Annotation of gforth/prim, revision 1.168

1.1       anton       1: \ Gforth primitives
                      2: 
1.156     anton       3: \ Copyright (C) 1995,1996,1997,1998,2000,2003,2004 Free Software Foundation, Inc.
1.1       anton       4: 
                      5: \ This file is part of Gforth.
                      6: 
                      7: \ Gforth is free software; you can redistribute it and/or
                      8: \ modify it under the terms of the GNU General Public License
                      9: \ as published by the Free Software Foundation; either version 2
                     10: \ of the License, or (at your option) any later version.
                     11: 
                     12: \ This program is distributed in the hope that it will be useful,
                     13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
                     14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     15: \ GNU General Public License for more details.
                     16: 
                     17: \ You should have received a copy of the GNU General Public License
                     18: \ along with this program; if not, write to the Free Software
1.63      anton      19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.1       anton      20: 
                     21: 
                     22: \ WARNING: This file is processed by m4. Make sure your identifiers
                     23: \ don't collide with m4's (e.g. by undefining them).
                     24: \ 
                     25: \ 
                     26: \ 
                     27: \ This file contains primitive specifications in the following format:
                     28: \ 
1.47      anton      29: \ forth name   ( stack effect )        category        [pronunciation]
1.1       anton      30: \ [""glossary entry""]
                     31: \ C code
                     32: \ [:
                     33: \ Forth code]
                     34: \ 
1.47      anton      35: \ Note: Fields in brackets are optional.  Word specifications have to
                     36: \ be separated by at least one empty line
1.1       anton      37: \
                     38: \ Both pronounciation and stack items (in the stack effect) must
1.48      anton      39: \ conform to the C identifier syntax or the C compiler will complain.
                     40: \ If you don't have a pronounciation field, the Forth name is used,
                     41: \ and has to conform to the C identifier syntax.
1.1       anton      42: \ 
                     43: \ These specifications are automatically translated into C-code for the
                     44: \ interpreter and into some other files. I hope that your C compiler has
                     45: \ decent optimization, otherwise the automatically generated code will
                     46: \ be somewhat slow. The Forth version of the code is included for manual
                     47: \ compilers, so they will need to compile only the important words.
                     48: \ 
                     49: \ Note that stack pointer adjustment is performed according to stack
                     50: \ effect by automatically generated code and NEXT is automatically
                     51: \ appended to the C code. Also, you can use the names in the stack
                     52: \ effect in the C code. Stack access is automatic. One exception: if
                     53: \ your code does not fall through, the results are not stored into the
                     54: \ stack. Use different names on both sides of the '--', if you change a
                     55: \ value (some stores to the stack are optimized away).
1.93      anton      56: \
                     57: \ For superinstructions the syntax is:
                     58: \
                     59: \ forth-name [/ c-name] = forth-name forth-name ...
                     60: \
1.1       anton      61: \ 
                     62: \ The stack variables have the following types:
                     63: \ 
                     64: \ name matches type
                     65: \ f.*          Bool
                     66: \ c.*          Char
1.93      anton      67: \ [nw].*       Cell
1.1       anton      68: \ u.*          UCell
                     69: \ d.*          DCell
                     70: \ ud.*         UDCell
                     71: \ r.*          Float
                     72: \ a_.*         Cell *
                     73: \ c_.*         Char *
                     74: \ f_.*         Float *
                     75: \ df_.*                DFloat *
                     76: \ sf_.*                SFloat *
                     77: \ xt.*         XT
                     78: \ f83name.*    F83Name *
1.67      anton      79: 
1.79      anton      80: \E stack data-stack   sp Cell
                     81: \E stack fp-stack     fp Float
                     82: \E stack return-stack rp Cell
                     83: \E
1.67      anton      84: \E get-current prefixes set-current
                     85: \E 
                     86: \E s" Bool"            single data-stack type-prefix f
                     87: \E s" Char"            single data-stack type-prefix c
                     88: \E s" Cell"            single data-stack type-prefix n
                     89: \E s" Cell"            single data-stack type-prefix w
                     90: \E s" UCell"           single data-stack type-prefix u
                     91: \E s" DCell"           double data-stack type-prefix d
                     92: \E s" UDCell"          double data-stack type-prefix ud
                     93: \E s" Float"           single fp-stack   type-prefix r
                     94: \E s" Cell *"          single data-stack type-prefix a_
                     95: \E s" Char *"          single data-stack type-prefix c_
                     96: \E s" Float *"         single data-stack type-prefix f_
                     97: \E s" DFloat *"                single data-stack type-prefix df_
                     98: \E s" SFloat *"                single data-stack type-prefix sf_
                     99: \E s" Xt"              single data-stack type-prefix xt
                    100: \E s" struct F83Name *"        single data-stack type-prefix f83name
1.71      anton     101: \E s" struct Longname *" single data-stack type-prefix longname
1.67      anton     102: \E 
                    103: \E return-stack stack-prefix R:
                    104: \E inst-stream  stack-prefix #
                    105: \E 
                    106: \E set-current
1.97      anton     107: \E store-optimization on
1.109     anton     108: \E ' noop tail-nextp2 ! \ now INST_TAIL just stores, but does not jump
1.128     anton     109: \E
                    110: \E include-skipped-insts on \ static superinsts include cells for components
                    111: \E                          \ useful for dynamic programming and
                    112: \E                          \ superinsts across entry points
1.67      anton     113: 
1.1       anton     114: \ 
                    115: \ 
                    116: \ 
                    117: \ In addition the following names can be used:
                    118: \ ip   the instruction pointer
                    119: \ sp   the data stack pointer
                    120: \ rp   the parameter stack pointer
                    121: \ lp   the locals stack pointer
                    122: \ NEXT executes NEXT
                    123: \ cfa  
                    124: \ NEXT1        executes NEXT1
                    125: \ FLAG(x)      makes a Forth flag from a C flag
                    126: \ 
                    127: \ 
                    128: \ 
                    129: \ Percentages in comments are from Koopmans book: average/maximum use
                    130: \ (taken from four, not very representative benchmarks)
                    131: \ 
                    132: \ 
                    133: \ 
                    134: \ To do:
                    135: \ 
                    136: \ throw execute, cfa and NEXT1 out?
                    137: \ macroize *ip, ip++, *ip++ (pipelining)?
                    138: 
1.145     anton     139: \ Stack caching setup
                    140: 
1.147     anton     141: ifdef(`M4_ENGINE_FAST', `include(cache1.vmg)', `include(cache0.vmg)')
1.145     anton     142: 
1.1       anton     143: \ these m4 macros would collide with identifiers
                    144: undefine(`index')
                    145: undefine(`shift')
1.78      pazsan    146: undefine(`symbols')
1.1       anton     147: 
1.140     anton     148: \F 0 [if]
                    149: 
1.139     anton     150: \ run-time routines for non-primitives.  They are defined as
                    151: \ primitives, because that simplifies things.
