: key-file       ( wfileid -- n )                gforth  paren_key_file
1.17      pazsan   1542: #ifdef HAS_FILE
1.1       anton    1543: fflush(stdout);
1.12      pazsan   1544: n = key((FILE*)wfileid);
1.17      pazsan   1545: #else
                   1546: n = key(stdin);
                   1547: #endif
1.1       anton    1548: 
1.47      anton    1549: key?-file      ( wfileid -- n )                facility        key_q_file
1.17      pazsan   1550: #ifdef HAS_FILE
1.1       anton    1551: fflush(stdout);
1.12      pazsan   1552: n = key_query((FILE*)wfileid);
1.17      pazsan   1553: #else
                   1554: n = key_query(stdin);
                   1555: #endif
                   1556: 
                   1557: \+os
1.12      pazsan   1558: 
1.47      anton    1559: stdin  ( -- wfileid )  gforth
1.12      pazsan   1560: wfileid = (Cell)stdin;
1.1       anton    1561: 
1.47      anton    1562: stdout ( -- wfileid )  gforth
1.1       anton    1563: wfileid = (Cell)stdout;
                   1564: 
1.47      anton    1565: stderr ( -- wfileid )  gforth
1.1       anton    1566: wfileid = (Cell)stderr;
                   1567: 
1.47      anton    1568: form   ( -- urows ucols )      gforth
1.1       anton    1569: ""The number of lines and columns in the terminal. These numbers may change
                   1570: with the window size.""
                   1571: /* we could block SIGWINCH here to get a consistent size, but I don't
                   1572:  think this is necessary or always beneficial */
                   1573: urows=rows;
                   1574: ucols=cols;
                   1575: 
1.47      anton    1576: flush-icache   ( c_addr u -- ) gforth  flush_icache
1.1       anton    1577: ""Make sure that the instruction cache of the processor (if there is
1.29      crook    1578: one) does not contain stale data at @i{c-addr} and @i{u} bytes
1.1       anton    1579: afterwards. @code{END-CODE} performs a @code{flush-icache}
                   1580: automatically. Caveat: @code{flush-icache} might not work on your
                   1581: installation; this is usually the case if direct threading is not
                   1582: supported on your machine (take a look at your @file{machine.h}) and
                   1583: your machine has a separate instruction cache. In such cases,
                   1584: @code{flush-icache} does nothing instead of flushing the instruction
                   1585: cache.""
                   1586: FLUSH_ICACHE(c_addr,u);
                   1587: 
1.47      anton    1588: (bye)  ( n -- )        gforth  paren_bye
1.77      anton    1589: SUPER_END;
1.1       anton    1590: return (Label *)n;
                   1591: 
1.125     anton    1592: (system)       ( c_addr u -- wretval wior )    gforth  paren_system
1.20      pazsan   1593: #ifndef MSDOS
1.1       anton    1594: int old_tp=terminal_prepped;
                   1595: deprep_terminal();
1.20      pazsan   1596: #endif
1.1       anton    1597: wretval=system(cstr(c_addr,u,1)); /* ~ expansion on first part of string? */
                   1598: wior = IOR(wretval==-1 || (wretval==127 && errno != 0));
1.20      pazsan   1599: #ifndef MSDOS
1.1       anton    1600: if (old_tp)
                   1601:   prep_terminal();
1.20      pazsan   1602: #endif
1.1       anton    1603: 
1.47      anton    1604: getenv ( c_addr1 u1 -- c_addr2 u2 )    gforth
1.29      crook    1605: ""The string @i{c-addr1 u1} specifies an environment variable. The string @i{c-addr2 u2}
1.24      crook    1606: is the host operating system's expansion of that environment variable. If the
1.29      crook    1607: environment variable does not exist, @i{c-addr2 u2} specifies a string 0 characters
1.24      crook    1608: in length.""
1.46      pazsan   1609: /* close ' to keep fontify happy */
1.1       anton    1610: c_addr2 = getenv(cstr(c_addr1,u1,1));
                   1611: u2 = (c_addr2 == NULL ? 0 : strlen(c_addr2));
                   1612: 
1.56      anton    1613: open-pipe      ( c_addr u wfam -- wfileid wior )       gforth  open_pipe
1.84      pazsan   1614: wfileid=(Cell)popen(cstr(c_addr,u,1),pfileattr[wfam]); /* ~ expansion of 1st arg? */
1.1       anton    1615: wior = IOR(wfileid==0); /* !! the man page says that errno is not set reliably */
                   1616: 
1.47      anton    1617: close-pipe     ( wfileid -- wretval wior )             gforth  close_pipe
1.1       anton    1618: wretval = pclose((FILE *)wfileid);
                   1619: wior = IOR(wretval==-1);
                   1620: 
1.47      anton    1621: time&date      ( -- nsec nmin nhour nday nmonth nyear )        facility-ext    time_and_date
1.44      crook    1622: ""Report the current time of day. Seconds, minutes and hours are numbered from 0.
                   1623: Months are numbered from 1.""
1.127     anton    1624: #if 1
                   1625: time_t now;
                   1626: struct tm *ltime;
                   1627: time(&now);
                   1628: ltime=localtime(&now);
                   1629: #else
1.1       anton    1630: struct timeval time1;
                   1631: struct timezone zone1;
                   1632: struct tm *ltime;
                   1633: gettimeofday(&time1,&zone1);
1.51      anton    1634: /* !! Single Unix specification: 
                   1635:    If tzp is not a null pointer, the behaviour is unspecified. */
1.1       anton    1636: ltime=localtime((time_t *)&time1.tv_sec);
1.127     anton    1637: #endif
1.1       anton    1638: nyear =ltime->tm_year+1900;
                   1639: nmonth=ltime->tm_mon+1;
                   1640: nday  =ltime->tm_mday;
                   1641: nhour =ltime->tm_hour;
                   1642: nmin  =ltime->tm_min;
                   1643: nsec  =ltime->tm_sec;
                   1644: 
1.47      anton    1645: ms     ( n -- )        facility-ext
1.44      crook    1646: ""Wait at least @i{n} milli-second.""
1.1       anton    1647: struct timeval timeout;
                   1648: timeout.tv_sec=n/1000;
                   1649: timeout.tv_usec=1000*(n%1000);
                   1650: (void)select(0,0,0,0,&timeout);
                   1651: 
1.47      anton    1652: allocate       ( u -- a_addr wior )    memory
1.29      crook    1653: ""Allocate @i{u} address units of contiguous data space. The initial
1.27      crook    1654: contents of the data space is undefined. If the allocation is successful,
1.29      crook    1655: @i{a-addr} is the start address of the allocated region and @i{wior}
                   1656: is 0. If the allocation fails, @i{a-addr} is undefined and @i{wior}
1.52      anton    1657: is a non-zero I/O result code.""
1.1       anton    1658: a_addr = (Cell *)malloc(u?u:1);
                   1659: wior = IOR(a_addr==NULL);
                   1660: 
1.47      anton    1661: free   ( a_addr -- wior )              memory
1.29      crook    1662: ""Return the region of data space starting at @i{a-addr} to the system.
