Annotation of gforth/prim, revision 1.148

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

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