                    152: 
                    153: (docol)        ( -- R:a_retaddr )      gforth-internal paren_docol
                    154: ""run-time routine for colon definitions""
1.148     anton     155: #ifdef NO_IP
                    156: a_retaddr = next_code;
                    157: INST_TAIL;
                    158: goto **(Label *)PFA(CFA);
                    159: #else /* !defined(NO_IP) */
1.141     anton     160: a_retaddr = (Cell *)IP;
1.139     anton     161: SET_IP((Xt *)PFA(CFA));
1.148     anton     162: #endif /* !defined(NO_IP) */
1.139     anton     163: 
                    164: (docon) ( -- w )       gforth-internal paren_docon
                    165: ""run-time routine for constants""
                    166: w = *(Cell *)PFA(CFA);
1.148     anton     167: #ifdef NO_IP
                    168: INST_TAIL;
                    169: goto *next_code;
                    170: #endif /* defined(NO_IP) */
1.139     anton     171: 
                    172: (dovar) ( -- a_body )  gforth-internal paren_dovar
                    173: ""run-time routine for variables and CREATEd words""
                    174: a_body = PFA(CFA);
1.148     anton     175: #ifdef NO_IP
                    176: INST_TAIL;
                    177: goto *next_code;
                    178: #endif /* defined(NO_IP) */
1.139     anton     179: 
                    180: (douser) ( -- a_user ) gforth-internal paren_douser
                    181: ""run-time routine for constants""
                    182: a_user = (Cell *)(up+*(Cell *)PFA(CFA));
1.148     anton     183: #ifdef NO_IP
                    184: INST_TAIL;
                    185: goto *next_code;
                    186: #endif /* defined(NO_IP) */
1.139     anton     187: 
                    188: (dodefer) ( -- )       gforth-internal paren_dodefer
                    189: ""run-time routine for deferred words""
1.148     anton     190: #ifndef NO_IP
1.141     anton     191: ip=IP; /* undo any ip updating that may have been performed by NEXT_P0 */
1.148     anton     192: #endif /* !defined(NO_IP) */
1.141     anton     193: SUPER_END; /* !! probably unnecessary and may lead to measurement errors */
1.161     anton     194: VM_JUMP(EXEC1(*(Xt *)PFA(CFA)));
1.139     anton     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
1.76      anton     252: SUPER_END;
1.161     anton     253: VM_JUMP(EXEC1(xt));
1.1       anton     254: 
1.47      anton     255: perform        ( a_addr -- )   gforth
1.55      anton     256: ""@code{@@ execute}.""
1.1       anton     257: /* and pfe */
1.102     anton     258: #ifndef NO_IP
1.1       anton     259: ip=IP;
1.102     anton     260: #endif
1.76      anton     261: SUPER_END;
1.161     anton     262: VM_JUMP(EXEC1(*(Xt *)a_addr));
1.1       anton     263: :
                    264:  @ execute ;
                    265: 
1.112     pazsan    266: ;s     ( R:w -- )              gforth  semis
                    267: ""The primitive compiled by @code{EXIT}.""
                    268: #ifdef NO_IP
                    269: INST_TAIL;
                    270: goto *(void *)w;
                    271: #else
                    272: SET_IP((Xt *)w);
                    273: #endif
                    274: 
                    275: unloop ( R:w1 R:w2 -- )        core
                    276: /* !! alias for 2rdrop */
                    277: :
                    278:  r> rdrop rdrop >r ;
                    279: 
                    280: lit-perform    ( #a_addr -- )  new     lit_perform
                    281: #ifndef NO_IP
                    282: ip=IP;
                    283: #endif
                    284: SUPER_END;
1.161     anton     285: VM_JUMP(EXEC1(*(Xt *)a_addr));
1.112     pazsan    286: 
                    287: does-exec ( #a_cfa -- R:nest a_pfa )   new     does_exec
                    288: #ifdef NO_IP
                    289: /* compiled to LIT CALL by compile_prim */
                    290: assert(0);
                    291: #else
                    292: a_pfa = PFA(a_cfa);
                    293: nest = (Cell)IP;
                    294: IF_spTOS(spTOS = sp[0]);
                    295: #ifdef DEBUG
                    296:     {
                    297:       CFA_TO_NAME(a_cfa);
                    298:       fprintf(stderr,"%08lx: does %08lx %.*s\n",
                    299:              (Cell)ip,(Cell)a_cfa,len,name);
                    300:     }
                    301: #endif
                    302: SET_IP(DOES_CODE1(a_cfa));
                    303: #endif
                    304: 
1.15      pazsan    305: \+glocals
1.1       anton     306: 
1.112     pazsan    307: branch-lp+!# ( #a_target #nlocals -- ) gforth  branch_lp_plus_store_number
1.1       anton     308: /* this will probably not be used */
1.68      anton     309: lp += nlocals;
1.112     pazsan    310: #ifdef NO_IP
                    311: INST_TAIL;
                    312: JUMP(a_target);
                    313: #else
                    314: SET_IP((Xt *)a_target);
                    315: #endif
1.1       anton     316: 
1.15      pazsan    317: \+
1.1       anton     318: 
1.112     pazsan    319: branch ( #a_target -- )        gforth
                    320: #ifdef NO_IP
                    321: INST_TAIL;
                    322: JUMP(a_target);
                    323: #else
                    324: SET_IP((Xt *)a_target);
                    325: #endif
1.1       anton     326: :
1.112     pazsan    327:  r> @ >r ;
1.1       anton     328: 
1.112     pazsan    329: \ condbranch(forthname,stackeffect,restline,code1,code2,forthcode)
1.1       anton     330: \ this is non-syntactical: code must open a brace that is closed by the macro
1.159     anton     331: \ condbranch(forthname,stackeffect,restline,code1,code2,forthcode)
                    332: \ this is non-syntactical: code must open a brace that is closed by the macro
1.1       anton     333: define(condbranch,
1.159     anton     334: $1 ( `#'a_target $2 ) $3
                    335: $4     #ifdef NO_IP
                    336: INST_TAIL;
                    337: #endif
                    338: $5     #ifdef NO_IP
                    339: JUMP(a_target);
                    340: #else
                    341: SET_IP((Xt *)a_target);
                    342: #endif
                    343: }
                    344: $6
                    345: 
                    346: \+glocals
                    347: 