1.52      anton    1663: The region must originally have been obtained using @code{allocate} or
1.29      crook    1664: @code{resize}. If the operational is successful, @i{wior} is 0.
1.52      anton    1665: If the operation fails, @i{wior} is a non-zero I/O result code.""
1.1       anton    1666: free(a_addr);
                   1667: wior = 0;
                   1668: 
1.47      anton    1669: resize ( a_addr1 u -- a_addr2 wior )   memory
1.26      crook    1670: ""Change the size of the allocated area at @i{a-addr1} to @i{u}
1.1       anton    1671: address units, possibly moving the contents to a different
1.27      crook    1672: area. @i{a-addr2} is the address of the resulting area.
1.52      anton    1673: If the operation is successful, @i{wior} is 0.
                   1674: If the operation fails, @i{wior} is a non-zero
1.29      crook    1675: I/O result code. If @i{a-addr1} is 0, Gforth's (but not the Standard)
1.27      crook    1676: @code{resize} @code{allocate}s @i{u} address units.""
1.1       anton    1677: /* the following check is not necessary on most OSs, but it is needed
                   1678:    on SunOS 4.1.2. */
1.46      pazsan   1679: /* close ' to keep fontify happy */
1.1       anton    1680: if (a_addr1==NULL)
                   1681:   a_addr2 = (Cell *)malloc(u);
                   1682: else
                   1683:   a_addr2 = (Cell *)realloc(a_addr1, u);
                   1684: wior = IOR(a_addr2==NULL);     /* !! Define a return code */
                   1685: 
1.47      anton    1686: strerror       ( n -- c_addr u )       gforth
1.1       anton    1687: c_addr = strerror(n);
                   1688: u = strlen(c_addr);
                   1689: 
1.47      anton    1690: strsignal      ( n -- c_addr u )       gforth
1.133     anton    1691: c_addr = (Address)strsignal(n);
1.1       anton    1692: u = strlen(c_addr);
                   1693: 
1.47      anton    1694: call-c ( w -- )        gforth  call_c
1.1       anton    1695: ""Call the C function pointed to by @i{w}. The C function has to
                   1696: access the stack itself. The stack pointers are exported in the global
                   1697: variables @code{SP} and @code{FP}.""
                   1698: /* This is a first attempt at support for calls to C. This may change in
                   1699:    the future */
1.64      anton    1700: IF_fpTOS(fp[0]=fpTOS);
1.1       anton    1701: FP=fp;
                   1702: SP=sp;
                   1703: ((void (*)())w)();
                   1704: sp=SP;
                   1705: fp=FP;
1.64      anton    1706: IF_spTOS(spTOS=sp[0]);
                   1707: IF_fpTOS(fpTOS=fp[0]);
1.1       anton    1708: 
1.15      pazsan   1709: \+
                   1710: \+file
1.1       anton    1711: 
1.47      anton    1712: close-file     ( wfileid -- wior )             file    close_file
1.1       anton    1713: wior = IOR(fclose((FILE *)wfileid)==EOF);
                   1714: 
1.56      anton    1715: open-file      ( c_addr u wfam -- wfileid wior )       file    open_file
                   1716: wfileid = (Cell)fopen(tilde_cstr(c_addr, u, 1), fileattr[wfam]);
1.22      crook    1717: wior =  IOR(wfileid == 0);
1.1       anton    1718: 
1.56      anton    1719: create-file    ( c_addr u wfam -- wfileid wior )       file    create_file
1.1       anton    1720: Cell   fd;
1.56      anton    1721: fd = open(tilde_cstr(c_addr, u, 1), O_CREAT|O_TRUNC|ufileattr[wfam], 0666);
1.1       anton    1722: if (fd != -1) {
1.56      anton    1723:   wfileid = (Cell)fdopen(fd, fileattr[wfam]);
1.22      crook    1724:   wior = IOR(wfileid == 0);
1.1       anton    1725: } else {
1.22      crook    1726:   wfileid = 0;
1.1       anton    1727:   wior = IOR(1);
                   1728: }
                   1729: 
1.47      anton    1730: delete-file    ( c_addr u -- wior )            file    delete_file
1.1       anton    1731: wior = IOR(unlink(tilde_cstr(c_addr, u, 1))==-1);
                   1732: 
1.47      anton    1733: rename-file    ( c_addr1 u1 c_addr2 u2 -- wior )       file-ext        rename_file
1.29      crook    1734: ""Rename file @i{c_addr1 u1} to new name @i{c_addr2 u2}""
1.125     anton    1735: wior = rename_file(c_addr1, u1, c_addr2, u2);
1.1       anton    1736: 
1.47      anton    1737: file-position  ( wfileid -- ud wior )  file    file_position
1.1       anton    1738: /* !! use tell and lseek? */
1.108     anton    1739: ud = OFF2UD(ftello((FILE *)wfileid));
                   1740: wior = IOR(UD2OFF(ud)==-1);
1.1       anton    1741: 
1.47      anton    1742: reposition-file        ( ud wfileid -- wior )  file    reposition_file
1.108     anton    1743: wior = IOR(fseeko((FILE *)wfileid, UD2OFF(ud), SEEK_SET)==-1);
1.1       anton    1744: 
1.47      anton    1745: file-size      ( wfileid -- ud wior )  file    file_size
1.1       anton    1746: struct stat buf;
                   1747: wior = IOR(fstat(fileno((FILE *)wfileid), &buf)==-1);
1.108     anton    1748: ud = OFF2UD(buf.st_size);
1.1       anton    1749: 
1.47      anton    1750: resize-file    ( ud wfileid -- wior )  file    resize_file
1.108     anton    1751: wior = IOR(ftruncate(fileno((FILE *)wfileid), UD2OFF(ud))==-1);
1.1       anton    1752: 
1.47      anton    1753: read-file      ( c_addr u1 wfileid -- u2 wior )        file    read_file
1.1       anton    1754: /* !! fread does not guarantee enough */
                   1755: u2 = fread(c_addr, sizeof(Char), u1, (FILE *)wfileid);
                   1756: wior = FILEIO(u2<u1 && ferror((FILE *)wfileid));
                   1757: /* !! is the value of ferror errno-compatible? */
                   1758: if (wior)
                   1759:   clearerr((FILE *)wfileid);
                   1760: 
1.125     anton    1761: (read-line)    ( c_addr u1 wfileid -- u2 flag u3 wior ) file   paren_read_line
                   1762: struct Cellquad r = read_line(c_addr, u1, wfileid);
                   1763: u2   = r.n1;
                   1764: flag = r.n2;
                   1765: u3   = r.n3;
                   1766: wior = r.n4;
1.1       anton    1767: 
1.15      pazsan   1768: \+
1.1       anton    1769: 
1.47      anton    1770: write-file     ( c_addr u1 wfileid -- wior )   file    write_file
1.1       anton    1771: /* !! fwrite does not guarantee enough */
1.39      pazsan   1772: #ifdef HAS_FILE
1.1       anton    1773: {
                   1774:   UCell u2 = fwrite(c_addr, sizeof(Char), u1, (FILE *)wfileid);
                   1775:   wior = FILEIO(u2<u1 && ferror((FILE *)wfileid));
                   1776:   if (wior)
                   1777:     clearerr((FILE *)wfileid);
                   1778: }
1.39      pazsan   1779: #else
                   1780: TYPE(c_addr, u1);
                   1781: #endif
1.17      pazsan   1782: 
1.47      anton    1783: emit-file      ( c wfileid -- wior )   gforth  emit_file
1.17      pazsan   1784: #ifdef HAS_FILE
1.1       anton    1785: wior = FILEIO(putc(c, (FILE *)wfileid)==EOF);
                   1786: if (wior)
                   1787:   clearerr((FILE *)wfileid);
1.17      pazsan   1788: #else
1.36      pazsan   1789: PUTC(c);
1.17      pazsan   1790: #endif
1.1       anton    1791: 
1.15      pazsan   1792: \+file
1.1       anton    1793: 
1.47      anton    1794: flush-file     ( wfileid -- wior )             file-ext        flush_file
1.1       anton    1795: wior = IOR(fflush((FILE *) wfileid)==EOF);
                   1796: 
1.56      anton    1797: file-status    ( c_addr u -- wfam wior )       file-ext        file_status
1.125     anton    1798: struct Cellpair r = file_status(c_addr, u);
                   1799: wfam = r.n1;
                   1800: wior = r.n2;
1.1       anton    1801: 
1.112     pazsan   1802: file-eof?      ( wfileid -- flag )     gforth  file_eof_query
                   1803: flag = FLAG(feof((FILE *) wfileid));
1.1       anton    1804: 
1.112     pazsan   1805: open-dir       ( c_addr u -- wdirid wior )     gforth  open_dir
                   1806: ""Open the directory specified by @i{c-addr, u}
                   1807: and return @i{dir-id} for futher access to it.""