                    348: $1-lp+!`#' ( `#'a_target `#'nlocals $2 ) $3_lp_plus_store_number
                    349: $4     #ifdef NO_IP
                    350: INST_TAIL;
                    351: #endif
                    352: $5     lp += nlocals;
                    353: #ifdef NO_IP
                    354: JUMP(a_target);
                    355: #else
                    356: SET_IP((Xt *)a_target);
                    357: #endif
                    358: }
                    359: 
                    360: \+
                    361: )
                    362: 
                    363: \ version that generates two jumps (not good for PR 15242 workaround)
                    364: define(condbranch_twojump,
1.112     pazsan    365: $1 ( `#'a_target $2 ) $3
                    366: $4     #ifdef NO_IP
1.96      anton     367: INST_TAIL;
1.112     pazsan    368: #endif
                    369: $5     #ifdef NO_IP
                    370: JUMP(a_target);
                    371: #else
                    372: SET_IP((Xt *)a_target);
                    373: INST_TAIL; NEXT_P2;
                    374: #endif
1.1       anton     375: }
1.87      anton     376: SUPER_CONTINUE;
1.112     pazsan    377: $6
1.1       anton     378: 
1.15      pazsan    379: \+glocals
1.1       anton     380: 
1.112     pazsan    381: $1-lp+!`#' ( `#'a_target `#'nlocals $2 ) $3_lp_plus_store_number
                    382: $4     #ifdef NO_IP
1.96      anton     383: INST_TAIL;
1.112     pazsan    384: #endif
                    385: $5     lp += nlocals;
                    386: #ifdef NO_IP
                    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: 
1.15      pazsan    395: \+
1.1       anton     396: )
                    397: 
1.68      anton     398: condbranch(?branch,f --,f83    question_branch,
1.112     pazsan    399: ,if (f==0) {
1.5       jwilke    400: ,:
1.112     pazsan    401:  0= dup 0=          \ !f f
                    402:  r> tuck cell+      \ !f branchoffset f IP+
                    403:  and -rot @ and or  \ f&IP+|!f&branch
1.5       jwilke    404:  >r ;)
1.1       anton     405: 
                    406: \ we don't need an lp_plus_store version of the ?dup-stuff, because it
                    407: \ is only used in if's (yet)
                    408: 
1.15      pazsan    409: \+xconds
1.1       anton     410: 
1.112     pazsan    411: ?dup-?branch   ( #a_target f -- f )    new     question_dupe_question_branch
1.1       anton     412: ""The run-time procedure compiled by @code{?DUP-IF}.""
                    413: if (f==0) {
                    414:   sp++;
1.64      anton     415:   IF_spTOS(spTOS = sp[0]);
1.112     pazsan    416: #ifdef NO_IP
                    417: INST_TAIL;
                    418: JUMP(a_target);
                    419: #else
                    420: SET_IP((Xt *)a_target);
                    421:   INST_TAIL; NEXT_P2;
                    422: #endif
1.1       anton     423: }
1.87      anton     424: SUPER_CONTINUE;
1.1       anton     425: 
1.112     pazsan    426: ?dup-0=-?branch ( #a_target f -- ) new question_dupe_zero_equals_question_branch
1.1       anton     427: ""The run-time procedure compiled by @code{?DUP-0=-IF}.""
                    428: /* the approach taken here of declaring the word as having the stack
                    429: effect ( f -- ) and correcting for it in the branch-taken case costs a
                    430: few cycles in that case, but is easy to convert to a CONDBRANCH
                    431: invocation */
                    432: if (f!=0) {
                    433:   sp--;
1.112     pazsan    434: #ifdef NO_IP
                    435:   JUMP(a_target);
                    436: #else
                    437:   SET_IP((Xt *)a_target);
1.1       anton     438:   NEXT;
1.112     pazsan    439: #endif
1.1       anton     440: }
1.87      anton     441: SUPER_CONTINUE;
1.1       anton     442: 
1.15      pazsan    443: \+
1.31      jwilke    444: \fhas? skiploopprims 0= [IF]
1.1       anton     445: 
1.68      anton     446: condbranch((next),R:n1 -- R:n2,cmFORTH paren_next,
1.65      anton     447: n2=n1-1;
1.112     pazsan    448: ,if (n1) {
1.1       anton     449: ,:
                    450:  r> r> dup 1- >r
1.112     pazsan    451:  IF @ >r ELSE cell+ >r THEN ;)
1.1       anton     452: 
1.68      anton     453: condbranch((loop),R:nlimit R:n1 -- R:nlimit R:n2,gforth        paren_loop,
1.65      anton     454: n2=n1+1;
1.112     pazsan    455: ,if (n2 != nlimit) {
1.1       anton     456: ,:
                    457:  r> r> 1+ r> 2dup =
                    458:  IF >r 1- >r cell+ >r
1.112     pazsan    459:  ELSE >r >r @ >r THEN ;)
1.1       anton     460: 
1.68      anton     461: condbranch((+loop),n R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_plus_loop,
1.1       anton     462: /* !! check this thoroughly */
                    463: /* sign bit manipulation and test: (x^y)<0 is equivalent to (x<0) != (y<0) */
                    464: /* dependent upon two's complement arithmetic */
1.65      anton     465: Cell olddiff = n1-nlimit;
                    466: n2=n1+n;       
1.149     anton     467: ,if (((olddiff^(olddiff+n))    /* the limit is not crossed */
                    468:      &(olddiff^n))            /* OR it is a wrap-around effect */
                    469:     >=0) { /* & is used to avoid having two branches for gforth-native */
1.1       anton     470: ,:
                    471:  r> swap
                    472:  r> r> 2dup - >r
                    473:  2 pick r@ + r@ xor 0< 0=
                    474:  3 pick r> xor 0< 0= or
1.112     pazsan    475:  IF    >r + >r @ >r
1.1       anton     476:  ELSE  >r >r drop cell+ >r THEN ;)
                    477: 
1.15      pazsan    478: \+xconds
1.1       anton     479: 
1.68      anton     480: condbranch((-loop),u R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_minus_loop,
1.65      anton     481: UCell olddiff = n1-nlimit;
                    482: n2=n1-u;
1.112     pazsan    483: ,if (olddiff>u) {
1.1       anton     484: ,)
                    485: 
1.68      anton     486: condbranch((s+loop),n R:nlimit R:n1 -- R:nlimit R:n2,gforth    paren_symmetric_plus_loop,
1.1       anton     487: ""The run-time procedure compiled by S+LOOP. It loops until the index
                    488: crosses the boundary between limit and limit-sign(n). I.e. a symmetric
                    489: version of (+LOOP).""
                    490: /* !! check this thoroughly */
1.65      anton     491: Cell diff = n1-nlimit;
1.1       anton     492: Cell newdiff = diff+n;
                    493: if (n<0) {
                    494:     diff = -diff;
                    495:     newdiff = -newdiff;
                    496: }
1.65      anton     497: n2=n1+n;
1.149     anton     498: ,if (((~diff)|newdiff)<0) { /* use | to avoid two branches for gforth-native */
1.1       anton     499: ,)
                    500: 
1.15      pazsan    501: \+
1.1       anton     502: 
1.112     pazsan    503: (for)   ( ncount -- R:nlimit R:ncount )         cmFORTH         paren_for
1.1       anton     504: /* or (for) = >r -- collides with unloop! */
1.65      anton     505: nlimit=0;
1.1       anton     506: :
                    507:  r> swap 0 >r >r >r ;
                    508: 
1.112     pazsan    509: (do)    ( nlimit nstart -- R:nlimit R:nstart )  gforth          paren_do
1.1       anton     510: :
                    511:  r> swap rot >r >r >r ;
                    512: 
1.112     pazsan    513: (?do) ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth  paren_question_do
                    514: #ifdef NO_IP
                    515:     INST_TAIL;
                    516: #endif
1.1       anton     517: if (nstart == nlimit) {
1.112     pazsan    518: #ifdef NO_IP
                    519:     JUMP(a_target);
                    520: #else
                    521:     SET_IP((Xt *)a_target);
                    522: #endif
1.1       anton     523: }
                    524: :
                    525:   2dup =
                    526:   IF   r> swap rot >r >r
1.112     pazsan    527:        @ >r
1.1       anton     528:   ELSE r> swap rot >r >r
                    529:        cell+ >r
                    530:   THEN ;                               \ --> CORE-EXT
                    531: 
1.15      pazsan    532: \+xconds
1.1       anton     533: 
1.112     pazsan    534: (+do)  ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth paren_plus_do
                    535: #ifdef NO_IP
                    536:     INST_TAIL;
                    537: #endif
1.1       anton     538: if (nstart >= nlimit) {
1.112     pazsan    539: #ifdef NO_IP
                    540:     JUMP(a_target);
                    541: #else
                    542:     SET_IP((Xt *)a_target);
                    543: #endif
1.1       anton     544: }
                    545: :
                    546:  swap 2dup
                    547:  r> swap >r swap >r
                    548:  >=
                    549:  IF
1.112     pazsan    550:      @
1.1       anton     551:  ELSE
                    552:      cell+
                    553:  THEN  >r ;
                    554: 
1.112     pazsan    555: (u+do) ( #a_target ulimit ustart -- R:ulimit R:ustart ) gforth paren_u_plus_do
                    556: #ifdef NO_IP
                    557:     INST_TAIL;
                    558: #endif
1.1       anton     559: if (ustart >= ulimit) {
1.112     pazsan    560: #ifdef NO_IP
                    561: JUMP(a_target);
                    562: #else
                    563: SET_IP((Xt *)a_target);
                    564: #endif
1.1       anton     565: }
                    566: :
                    567:  swap 2dup
                    568:  r> swap >r swap >r
                    569:  u>=
                    570:  IF
1.112     pazsan    571:      @
1.1       anton     572:  ELSE
                    573:      cell+
                    574:  THEN  >r ;
                    575: 
1.112     pazsan    576: (-do)  ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth paren_minus_do
                    577: #ifdef NO_IP
                    578:     INST_TAIL;
                    579: #endif
1.1       anton     580: if (nstart <= nlimit) {
1.112     pazsan    581: #ifdef NO_IP
                    582: JUMP(a_target);
                    583: #else
                    584: SET_IP((Xt *)a_target);
                    585: #endif
1.1       anton     586: }
                    587: :
                    588:  swap 2dup
                    589:  r> swap >r swap >r
                    590:  <=
                    591:  IF
1.112     pazsan    592:      @
1.1       anton     593:  ELSE
                    594:      cell+
                    595:  THEN  >r ;
                    596: 
1.112     pazsan    597: (u-do) ( #a_target ulimit ustart -- R:ulimit R:ustart ) gforth paren_u_minus_do
                    598: #ifdef NO_IP
                    599:     INST_TAIL;
                    600: #endif
1.1       anton     601: if (ustart <= ulimit) {
1.112     pazsan    602: #ifdef NO_IP
                    603: JUMP(a_target);
                    604: #else
                    605: SET_IP((Xt *)a_target);
                    606: #endif
1.1       anton     607: }
                    608: :
                    609:  swap 2dup
                    610:  r> swap >r swap >r
                    611:  u<=
                    612:  IF
1.112     pazsan    613:      @
1.1       anton     614:  ELSE
                    615:      cell+
                    616:  THEN  >r ;
                    617: 
1.15      pazsan    618: \+
1.1       anton     619: 
1.5       jwilke    620: \ don't make any assumptions where the return stack is!!
                    621: \ implement this in machine code if it should run quickly!
                    622: 
1.65      anton     623: i      ( R:n -- R:n n )                core
1.1       anton     624: :
1.5       jwilke    625: \ rp@ cell+ @ ;
                    626:   r> r> tuck >r >r ;
1.1       anton     627: 
1.65      anton     628: i'     ( R:w R:w2 -- R:w R:w2 w )              gforth          i_tick
1.1       anton     629: :
1.5       jwilke    630: \ rp@ cell+ cell+ @ ;
                    631:   r> r> r> dup itmp ! >r >r >r itmp @ ;
                    632: variable itmp
1.1       anton     633: 
1.65      anton     634: j      ( R:n R:d1 -- n R:n R:d1 )              core
1.1       anton     635: :
1.5       jwilke    636: \ rp@ cell+ cell+ cell+ @ ;
                    637:   r> r> r> r> dup itmp ! >r >r >r >r itmp @ ;
                    638: [IFUNDEF] itmp variable itmp [THEN]
1.1       anton     639: 
1.65      anton     640: k      ( R:n R:d1 R:d2 -- n R:n R:d1 R:d2 )            gforth
1.1       anton     641: :
1.5       jwilke    642: \ rp@ [ 5 cells ] Literal + @ ;
                    643:   r> r> r> r> r> r> dup itmp ! >r >r >r >r >r >r itmp @ ;
                    644: [IFUNDEF] itmp variable itmp [THEN]
1.31      jwilke    645: 
                    646: \f[THEN]
1.1       anton     647: 
                    648: \ digit is high-level: 0/0%
                    649: 
1.83      pazsan    650: \g strings
                    651: 
1.47      anton     652: move   ( c_from c_to ucount -- )               core
1.52      anton     653: ""Copy the contents of @i{ucount} aus at @i{c-from} to
1.33      anton     654: @i{c-to}. @code{move} works correctly even if the two areas overlap.""