                   1808: wdirid = (Cell)opendir(tilde_cstr(c_addr, u, 1));
                   1809: wior =  IOR(wdirid == 0);
                   1810: 
                   1811: read-dir       ( c_addr u1 wdirid -- u2 flag wior )    gforth  read_dir
                   1812: ""Attempt to read the next entry from the directory specified
                   1813: by @i{dir-id} to the buffer of length @i{u1} at address @i{c-addr}. 
                   1814: If the attempt fails because there is no more entries,
                   1815: @i{ior}=0, @i{flag}=0, @i{u2}=0, and the buffer is unmodified.
                   1816: If the attempt to read the next entry fails because of any other reason, 
                   1817: return @i{ior}<>0.
                   1818: If the attempt succeeds, store file name to the buffer at @i{c-addr}
                   1819: and return @i{ior}=0, @i{flag}=true and @i{u2} equal to the size of the file name.
                   1820: If the length of the file name is greater than @i{u1}, 
                   1821: store first @i{u1} characters from file name into the buffer and
                   1822: indicate "name too long" with @i{ior}, @i{flag}=true, and @i{u2}=@i{u1}.""
                   1823: struct dirent * dent;
                   1824: dent = readdir((DIR *)wdirid);
                   1825: wior = 0;
                   1826: flag = -1;
                   1827: if(dent == NULL) {
                   1828:   u2 = 0;
                   1829:   flag = 0;
                   1830: } else {
                   1831:   u2 = strlen(dent->d_name);
                   1832:   if(u2 > u1) {
                   1833:     u2 = u1;
                   1834:     wior = -512-ENAMETOOLONG;
                   1835:   }
                   1836:   memmove(c_addr, dent->d_name, u2);
                   1837: }
                   1838: 
                   1839: close-dir      ( wdirid -- wior )      gforth  close_dir
                   1840: ""Close the directory specified by @i{dir-id}.""
                   1841: wior = IOR(closedir((DIR *)wdirid));
                   1842: 
                   1843: filename-match ( c_addr1 u1 c_addr2 u2 -- flag )       gforth  match_file
                   1844: char * string = cstr(c_addr1, u1, 1);
                   1845: char * pattern = cstr(c_addr2, u2, 0);
                   1846: flag = FLAG(!fnmatch(pattern, string, 0));
                   1847: 
                   1848: \+
                   1849: 
                   1850: newline        ( -- c_addr u ) gforth
                   1851: ""String containing the newline sequence of the host OS""
                   1852: char newline[] = {
1.115     anton    1853: #if DIRSEP=='/'
                   1854: /* Unix */
1.112     pazsan   1855: '\n'
                   1856: #else
1.115     anton    1857: /* DOS, Win, OS/2 */
1.112     pazsan   1858: '\r','\n'
                   1859: #endif
                   1860: };
                   1861: c_addr=newline;
                   1862: u=sizeof(newline);
                   1863: :
                   1864:  "newline count ;
                   1865: Create "newline e? crlf [IF] 2 c, $0D c, [ELSE] 1 c, [THEN] $0A c,
                   1866: 
                   1867: \+os
                   1868: 
                   1869: utime  ( -- dtime )    gforth
                   1870: ""Report the current time in microseconds since some epoch.""
                   1871: struct timeval time1;
                   1872: gettimeofday(&time1,NULL);
                   1873: dtime = timeval2us(&time1);
                   1874: 
                   1875: cputime ( -- duser dsystem ) gforth
                   1876: ""duser and dsystem are the respective user- and system-level CPU
                   1877: times used since the start of the Forth system (excluding child
                   1878: processes), in microseconds (the granularity may be much larger,
                   1879: however).  On platforms without the getrusage call, it reports elapsed
                   1880: time (since some epoch) for duser and 0 for dsystem.""
                   1881: #ifdef HAVE_GETRUSAGE
                   1882: struct rusage usage;
                   1883: getrusage(RUSAGE_SELF, &usage);
                   1884: duser = timeval2us(&usage.ru_utime);
                   1885: dsystem = timeval2us(&usage.ru_stime);
                   1886: #else
                   1887: struct timeval time1;
                   1888: gettimeofday(&time1,NULL);
                   1889: duser = timeval2us(&time1);
                   1890: #ifndef BUGGY_LONG_LONG
                   1891: dsystem = (DCell)0;
                   1892: #else
                   1893: dsystem=(DCell){0,0};
                   1894: #endif
                   1895: #endif
                   1896: 
                   1897: \+
                   1898: 
                   1899: \+floating
                   1900: 
                   1901: \g floating
1.83      pazsan   1902: 
1.1       anton    1903: comparisons(f, r1 r2, f_, r1, r2, gforth, gforth, float, gforth)
                   1904: comparisons(f0, r, f_zero_, r, 0., float, gforth, float, gforth)
                   1905: 
1.47      anton    1906: d>f    ( d -- r )              float   d_to_f
1.1       anton    1907: #ifdef BUGGY_LONG_LONG
                   1908: extern double ldexp(double x, int exp);
1.113     anton    1909: if (d.hi<0) {
                   1910:   DCell d2=dnegate(d);
                   1911:   r = -(ldexp((Float)d2.hi,CELL_BITS) + (Float)d2.lo);
                   1912: } else
                   1913:   r = ldexp((Float)d.hi,CELL_BITS) + (Float)d.lo;
1.1       anton    1914: #else
                   1915: r = d;
                   1916: #endif
                   1917: 
1.47      anton    1918: f>d    ( r -- d )              float   f_to_d
1.100     pazsan   1919: extern DCell double2ll(Float r);
                   1920: d = double2ll(r);
1.1       anton    1921: 
1.47      anton    1922: f!     ( r f_addr -- ) float   f_store
1.52      anton    1923: ""Store @i{r} into the float at address @i{f-addr}.""