1.52      anton     655: /* !! note that the standard specifies addr, not c-addr */
1.1       anton     656: memmove(c_to,c_from,ucount);
                    657: /* make an Ifdef for bsd and others? */
                    658: :
                    659:  >r 2dup u< IF r> cmove> ELSE r> cmove THEN ;
                    660: 
1.47      anton     661: cmove  ( c_from c_to u -- )    string  c_move
1.33      anton     662: ""Copy the contents of @i{ucount} characters from data space at
                    663: @i{c-from} to @i{c-to}. The copy proceeds @code{char}-by-@code{char}
                    664: from low address to high address; i.e., for overlapping areas it is
                    665: safe if @i{c-to}=<@i{c-from}.""
1.125     anton     666: cmove(c_from,c_to,u);
1.1       anton     667: :
                    668:  bounds ?DO  dup c@ I c! 1+  LOOP  drop ;
                    669: 
1.47      anton     670: cmove> ( c_from c_to u -- )    string  c_move_up
1.33      anton     671: ""Copy the contents of @i{ucount} characters from data space at
                    672: @i{c-from} to @i{c-to}. The copy proceeds @code{char}-by-@code{char}
                    673: from high address to low address; i.e., for overlapping areas it is
                    674: safe if @i{c-to}>=@i{c-from}.""
1.125     anton     675: cmove_up(c_from,c_to,u);
1.1       anton     676: :
                    677:  dup 0= IF  drop 2drop exit  THEN
                    678:  rot over + -rot bounds swap 1-
                    679:  DO  1- dup c@ I c!  -1 +LOOP  drop ;
                    680: 
1.47      anton     681: fill   ( c_addr u c -- )       core
1.52      anton     682: ""Store @i{c} in @i{u} chars starting at @i{c-addr}.""
1.1       anton     683: memset(c_addr,c,u);
                    684: :
                    685:  -rot bounds
                    686:  ?DO  dup I c!  LOOP  drop ;
                    687: 
1.47      anton     688: compare        ( c_addr1 u1 c_addr2 u2 -- n )  string
1.29      crook     689: ""Compare two strings lexicographically. If they are equal, @i{n} is 0; if
                    690: the first string is smaller, @i{n} is -1; if the first string is larger, @i{n}
1.1       anton     691: is 1. Currently this is based on the machine's character
1.26      crook     692: comparison. In the future, this may change to consider the current
1.1       anton     693: locale and its collation order.""
1.46      pazsan    694: /* close ' to keep fontify happy */ 
1.125     anton     695: n = compare(c_addr1, u1, c_addr2, u2);
1.1       anton     696: :
1.43      pazsan    697:  rot 2dup swap - >r min swap -text dup
                    698:  IF  rdrop  ELSE  drop r> sgn  THEN ;
1.143     pazsan    699: : -text ( c_addr1 u c_addr2 -- n )
                    700:  swap bounds
                    701:  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                    702:  ELSE  c@ I c@ - unloop  THEN  sgn ;
1.43      pazsan    703: : sgn ( n -- -1/0/1 )
                    704:  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton     705: 
1.125     anton     706: \ -text is only used by replaced primitives now; move it elsewhere
                    707: \ -text        ( c_addr1 u c_addr2 -- n )      new     dash_text
                    708: \ n = memcmp(c_addr1, c_addr2, u);
                    709: \ if (n<0)
                    710: \   n = -1;
                    711: \ else if (n>0)
                    712: \   n = 1;
                    713: \ :
                    714: \  swap bounds
                    715: \  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                    716: \  ELSE  c@ I c@ - unloop  THEN  sgn ;
                    717: \ : sgn ( n -- -1/0/1 )
                    718: \  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton     719: 
1.47      anton     720: toupper        ( c1 -- c2 )    gforth
1.29      crook     721: ""If @i{c1} is a lower-case character (in the current locale), @i{c2}
1.25      anton     722: is the equivalent upper-case character. All other characters are unchanged.""
1.1       anton     723: c2 = toupper(c1);
                    724: :
                    725:  dup [char] a - [ char z char a - 1 + ] Literal u<  bl and - ;
                    726: 
1.47      anton     727: /string        ( c_addr1 u1 n -- c_addr2 u2 )  string  slash_string
1.29      crook     728: ""Adjust the string specified by @i{c-addr1, u1} to remove @i{n}
1.27      crook     729: characters from the start of the string.""
1.1       anton     730: c_addr2 = c_addr1+n;
                    731: u2 = u1-n;
                    732: :
                    733:  tuck - >r + r> dup 0< IF  - 0  THEN ;
                    734: 
1.83      pazsan    735: \g arith
                    736: 
1.112     pazsan    737: lit    ( #w -- w )             gforth
                    738: :
                    739:  r> dup @ swap cell+ >r ;
                    740: 
1.47      anton     741: +      ( n1 n2 -- n )          core    plus
1.1       anton     742: n = n1+n2;
                    743: 
1.112     pazsan    744: \ lit+ / lit_plus = lit +
                    745: 
                    746: lit+   ( n1 #n2 -- n )         new     lit_plus
                    747: n=n1+n2;
                    748: 
1.1       anton     749: \ PFE-0.9.14 has it differently, but the next release will have it as follows
1.47      anton     750: under+ ( n1 n2 n3 -- n n2 )    gforth  under_plus
1.29      crook     751: ""add @i{n3} to @i{n1} (giving @i{n})""
1.1       anton     752: n = n1+n3;
                    753: :
                    754:  rot + swap ;
                    755: 
1.47      anton     756: -      ( n1 n2 -- n )          core    minus
1.1       anton     757: n = n1-n2;
                    758: :
                    759:  negate + ;
                    760: 
1.47      anton     761: negate ( n1 -- n2 )            core
1.1       anton     762: /* use minus as alias */
                    763: n2 = -n1;
                    764: :
                    765:  invert 1+ ;
                    766: 
1.47      anton     767: 1+     ( n1 -- n2 )            core            one_plus
1.1       anton     768: n2 = n1+1;
                    769: :
                    770:  1 + ;
                    771: 
1.47      anton     772: 1-     ( n1 -- n2 )            core            one_minus
1.1       anton     773: n2 = n1-1;
                    774: :
                    775:  1 - ;
                    776: 
1.47      anton     777: max    ( n1 n2 -- n )  core
1.1       anton     778: if (n1<n2)
                    779:   n = n2;
                    780: else
                    781:   n = n1;
                    782: :
                    783:  2dup < IF swap THEN drop ;
                    784: 
1.47      anton     785: min    ( n1 n2 -- n )  core
1.1       anton     786: if (n1<n2)
                    787:   n = n1;
                    788: else
                    789:   n = n2;
                    790: :
                    791:  2dup > IF swap THEN drop ;
                    792: 
1.52      anton     793: abs    ( n -- u )      core
                    794: if (n<0)
                    795:   u = -n;
1.1       anton     796: else
1.52      anton     797:   u = n;
1.1       anton     798: :
                    799:  dup 0< IF negate THEN ;
                    800: 
1.47      anton     801: *      ( n1 n2 -- n )          core    star
1.1       anton     802: n = n1*n2;
                    803: :
                    804:  um* drop ;
                    805: 
1.47      anton     806: /      ( n1 n2 -- n )          core    slash
1.1       anton     807: n = n1/n2;
1.162     pazsan    808: if(FLOORED_DIV && (n1 < 0) != (n2 < 0) && (n1%n2 != 0)) n--;
1.1       anton     809: :
                    810:  /mod nip ;
                    811: 
1.47      anton     812: mod    ( n1 n2 -- n )          core
1.1       anton     813: n = n1%n2;
1.162     pazsan    814: if(FLOORED_DIV && (n1 < 0) != (n2 < 0) && n!=0) n += n2;
1.1       anton     815: :
                    816:  /mod drop ;
                    817: 
1.47      anton     818: /mod   ( n1 n2 -- n3 n4 )              core            slash_mod
1.1       anton     819: n4 = n1/n2;
                    820: n3 = n1%n2; /* !! is this correct? look into C standard! */
1.162     pazsan    821: if (FLOORED_DIV && (n1<0) != (n2<0) && n3!=0) {
                    822:   n4--;
                    823:   n3+=n2;
                    824: }
1.1       anton     825: :
                    826:  >r s>d r> fm/mod ;
                    827: 
1.162     pazsan    828: */mod  ( n1 n2 n3 -- n4 n5 )   core    star_slash_mod
                    829: ""n1*n2=n3*n5+n4, with the intermediate result (n1*n2) being double.""
                    830: #ifdef BUGGY_LL_MUL
                    831: DCell d = mmul(n1,n2);
                    832: #else
                    833: DCell d = (DCell)n1 * (DCell)n2;
                    834: #endif
                    835: #ifdef BUGGY_LL_DIV
                    836: DCell r = fmdiv(d,n3);
                    837: n4=DHI(r);
                    838: n5=DLO(r);
                    839: #else
                    840: /* assumes that the processor uses either floored or symmetric division */
                    841: n5 = d/n3;
                    842: n4 = d%n3;
                    843: if (FLOORED_DIV && (d<0) != (n3<0) && n4!=0) {
                    844:   n5--;
                    845:   n4+=n3;
                    846: }
                    847: #endif
                    848: :
                    849:  >r m* r> fm/mod ;
                    850: 
                    851: */     ( n1 n2 n3 -- n4 )      core    star_slash
                    852: ""n4=(n1*n2)/n3, with the intermediate result being double.""
                    853: #ifdef BUGGY_LL_MUL
                    854: DCell d = mmul(n1,n2);
                    855: #else
                    856: DCell d = (DCell)n1 * (DCell)n2;
                    857: #endif
                    858: #ifdef BUGGY_LL_DIV
                    859: DCell r = fmdiv(d,n3);
1.168   ! pazsan    860: n4=DLO(r);
1.162     pazsan    861: #else
                    862: /* assumes that the processor uses either floored or symmetric division */
                    863: n4 = d/n3;
                    864: if (FLOORED_DIV && (d<0) != (n3<0) && (d%n3)!=0) n4--;
                    865: #endif
                    866: :
                    867:  */mod nip ;
                    868: 
1.47      anton     869: 2*     ( n1 -- n2 )            core            two_star
1.52      anton     870: ""Shift left by 1; also works on unsigned numbers""
1.1       anton     871: n2 = 2*n1;
                    872: :
                    873:  dup + ;
                    874: 
1.47      anton     875: 2/     ( n1 -- n2 )            core            two_slash
1.52      anton     876: ""Arithmetic shift right by 1.  For signed numbers this is a floored
                    877: division by 2 (note that @code{/} not necessarily floors).""
1.1       anton     878: n2 = n1>>1;
                    879: :
                    880:  dup MINI and IF 1 ELSE 0 THEN
                    881:  [ bits/byte cell * 1- ] literal 
1.5       jwilke    882:  0 DO 2* swap dup 2* >r MINI and 
1.1       anton     883:      IF 1 ELSE 0 THEN or r> swap
                    884:  LOOP nip ;
                    885: 
1.47      anton     886: fm/mod ( d1 n1 -- n2 n3 )              core            f_m_slash_mod
1.29      crook     887: ""Floored division: @i{d1} = @i{n3}*@i{n1}+@i{n2}, @i{n1}>@i{n2}>=0 or 0>=@i{n2}>@i{n1}.""
1.158     pazsan    888: #ifdef BUGGY_LL_DIV
1.165     anton     889: #ifdef ASM_SM_SLASH_REM
                    890: ASM_SM_SLASH_REM(d1.lo, d1.hi, n1, n2, n3);
                    891: if ((d1.hi<0) != (n1<0) && n2!=0) {
                    892:   n3--;
                    893:   n2+=n1;
                    894: }
                    895: #else /* !defined(ASM_SM_SLASH_REM) */
1.1       anton     896: DCell r = fmdiv(d1,n1);
1.162     pazsan    897: n2=DHI(r);
                    898: n3=DLO(r);
1.165     anton     899: #endif /* !defined(ASM_SM_SLASH_REM) */
1.1       anton     900: #else
1.166     anton     901: #ifdef ASM_SM_SLASH_REM4
                    902: ASM_SM_SLASH_REM4(d1, n1, n2, n3);
                    903: if ((d1<0) != (n1<0) && n2!=0) {
                    904:   n3--;
                    905:   n2+=n1;
                    906: }
                    907: #else /* !defined(ASM_SM_SLASH_REM4) */
1.1       anton     908: /* assumes that the processor uses either floored or symmetric division */
                    909: n3 = d1/n1;
                    910: n2 = d1%n1;
                    911: /* note that this 1%-3>0 is optimized by the compiler */
                    912: if (1%-3>0 && (d1<0) != (n1<0) && n2!=0) {
                    913:   n3--;
                    914:   n2+=n1;
                    915: }
1.166     anton     916: #endif /* !defined(ASM_SM_SLASH_REM4) */
1.1       anton     917: #endif
                    918: :
                    919:  dup >r dup 0< IF  negate >r dnegate r>  THEN
                    920:  over       0< IF  tuck + swap  THEN
                    921:  um/mod
                    922:  r> 0< IF  swap negate swap  THEN ;
                    923: 
1.47      anton     924: sm/rem ( d1 n1 -- n2 n3 )              core            s_m_slash_rem
1.29      crook     925: ""Symmetric division: @i{d1} = @i{n3}*@i{n1}+@i{n2}, sign(@i{n2})=sign(@i{d1}) or 0.""