1.1       anton    1924: *f_addr = r;
                   1925: 
1.47      anton    1926: f@     ( f_addr -- r ) float   f_fetch
1.52      anton    1927: ""@i{r} is the float at address @i{f-addr}.""
1.1       anton    1928: r = *f_addr;
                   1929: 
1.47      anton    1930: df@    ( df_addr -- r )        float-ext       d_f_fetch
1.52      anton    1931: ""Fetch the double-precision IEEE floating-point value @i{r} from the address @i{df-addr}.""
1.1       anton    1932: #ifdef IEEE_FP
                   1933: r = *df_addr;
                   1934: #else
                   1935: !! df@
                   1936: #endif
                   1937: 
1.47      anton    1938: df!    ( r df_addr -- )        float-ext       d_f_store
1.52      anton    1939: ""Store @i{r} as double-precision IEEE floating-point value to the
                   1940: address @i{df-addr}.""
1.1       anton    1941: #ifdef IEEE_FP
                   1942: *df_addr = r;
                   1943: #else
                   1944: !! df!
                   1945: #endif
                   1946: 
1.47      anton    1947: sf@    ( sf_addr -- r )        float-ext       s_f_fetch
1.52      anton    1948: ""Fetch the single-precision IEEE floating-point value @i{r} from the address @i{sf-addr}.""
1.1       anton    1949: #ifdef IEEE_FP
                   1950: r = *sf_addr;
                   1951: #else
                   1952: !! sf@
                   1953: #endif
                   1954: 
1.47      anton    1955: sf!    ( r sf_addr -- )        float-ext       s_f_store
1.52      anton    1956: ""Store @i{r} as single-precision IEEE floating-point value to the
                   1957: address @i{sf-addr}.""
1.1       anton    1958: #ifdef IEEE_FP
                   1959: *sf_addr = r;
                   1960: #else
                   1961: !! sf!
                   1962: #endif
                   1963: 
1.47      anton    1964: f+     ( r1 r2 -- r3 ) float   f_plus
1.1       anton    1965: r3 = r1+r2;
                   1966: 
1.47      anton    1967: f-     ( r1 r2 -- r3 ) float   f_minus
1.1       anton    1968: r3 = r1-r2;
                   1969: 
1.47      anton    1970: f*     ( r1 r2 -- r3 ) float   f_star
1.1       anton    1971: r3 = r1*r2;
                   1972: 
1.47      anton    1973: f/     ( r1 r2 -- r3 ) float   f_slash
1.1       anton    1974: r3 = r1/r2;
                   1975: 
1.47      anton    1976: f**    ( r1 r2 -- r3 ) float-ext       f_star_star
1.26      crook    1977: ""@i{r3} is @i{r1} raised to the @i{r2}th power.""
1.1       anton    1978: r3 = pow(r1,r2);
                   1979: 
1.47      anton    1980: fnegate        ( r1 -- r2 )    float   f_negate
1.1       anton    1981: r2 = - r1;
                   1982: 
1.47      anton    1983: fdrop  ( r -- )                float   f_drop
1.1       anton    1984: 
1.47      anton    1985: fdup   ( r -- r r )    float   f_dupe
1.1       anton    1986: 
1.47      anton    1987: fswap  ( r1 r2 -- r2 r1 )      float   f_swap
1.1       anton    1988: 
1.47      anton    1989: fover  ( r1 r2 -- r1 r2 r1 )   float   f_over
1.1       anton    1990: 
1.47      anton    1991: frot   ( r1 r2 r3 -- r2 r3 r1 )        float   f_rote
1.1       anton    1992: 
1.47      anton    1993: fnip   ( r1 r2 -- r2 ) gforth  f_nip
1.1       anton    1994: 
1.47      anton    1995: ftuck  ( r1 r2 -- r2 r1 r2 )   gforth  f_tuck
1.1       anton    1996: 
1.47      anton    1997: float+ ( f_addr1 -- f_addr2 )  float   float_plus
1.52      anton    1998: ""@code{1 floats +}.""
1.1       anton    1999: f_addr2 = f_addr1+1;
                   2000: 
1.47      anton    2001: floats ( n1 -- n2 )    float
1.52      anton    2002: ""@i{n2} is the number of address units of @i{n1} floats.""
1.1       anton    2003: n2 = n1*sizeof(Float);
                   2004: 
1.47      anton    2005: floor  ( r1 -- r2 )    float
1.26      crook    2006: ""Round towards the next smaller integral value, i.e., round toward negative infinity.""
1.1       anton    2007: /* !! unclear wording */
                   2008: r2 = floor(r1);
                   2009: 
1.105     anton    2010: fround ( r1 -- r2 )    gforth  f_round
                   2011: ""Round to the nearest integral value.""
1.1       anton    2012: r2 = rint(r1);
                   2013: 
1.47      anton    2014: fmax   ( r1 r2 -- r3 ) float   f_max
1.1       anton    2015: if (r1<r2)
                   2016:   r3 = r2;
                   2017: else
                   2018:   r3 = r1;
                   2019: 
1.47      anton    2020: fmin   ( r1 r2 -- r3 ) float   f_min
1.1       anton    2021: if (r1<r2)
                   2022:   r3 = r1;
                   2023: else
                   2024:   r3 = r2;
                   2025: 
1.47      anton    2026: represent      ( r c_addr u -- n f1 f2 )       float
1.1       anton    2027: char *sig;
1.122     anton    2028: size_t siglen;
1.1       anton    2029: int flag;
                   2030: int decpt;
                   2031: sig=ecvt(r, u, &decpt, &flag);
1.122     anton    2032: n=(r==0. ? 1 : decpt);
1.1       anton    2033: f1=FLAG(flag!=0);
1.21      anton    2034: f2=FLAG(isdigit((unsigned)(sig[0]))!=0);
1.122     anton    2035: siglen=strlen(sig);
1.124     anton    2036: if (siglen>u) /* happens in glibc-2.1.3 if 999.. is rounded up */
                   2037:   siglen=u;
1.122     anton    2038: memcpy(c_addr,sig,siglen);
1.123     anton    2039: memset(c_addr+siglen,f2?'0':' ',u-siglen);
1.1       anton    2040: 
1.47      anton    2041: >float ( c_addr u -- flag )    float   to_float
1.56      anton    2042: ""Actual stack effect: ( c_addr u -- r t | f ).  Attempt to convert the
                   2043: character string @i{c-addr u} to internal floating-point
                   2044: representation. If the string represents a valid floating-point number
                   2045: @i{r} is placed on the floating-point stack and @i{flag} is
                   2046: true. Otherwise, @i{flag} is false. A string of blanks is a special
                   2047: case and represents the floating-point number 0.""
1.1       anton    2048: Float r;
1.125     anton    2049: flag = to_float(c_addr, u, &r);
                   2050: if (flag) {
                   2051:   IF_fpTOS(fp[0] = fpTOS);
                   2052:   fp += -1;
                   2053:   fpTOS = r;
1.1       anton    2054: }
                   2055: 
1.47      anton    2056: fabs   ( r1 -- r2 )    float-ext       f_abs
1.1       anton    2057: r2 = fabs(r1);
                   2058: 
1.47      anton    2059: facos  ( r1 -- r2 )    float-ext       f_a_cos
1.1       anton    2060: r2 = acos(r1);
                   2061: 
1.47      anton    2062: fasin  ( r1 -- r2 )    float-ext       f_a_sine
1.1       anton    2063: r2 = asin(r1);
                   2064: 
1.47      anton    2065: fatan  ( r1 -- r2 )    float-ext       f_a_tan
1.1       anton    2066: r2 = atan(r1);
                   2067: 
1.47      anton    2068: fatan2 ( r1 r2 -- r3 ) float-ext       f_a_tan_two
1.26      crook    2069: ""@i{r1/r2}=tan(@i{r3}). ANS Forth does not require, but probably
1.1       anton    2070: intends this to be the inverse of @code{fsincos}. In gforth it is.""
                   2071: r3 = atan2(r1,r2);
                   2072: 
1.47      anton    2073: fcos   ( r1 -- r2 )    float-ext       f_cos
1.1       anton    2074: r2 = cos(r1);
                   2075: 
1.47      anton    2076: fexp   ( r1 -- r2 )    float-ext       f_e_x_p
1.1       anton    2077: r2 = exp(r1);
                   2078: 
1.47      anton    2079: fexpm1 ( r1 -- r2 )    float-ext       f_e_x_p_m_one
1.1       anton    2080: ""@i{r2}=@i{e}**@i{r1}@minus{}1""
                   2081: #ifdef HAVE_EXPM1
1.3       pazsan   2082: extern double
                   2083: #ifdef NeXT
                   2084:               const
                   2085: #endif
                   2086:                     expm1(double);
1.1       anton    2087: r2 = expm1(r1);
                   2088: #else
                   2089: r2 = exp(r1)-1.;
                   2090: #endif
                   2091: 
1.47      anton    2092: fln    ( r1 -- r2 )    float-ext       f_l_n
1.1       anton    2093: r2 = log(r1);
                   2094: 
1.47      anton    2095: flnp1  ( r1 -- r2 )    float-ext       f_l_n_p_one
1.1       anton    2096: ""@i{r2}=ln(@i{r1}+1)""
                   2097: #ifdef HAVE_LOG1P
1.3       pazsan   2098: extern double
                   2099: #ifdef NeXT
                   2100:               const
                   2101: #endif
                   2102:                     log1p(double);
1.1       anton    2103: r2 = log1p(r1);
                   2104: #else
                   2105: r2 = log(r1+1.);
                   2106: #endif
                   2107: 
1.47      anton    2108: flog   ( r1 -- r2 )    float-ext       f_log
1.26      crook    2109: ""The decimal logarithm.""
1.1       anton    2110: r2 = log10(r1);
                   2111: 
1.47      anton    2112: falog  ( r1 -- r2 )    float-ext       f_a_log
1.1       anton    2113: ""@i{r2}=10**@i{r1}""
                   2114: extern double pow10(double);
                   2115: r2 = pow10(r1);
                   2116: 
1.47      anton    2117: fsin   ( r1 -- r2 )    float-ext       f_sine
1.1       anton    2118: r2 = sin(r1);
                   2119: 
1.47      anton    2120: fsincos        ( r1 -- r2 r3 ) float-ext       f_sine_cos
1.1       anton    2121: ""@i{r2}=sin(@i{r1}), @i{r3}=cos(@i{r1})""
                   2122: r2 = sin(r1);
                   2123: r3 = cos(r1);
                   2124: 
1.47      anton    2125: fsqrt  ( r1 -- r2 )    float-ext       f_square_root
1.1       anton    2126: r2 = sqrt(r1);
                   2127: 
1.47      anton    2128: ftan   ( r1 -- r2 )    float-ext       f_tan
1.1       anton    2129: r2 = tan(r1);
                   2130: :
                   2131:  fsincos f/ ;
                   2132: 
1.47      anton    2133: fsinh  ( r1 -- r2 )    float-ext       f_cinch
1.1       anton    2134: r2 = sinh(r1);
                   2135: :
                   2136:  fexpm1 fdup fdup 1. d>f f+ f/ f+ f2/ ;
                   2137: 
1.47      anton    2138: fcosh  ( r1 -- r2 )    float-ext       f_cosh
1.1       anton    2139: r2 = cosh(r1);
                   2140: :
                   2141:  fexp fdup 1/f f+ f2/ ;
                   2142: 
1.47      anton    2143: ftanh  ( r1 -- r2 )    float-ext       f_tan_h
1.1       anton    2144: r2 = tanh(r1);
                   2145: :
                   2146:  f2* fexpm1 fdup 2. d>f f+ f/ ;
                   2147: 
1.47      anton    2148: fasinh ( r1 -- r2 )    float-ext       f_a_cinch
1.1       anton    2149: r2 = asinh(r1);
                   2150: :
                   2151:  fdup fdup f* 1. d>f f+ fsqrt f/ fatanh ;
                   2152: 
1.47      anton    2153: facosh ( r1 -- r2 )    float-ext       f_a_cosh
1.1       anton    2154: r2 = acosh(r1);
                   2155: :
                   2156:  fdup fdup f* 1. d>f f- fsqrt f+ fln ;
                   2157: 
1.47      anton    2158: fatanh ( r1 -- r2 )    float-ext       f_a_tan_h
1.1       anton    2159: r2 = atanh(r1);
                   2160: :
                   2161:  fdup f0< >r fabs 1. d>f fover f- f/  f2* flnp1 f2/
                   2162:  r> IF  fnegate  THEN ;
                   2163: 
1.47      anton    2164: sfloats        ( n1 -- n2 )    float-ext       s_floats
1.52      anton    2165: ""@i{n2} is the number of address units of @i{n1}
1.29      crook    2166: single-precision IEEE floating-point numbers.""
1.1       anton    2167: n2 = n1*sizeof(SFloat);
                   2168: 
1.47      anton    2169: dfloats        ( n1 -- n2 )    float-ext       d_floats
1.52      anton    2170: ""@i{n2} is the number of address units of @i{n1}
1.29      crook    2171: double-precision IEEE floating-point numbers.""
1.1       anton    2172: n2 = n1*sizeof(DFloat);
                   2173: 
1.47      anton    2174: sfaligned      ( c_addr -- sf_addr )   float-ext       s_f_aligned
1.52      anton    2175: ""@i{sf-addr} is the first single-float-aligned address greater
1.29      crook    2176: than or equal to @i{c-addr}.""