1.158     pazsan    926: #ifdef BUGGY_LL_DIV
1.165     anton     927: #ifdef ASM_SM_SLASH_REM
                    928: ASM_SM_SLASH_REM(d1.lo, d1.hi, n1, n2, n3);
                    929: #else /* !defined(ASM_SM_SLASH_REM) */
1.1       anton     930: DCell r = smdiv(d1,n1);
1.162     pazsan    931: n2=DHI(r);
                    932: n3=DLO(r);
1.165     anton     933: #endif /* !defined(ASM_SM_SLASH_REM) */
1.1       anton     934: #else
1.166     anton     935: #ifdef ASM_SM_SLASH_REM4
                    936: ASM_SM_SLASH_REM4(d1, n1, n2, n3);
                    937: #else /* !defined(ASM_SM_SLASH_REM4) */
1.1       anton     938: /* assumes that the processor uses either floored or symmetric division */
                    939: n3 = d1/n1;
                    940: n2 = d1%n1;
                    941: /* note that this 1%-3<0 is optimized by the compiler */
                    942: if (1%-3<0 && (d1<0) != (n1<0) && n2!=0) {
                    943:   n3++;
                    944:   n2-=n1;
                    945: }
1.166     anton     946: #endif /* !defined(ASM_SM_SLASH_REM4) */
1.1       anton     947: #endif
                    948: :
                    949:  over >r dup >r abs -rot
                    950:  dabs rot um/mod
                    951:  r> r@ xor 0< IF       negate       THEN
                    952:  r>        0< IF  swap negate swap  THEN ;
                    953: 
1.47      anton     954: m*     ( n1 n2 -- d )          core    m_star
1.158     pazsan    955: #ifdef BUGGY_LL_MUL
1.1       anton     956: d = mmul(n1,n2);
                    957: #else
                    958: d = (DCell)n1 * (DCell)n2;
                    959: #endif
                    960: :
                    961:  2dup      0< and >r
                    962:  2dup swap 0< and >r
                    963:  um* r> - r> - ;
                    964: 
1.47      anton     965: um*    ( u1 u2 -- ud )         core    u_m_star
1.1       anton     966: /* use u* as alias */
1.158     pazsan    967: #ifdef BUGGY_LL_MUL
1.1       anton     968: ud = ummul(u1,u2);
                    969: #else
                    970: ud = (UDCell)u1 * (UDCell)u2;
                    971: #endif
                    972: :
1.137     pazsan    973:    0 -rot dup [ 8 cells ] literal -
1.1       anton     974:    DO
1.137     pazsan    975:        dup 0< I' and d2*+ drop
                    976:    LOOP ;
1.1       anton     977: : d2*+ ( ud n -- ud+n c )
                    978:    over MINI
                    979:    and >r >r 2dup d+ swap r> + swap r> ;
                    980: 
1.47      anton     981: um/mod ( ud u1 -- u2 u3 )              core    u_m_slash_mod
1.32      anton     982: ""ud=u3*u1+u2, u1>u2>=0""
1.158     pazsan    983: #ifdef BUGGY_LL_DIV
1.165     anton     984: #ifdef ASM_UM_SLASH_MOD
                    985: ASM_UM_SLASH_MOD(ud.lo, ud.hi, u1, u2, u3);
                    986: #else /* !defined(ASM_UM_SLASH_MOD) */
1.1       anton     987: UDCell r = umdiv(ud,u1);
1.162     pazsan    988: u2=DHI(r);
                    989: u3=DLO(r);
1.165     anton     990: #endif /* !defined(ASM_UM_SLASH_MOD) */
1.1       anton     991: #else
1.166     anton     992: #ifdef ASM_UM_SLASH_MOD4
1.167     anton     993: ASM_UM_SLASH_MOD4(ud, u1, u2, u3);
1.166     anton     994: #else /* !defined(ASM_UM_SLASH_MOD4) */
1.1       anton     995: u3 = ud/u1;
                    996: u2 = ud%u1;
1.166     anton     997: #endif /* !defined(ASM_UM_SLASH_MOD4) */
1.1       anton     998: #endif
                    999: :
                   1000:    0 swap [ 8 cells 1 + ] literal 0
1.5       jwilke   1001:    ?DO /modstep
1.1       anton    1002:    LOOP drop swap 1 rshift or swap ;
                   1003: : /modstep ( ud c R: u -- ud-?u c R: u )
1.5       jwilke   1004:    >r over r@ u< 0= or IF r@ - 1 ELSE 0 THEN  d2*+ r> ;
1.1       anton    1005: : d2*+ ( ud n -- ud+n c )
                   1006:    over MINI
                   1007:    and >r >r 2dup d+ swap r> + swap r> ;
                   1008: 
1.47      anton    1009: m+     ( d1 n -- d2 )          double          m_plus
1.158     pazsan   1010: #ifdef BUGGY_LL_ADD
                   1011: DLO_IS(d2, DLO(d1)+n);
                   1012: DHI_IS(d2, DHI(d1) - (n<0) + (DLO(d2)<DLO(d1)));
1.1       anton    1013: #else
                   1014: d2 = d1+n;
                   1015: #endif
                   1016: :
                   1017:  s>d d+ ;
                   1018: 
1.47      anton    1019: d+     ( d1 d2 -- d )          double  d_plus
1.158     pazsan   1020: #ifdef BUGGY_LL_ADD
                   1021: DLO_IS(d, DLO(d1) + DLO(d2));
                   1022: DHI_IS(d, DHI(d1) + DHI(d2) + (d.lo<DLO(d1)));
1.1       anton    1023: #else
                   1024: d = d1+d2;
                   1025: #endif
                   1026: :
                   1027:  rot + >r tuck + swap over u> r> swap - ;
                   1028: 
1.47      anton    1029: d-     ( d1 d2 -- d )          double          d_minus
1.158     pazsan   1030: #ifdef BUGGY_LL_ADD
                   1031: DLO_IS(d, DLO(d1) - DLO(d2));
                   1032: DHI_IS(d, DHI(d1)-DHI(d2)-(DLO(d1)<DLO(d2)));
1.1       anton    1033: #else
                   1034: d = d1-d2;
                   1035: #endif
                   1036: :
                   1037:  dnegate d+ ;
                   1038: 
1.47      anton    1039: dnegate        ( d1 -- d2 )            double  d_negate
1.1       anton    1040: /* use dminus as alias */
1.158     pazsan   1041: #ifdef BUGGY_LL_ADD
1.1       anton    1042: d2 = dnegate(d1);
                   1043: #else
                   1044: d2 = -d1;
                   1045: #endif
                   1046: :
                   1047:  invert swap negate tuck 0= - ;
                   1048: 
1.47      anton    1049: d2*    ( d1 -- d2 )            double          d_two_star
1.52      anton    1050: ""Shift left by 1; also works on unsigned numbers""
1.158     pazsan   1051: #ifdef BUGGY_LL_SHIFT
                   1052: DLO_IS(d2, DLO(d1)<<1);
                   1053: DHI_IS(d2, (DHI(d1)<<1) | (DLO(d1)>>(CELL_BITS-1)));
1.1       anton    1054: #else
                   1055: d2 = 2*d1;
                   1056: #endif
                   1057: :
                   1058:  2dup d+ ;
                   1059: 
1.47      anton    1060: d2/    ( d1 -- d2 )            double          d_two_slash
1.52      anton    1061: ""Arithmetic shift right by 1.  For signed numbers this is a floored
                   1062: division by 2.""