1.1       anton    2177: sf_addr = (SFloat *)((((Cell)c_addr)+(sizeof(SFloat)-1))&(-sizeof(SFloat)));
                   2178: :
                   2179:  [ 1 sfloats 1- ] Literal + [ -1 sfloats ] Literal and ;
                   2180: 
1.47      anton    2181: dfaligned      ( c_addr -- df_addr )   float-ext       d_f_aligned
1.52      anton    2182: ""@i{df-addr} is the first double-float-aligned address greater
1.29      crook    2183: than or equal to @i{c-addr}.""
1.1       anton    2184: df_addr = (DFloat *)((((Cell)c_addr)+(sizeof(DFloat)-1))&(-sizeof(DFloat)));
                   2185: :
                   2186:  [ 1 dfloats 1- ] Literal + [ -1 dfloats ] Literal and ;
                   2187: 
1.112     pazsan   2188: v*     ( f_addr1 nstride1 f_addr2 nstride2 ucount -- r ) gforth v_star
                   2189: ""dot-product: r=v1*v2.  The first element of v1 is at f_addr1, the
                   2190: next at f_addr1+nstride1 and so on (similar for v2). Both vectors have
                   2191: ucount elements.""
1.125     anton    2192: r = v_star(f_addr1, nstride1, f_addr2, nstride2, ucount);
1.112     pazsan   2193: :
                   2194:  >r swap 2swap swap 0e r> 0 ?DO
                   2195:      dup f@ over + 2swap dup f@ f* f+ over + 2swap
                   2196:  LOOP 2drop 2drop ; 
                   2197: 
                   2198: faxpy  ( ra f_x nstridex f_y nstridey ucount -- )      gforth
                   2199: ""vy=ra*vx+vy""
1.125     anton    2200: faxpy(ra, f_x, nstridex, f_y, nstridey, ucount);
1.112     pazsan   2201: :
                   2202:  >r swap 2swap swap r> 0 ?DO
                   2203:      fdup dup f@ f* over + 2swap dup f@ f+ dup f! over + 2swap
                   2204:  LOOP 2drop 2drop fdrop ;
                   2205: 
                   2206: \+
                   2207: 
1.1       anton    2208: \ The following words access machine/OS/installation-dependent
                   2209: \   Gforth internals
                   2210: \ !! how about environmental queries DIRECT-THREADED,
                   2211: \   INDIRECT-THREADED, TOS-CACHED, FTOS-CACHED, CODEFIELD-DOES */
                   2212: 
                   2213: \ local variable implementation primitives
1.112     pazsan   2214: 
1.15      pazsan   2215: \+glocals
1.1       anton    2216: 
1.110     pazsan   2217: \g locals
                   2218: 
1.68      anton    2219: @local#        ( #noffset -- w )       gforth  fetch_local_number
                   2220: w = *(Cell *)(lp+noffset);
1.1       anton    2221: 
1.47      anton    2222: @local0        ( -- w )        new     fetch_local_zero
1.112     pazsan   2223: w = ((Cell *)lp)[0];
1.1       anton    2224: 
1.47      anton    2225: @local1        ( -- w )        new     fetch_local_four
1.112     pazsan   2226: w = ((Cell *)lp)[1];
1.1       anton    2227: 
1.47      anton    2228: @local2        ( -- w )        new     fetch_local_eight
1.112     pazsan   2229: w = ((Cell *)lp)[2];
1.1       anton    2230: 
1.47      anton    2231: @local3        ( -- w )        new     fetch_local_twelve
1.112     pazsan   2232: w = ((Cell *)lp)[3];
1.1       anton    2233: 
1.15      pazsan   2234: \+floating
1.1       anton    2235: 
1.68      anton    2236: f@local#       ( #noffset -- r )       gforth  f_fetch_local_number
                   2237: r = *(Float *)(lp+noffset);
1.1       anton    2238: 
1.47      anton    2239: f@local0       ( -- r )        new     f_fetch_local_zero
1.112     pazsan   2240: r = ((Float *)lp)[0];
1.1       anton    2241: 
1.47      anton    2242: f@local1       ( -- r )        new     f_fetch_local_eight
1.112     pazsan   2243: r = ((Float *)lp)[1];
1.1       anton    2244: 
1.15      pazsan   2245: \+
1.1       anton    2246: 
1.68      anton    2247: laddr# ( #noffset -- c_addr )  gforth  laddr_number
1.1       anton    2248: /* this can also be used to implement lp@ */
1.68      anton    2249: c_addr = (Char *)(lp+noffset);
1.1       anton    2250: 
1.68      anton    2251: lp+!#  ( #noffset -- ) gforth  lp_plus_store_number
1.1       anton    2252: ""used with negative immediate values it allocates memory on the
                   2253: local stack, a positive immediate argument drops memory from the local
                   2254: stack""
1.68      anton    2255: lp += noffset;
1.1       anton    2256: 
1.47      anton    2257: lp-    ( -- )  new     minus_four_lp_plus_store
1.1       anton    2258: lp += -sizeof(Cell);
                   2259: 
1.47      anton    2260: lp+    ( -- )  new     eight_lp_plus_store
1.1       anton    2261: lp += sizeof(Float);
                   2262: 
1.47      anton    2263: lp+2   ( -- )  new     sixteen_lp_plus_store
1.1       anton    2264: lp += 2*sizeof(Float);
                   2265: 
1.47      anton    2266: lp!    ( c_addr -- )   gforth  lp_store
1.1       anton    2267: lp = (Address)c_addr;
                   2268: 
1.47      anton    2269: >l     ( w -- )        gforth  to_l
1.1       anton    2270: lp -= sizeof(Cell);
                   2271: *(Cell *)lp = w;
                   2272: 
1.15      pazsan   2273: \+floating
1.1       anton    2274: 
1.47      anton    2275: f>l    ( r -- )        gforth  f_to_l
1.1       anton    2276: lp -= sizeof(Float);
                   2277: *(Float *)lp = r;
                   2278: 
1.47      anton    2279: fpick  ( u -- r )              gforth
1.52      anton    2280: ""Actually the stack effect is @code{ r0 ... ru u -- r0 ... ru r0 }.""
1.11      anton    2281: r = fp[u+1]; /* +1, because update of fp happens before this fragment */
                   2282: :
                   2283:  floats fp@ + f@ ;
                   2284: 
1.15      pazsan   2285: \+
                   2286: \+
1.1       anton    2287: 
1.15      pazsan   2288: \+OS
1.1       anton    2289: 
1.110     pazsan   2290: \g syslib
                   2291: 
1.131     pazsan   2292: open-lib       ( c_addr1 u1 -- u2 )    gforth  open_lib
                   2293: #if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN)
                   2294: #ifndef RTLD_GLOBAL
                   2295: #define RTLD_GLOBAL 0
                   2296: #endif
                   2297: u2=(UCell) dlopen(cstr(c_addr1, u1, 1), RTLD_GLOBAL | RTLD_LAZY);
                   2298: #else
                   2299: #  ifdef _WIN32
                   2300: u2 = (Cell) GetModuleHandle(cstr(c_addr1, u1, 1));
                   2301: #  else
                   2302: #warning Define open-lib!
                   2303: u2 = 0;
                   2304: #  endif
                   2305: #endif
                   2306: 
                   2307: lib-sym        ( c_addr1 u1 u2 -- u3 ) gforth  lib_sym
                   2308: #if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN)
                   2309: u3 = (UCell) dlsym((void*)u2,cstr(c_addr1, u1, 1));
                   2310: #else
                   2311: #  ifdef _WIN32
                   2312: u3 = (Cell) GetProcAddress((HMODULE)u2, cstr(c_addr1, u1, 1));
                   2313: #  else
                   2314: #warning Define lib-sym!
                   2315: u3 = 0;
                   2316: #  endif
                   2317: #endif
                   2318: 
1.142     pazsan   2319: wcall  ( u -- )        gforth
                   2320: IF_fpTOS(fp[0]=fpTOS);
                   2321: FP=fp;
                   2322: sp=(Cell*)(SYSCALL(Cell*(*)(Cell *, void *))u)(sp, &FP);
                   2323: fp=FP;
                   2324: IF_spTOS(spTOS=sp[0];)
                   2325: IF_fpTOS(fpTOS=fp[0]);
                   2326: 
1.131     pazsan   2327: \+FFCALL
                   2328: 
1.136     pazsan   2329: av-start-void  ( c_addr -- )   gforth  av_start_void
1.131     pazsan   2330: av_start_void(alist, c_addr);
                   2331: 
1.136     pazsan   2332: av-start-int   ( c_addr -- )   gforth  av_start_int
1.131     pazsan   2333: av_start_int(alist, c_addr, &irv);
                   2334: 
1.136     pazsan   2335: av-start-float ( c_addr -- )   gforth  av_start_float
1.131     pazsan   2336: av_start_float(alist, c_addr, &frv);
                   2337: 
1.136     pazsan   2338: av-start-double        ( c_addr -- )   gforth  av_start_double
1.131     pazsan   2339: av_start_double(alist, c_addr, &drv);
                   2340: 
1.136     pazsan   2341: av-start-longlong      ( c_addr -- )   gforth  av_start_longlong
1.131     pazsan   2342: av_start_longlong(alist, c_addr, &llrv);
                   2343: 
1.136     pazsan   2344: av-start-ptr   ( c_addr -- )   gforth  av_start_ptr
1.131     pazsan   2345: av_start_ptr(alist, c_addr, void*, &prv);
                   2346: 
                   2347: av-int  ( w -- )  gforth  av_int
                   2348: av_int(alist, w);
                   2349: 
1.136     pazsan   2350: av-float       ( r -- )        gforth  av_float
1.131     pazsan   2351: av_float(alist, r);
                   2352: 
1.136     pazsan   2353: av-double      ( r -- )        gforth  av_double
1.131     pazsan   2354: av_double(alist, r);
                   2355: 
1.136     pazsan   2356: av-longlong    ( d -- )        gforth  av_longlong
1.151     pazsan   2357: #ifdef BUGGY_LONG_LONG
                   2358: av_longlong(alist, d.lo);
                   2359: #else
1.131     pazsan   2360: av_longlong(alist, d);
1.151     pazsan   2361: #endif
1.131     pazsan   2362: 
1.136     pazsan   2363: av-ptr ( c_addr -- )   gforth  av_ptr
1.131     pazsan   2364: av_ptr(alist, void*, c_addr);
                   2365: 
1.136     pazsan   2366: av-int-r  ( R:w -- )  gforth  av_int_r
                   2367: av_int(alist, w);
                   2368: 
                   2369: av-float-r     ( -- )  gforth  av_float_r
                   2370: float r = *(Float*)lp;
                   2371: lp += sizeof(Float);
                   2372: av_float(alist, r);
                   2373: 
                   2374: av-double-r    ( -- )  gforth  av_double_r
                   2375: double r = *(Float*)lp;
                   2376: lp += sizeof(Float);
                   2377: av_double(alist, r);
                   2378: 
                   2379: av-longlong-r  ( R:d -- )      gforth  av_longlong_r
1.151     pazsan   2380: #ifdef BUGGY_LONG_LONG
                   2381: av_longlong(alist, d.lo);
                   2382: #else
1.136     pazsan   2383: av_longlong(alist, d);
1.151     pazsan   2384: #endif
1.136     pazsan   2385: 
                   2386: av-ptr-r       ( R:c_addr -- ) gforth  av_ptr_r
                   2387: av_ptr(alist, void*, c_addr);
                   2388: 
                   2389: av-call-void   ( -- )  gforth  av_call_void
1.131     pazsan   2390: SAVE_REGS
                   2391: av_call(alist);
                   2392: REST_REGS
                   2393: 
1.136     pazsan   2394: av-call-int    ( -- w )        gforth  av_call_int
1.131     pazsan   2395: SAVE_REGS
                   2396: av_call(alist);
1.134     pazsan   2397: REST_REGS
1.131     pazsan   2398: w = irv;
                   2399: 
1.136     pazsan   2400: av-call-float  ( -- r )        gforth  av_call_float
1.131     pazsan   2401: SAVE_REGS
                   2402: av_call(alist);
                   2403: REST_REGS
                   2404: r = frv;
                   2405: 
1.136     pazsan   2406: av-call-double ( -- r )        gforth  av_call_double
1.131     pazsan   2407: SAVE_REGS
                   2408: av_call(alist);
                   2409: REST_REGS
                   2410: r = drv;
                   2411: 
1.136     pazsan   2412: av-call-longlong       ( -- d )        gforth  av_call_longlong
1.131     pazsan   2413: SAVE_REGS
                   2414: av_call(alist);
                   2415: REST_REGS
1.151     pazsan   2416: #ifdef BUGGY_LONG_LONG
                   2417: d.lo = llrv;
                   2418: d.hi = 0;
1.152   ! pazsan   2419: #else
        !          2420: d = llrv;
1.151     pazsan   2421: #endif
1.131     pazsan   2422: 
1.136     pazsan   2423: av-call-ptr    ( -- c_addr )   gforth  av_call_ptr
1.131     pazsan   2424: SAVE_REGS
                   2425: av_call(alist);
                   2426: REST_REGS
                   2427: c_addr = prv;
                   2428: 
1.135     pazsan   2429: alloc-callback ( a_ip -- c_addr )      gforth  alloc_callback
                   2430: c_addr = (char *)alloc_callback(engine_callback, (Xt *)a_ip);
1.131     pazsan   2431: 
1.135     pazsan   2432: va-start-void  ( -- )  gforth  va_start_void
                   2433: va_start_void(clist);
1.131     pazsan   2434: 
1.135     pazsan   2435: va-start-int   ( -- )  gforth  va_start_int
                   2436: va_start_int(clist);
1.131     pazsan   2437: 
1.135     pazsan   2438: va-start-longlong      ( -- )  gforth  va_start_longlong
                   2439: va_start_longlong(clist);
1.131     pazsan   2440: 
1.135     pazsan   2441: va-start-ptr   ( -- )  gforth  va_start_ptr
                   2442: va_start_ptr(clist, (char *));
1.131     pazsan   2443: 
1.135     pazsan   2444: va-start-float ( -- )  gforth  va_start_float
                   2445: va_start_float(clist);
                   2446: 
                   2447: va-start-double        ( -- )  gforth  va_start_double
                   2448: va_start_double(clist);
                   2449: 
                   2450: va-arg-int     ( -- w )        gforth  va_arg_int
                   2451: w = va_arg_int(clist);
                   2452: 
                   2453: va-arg-longlong        ( -- d )        gforth  va_arg_longlong
1.151     pazsan   2454: #ifdef BUGGY_LONG_LONG
                   2455: d.lo = va_arg_longlong(clist);
                   2456: d.hi = 0;
                   2457: #else
1.135     pazsan   2458: d = va_arg_longlong(clist);
1.151     pazsan   2459: #endif
1.135     pazsan   2460: 
                   2461: va-arg-ptr     ( -- c_addr )   gforth  va_arg_ptr
                   2462: c_addr = (char *)va_arg_ptr(clist,char*);
                   2463: 
                   2464: va-arg-float   ( -- r )        gforth  va_arg_float
                   2465: r = va_arg_float(clist);
                   2466: 
                   2467: va-arg-double  ( -- r )        gforth  va_arg_double
                   2468: r = va_arg_double(clist);
1.131     pazsan   2469: 
                   2470: va-return-void ( -- )  gforth va_return_void
                   2471: va_return_void(clist);
                   2472: return 0;
                   2473: 
                   2474: va-return-int ( w -- ) gforth va_return_int
                   2475: va_return_int(clist, w);
                   2476: return 0;
                   2477: 
                   2478: va-return-ptr ( c_addr -- )    gforth va_return_ptr
                   2479: va_return_ptr(clist, void *, c_addr);
                   2480: return 0;
                   2481: 
                   2482: va-return-longlong ( d -- )    gforth va_return_longlong
1.151     pazsan   2483: #ifdef BUGGY_LONG_LONG
                   2484: va_return_longlong(clist, d.lo);
                   2485: #else
1.131     pazsan   2486: va_return_longlong(clist, d);
1.151     pazsan   2487: #endif
1.131     pazsan   2488: return 0;
                   2489: 
                   2490: va-return-float ( r -- )       gforth va_return_float
                   2491: va_return_float(clist, r);
                   2492: return 0;
                   2493: 
                   2494: va-return-double ( r -- )      gforth va_return_double
                   2495: va_return_double(clist, r);
                   2496: return 0;
                   2497: 
1.142     pazsan   2498: \+
                   2499: 
                   2500: \+OLDCALL
1.131     pazsan   2501: 
1.1       anton    2502: define(`uploop',
                   2503:        `pushdef(`$1', `$2')_uploop(`$1', `$2', `$3', `$4', `$5')`'popdef(`$1')')
                   2504: define(`_uploop',
                   2505:        `ifelse($1, `$3', `$5',
                   2506:               `$4`'define(`$1', incr($1))_uploop(`$1', `$2', `$3', `$4', `$5')')')
                   2507: \ argflist(argnum): Forth argument list
                   2508: define(argflist,
                   2509:        `ifelse($1, 0, `',
                   2510:                `uploop(`_i', 1, $1, `format(`u%d ', _i)', `format(`u%d ', _i)')')')
                   2511: \ argdlist(argnum): declare C's arguments
                   2512: define(argdlist,
                   2513:        `ifelse($1, 0, `',
                   2514:                `uploop(`_i', 1, $1, `Cell, ', `Cell')')')
                   2515: \ argclist(argnum): pass C's arguments
                   2516: define(argclist,
                   2517:        `ifelse($1, 0, `',
                   2518:                `uploop(`_i', 1, $1, `format(`u%d, ', _i)', `format(`u%d', _i)')')')
                   2519: \ icall(argnum)
                   2520: define(icall,
1.47      anton    2521: `icall$1       ( argflist($1)u -- uret )       gforth
1.9       pazsan   2522: uret = (SYSCALL(Cell(*)(argdlist($1)))u)(argclist($1));
1.1       anton    2523: 
                   2524: ')
                   2525: define(fcall,
1.47      anton    2526: `fcall$1       ( argflist($1)u -- rret )       gforth
1.9       pazsan   2527: rret = (SYSCALL(Float(*)(argdlist($1)))u)(argclist($1));
1.1       anton    2528: 
                   2529: ')
                   2530: 
1.46      pazsan   2531: \ close ' to keep fontify happy
1.1       anton    2532: 
                   2533: uploop(i, 0, 7, `icall(i)')
                   2534: icall(20)
                   2535: uploop(i, 0, 7, `fcall(i)')
                   2536: fcall(20)
                   2537: 
1.15      pazsan   2538: \+
1.131     pazsan   2539: \+
1.1       anton    2540: 
1.142     pazsan   2541: \g peephole
1.46      pazsan   2542: 
1.112     pazsan   2543: \+peephole
                   2544: 
1.119     anton    2545: compile-prim1 ( a_prim -- ) gforth compile_prim1
                   2546: ""compile prim (incl. immargs) at @var{a_prim}""
                   2547: compile_prim1(a_prim);
                   2548: 
                   2549: finish-code ( -- ) gforth finish_code
                   2550: ""Perform delayed steps in code generation (branch resolution, I-cache
                   2551: flushing).""
1.149     anton    2552: IF_spTOS(sp[0]=spTOS); /* workaround for failing to save spTOS
                   2553:                          (gcc-2.95.1, gforth-fast --enable-force-reg) */
1.119     anton    2554: finish_code();
1.149     anton    2555: IF_spTOS(spTOS=sp[0]);
1.119     anton    2556: 
                   2557: forget-dyncode ( c_code -- f ) gforth-internal forget_dyncode
                   2558: f = forget_dyncode(c_code);
                   2559: 
                   2560: decompile-prim ( a_code -- a_prim ) gforth-internal decompile_prim
                   2561: ""a_prim is the code address of the primitive that has been
                   2562: compile_prim1ed to a_code""
1.121     anton    2563: a_prim = (Cell *)decompile_code((Label)a_code);
1.119     anton    2564: 
1.112     pazsan   2565: \ set-next-code and call2 do not appear in images and can be
                   2566: \ renumbered arbitrarily
1.46      pazsan   2567: 
1.112     pazsan   2568: set-next-code ( #w -- ) gforth set_next_code
                   2569: #ifdef NO_IP
                   2570: next_code = (Label)w;
                   2571: #endif
1.34      jwilke   2572: 
1.112     pazsan   2573: call2 ( #a_callee #a_ret_addr -- R:a_ret_addr ) gforth
                   2574: /* call with explicit return address */
                   2575: #ifdef NO_IP
                   2576: INST_TAIL;
                   2577: JUMP(a_callee);
1.45      anton    2578: #else
1.112     pazsan   2579: assert(0);
1.45      anton    2580: #endif
1.131     pazsan   2581: 
                   2582: tag-offsets ( -- a_addr ) gforth tag_offsets
                   2583: extern Cell groups[32];
                   2584: a_addr = groups;
1.51      anton    2585: 
1.54      pazsan   2586: \+
1.128     anton    2587: 
                   2588: \g static_super
                   2589: 
1.147     anton    2590: ifdef(`M4_ENGINE_FAST',
                   2591: `include(peeprules.vmg)')
1.54      pazsan   2592: 
1.112     pazsan   2593: \g end

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