1.158     pazsan   1063: #ifdef BUGGY_LL_SHIFT
                   1064: DHI_IS(d2, DHI(d1)>>1);
                   1065: DLO_IS(d2, (DLO(d1)>>1) | (DHI(d1)<<(CELL_BITS-1)));
1.1       anton    1066: #else
                   1067: d2 = d1>>1;
                   1068: #endif
                   1069: :
                   1070:  dup 1 and >r 2/ swap 2/ [ 1 8 cells 1- lshift 1- ] Literal and
                   1071:  r> IF  [ 1 8 cells 1- lshift ] Literal + THEN  swap ;
                   1072: 
1.47      anton    1073: and    ( w1 w2 -- w )          core
1.1       anton    1074: w = w1&w2;
                   1075: 
1.47      anton    1076: or     ( w1 w2 -- w )          core
1.1       anton    1077: w = w1|w2;
                   1078: :
                   1079:  invert swap invert and invert ;
                   1080: 
1.47      anton    1081: xor    ( w1 w2 -- w )          core    x_or
1.1       anton    1082: w = w1^w2;
                   1083: 
1.47      anton    1084: invert ( w1 -- w2 )            core
1.1       anton    1085: w2 = ~w1;
                   1086: :
                   1087:  MAXU xor ;
                   1088: 
1.47      anton    1089: rshift ( u1 n -- u2 )          core    r_shift
1.53      anton    1090: ""Logical shift right by @i{n} bits.""
1.154     pazsan   1091: #ifdef BROKEN_SHIFT
                   1092:   u2 = rshift(u1, n);
                   1093: #else
                   1094:   u2 = u1 >> n;
                   1095: #endif
1.1       anton    1096: :
                   1097:     0 ?DO 2/ MAXI and LOOP ;
                   1098: 
1.47      anton    1099: lshift ( u1 n -- u2 )          core    l_shift
1.154     pazsan   1100: #ifdef BROKEN_SHIFT
                   1101:   u2 = lshift(u1, n);
                   1102: #else
                   1103:   u2 = u1 << n;
                   1104: #endif
1.1       anton    1105: :
                   1106:     0 ?DO 2* LOOP ;
                   1107: 
1.110     pazsan   1108: \g compare
                   1109: 
1.1       anton    1110: \ comparisons(prefix, args, prefix, arg1, arg2, wordsets...)
                   1111: define(comparisons,
1.47      anton    1112: $1=    ( $2 -- f )             $6      $3equals
1.1       anton    1113: f = FLAG($4==$5);
                   1114: :
                   1115:     [ char $1x char 0 = [IF]
                   1116:        ] IF false ELSE true THEN [
                   1117:     [ELSE]
                   1118:        ] xor 0= [
                   1119:     [THEN] ] ;
                   1120: 
1.47      anton    1121: $1<>   ( $2 -- f )             $7      $3not_equals
1.1       anton    1122: f = FLAG($4!=$5);
                   1123: :
                   1124:     [ char $1x char 0 = [IF]
                   1125:        ] IF true ELSE false THEN [
                   1126:     [ELSE]
                   1127:        ] xor 0<> [
                   1128:     [THEN] ] ;
                   1129: 
1.47      anton    1130: $1<    ( $2 -- f )             $8      $3less_than
1.1       anton    1131: f = FLAG($4<$5);
                   1132: :
                   1133:     [ char $1x char 0 = [IF]
                   1134:        ] MINI and 0<> [
                   1135:     [ELSE] char $1x char u = [IF]
                   1136:        ]   2dup xor 0<  IF nip ELSE - THEN 0<  [
                   1137:        [ELSE]
                   1138:            ] MINI xor >r MINI xor r> u< [
                   1139:        [THEN]
                   1140:     [THEN] ] ;
                   1141: 
1.47      anton    1142: $1>    ( $2 -- f )             $9      $3greater_than
1.1       anton    1143: f = FLAG($4>$5);
                   1144: :
                   1145:     [ char $1x char 0 = [IF] ] negate [ [ELSE] ] swap [ [THEN] ]
                   1146:     $1< ;
                   1147: 
1.47      anton    1148: $1<=   ( $2 -- f )             gforth  $3less_or_equal
1.1       anton    1149: f = FLAG($4<=$5);
                   1150: :
                   1151:     $1> 0= ;
                   1152: 
1.47      anton    1153: $1>=   ( $2 -- f )             gforth  $3greater_or_equal
1.1       anton    1154: f = FLAG($4>=$5);
                   1155: :
                   1156:     [ char $1x char 0 = [IF] ] negate [ [ELSE] ] swap [ [THEN] ]
                   1157:     $1<= ;
                   1158: 
                   1159: )
                   1160: 
                   1161: comparisons(0, n, zero_, n, 0, core, core-ext, core, core-ext)
                   1162: comparisons(, n1 n2, , n1, n2, core, core-ext, core, core)
                   1163: comparisons(u, u1 u2, u_, u1, u2, gforth, gforth, core, core-ext)
                   1164: 
                   1165: \ dcomparisons(prefix, args, prefix, arg1, arg2, wordsets...)
                   1166: define(dcomparisons,
1.47      anton    1167: $1=    ( $2 -- f )             $6      $3equals
1.158     pazsan   1168: #ifdef BUGGY_LL_CMP
1.1       anton    1169: f = FLAG($4.lo==$5.lo && $4.hi==$5.hi);
                   1170: #else
                   1171: f = FLAG($4==$5);
                   1172: #endif
                   1173: 
1.47      anton    1174: $1<>   ( $2 -- f )             $7      $3not_equals
1.158     pazsan   1175: #ifdef BUGGY_LL_CMP
1.1       anton    1176: f = FLAG($4.lo!=$5.lo || $4.hi!=$5.hi);
                   1177: #else
                   1178: f = FLAG($4!=$5);
                   1179: #endif
                   1180: 
1.47      anton    1181: $1<    ( $2 -- f )             $8      $3less_than
1.158     pazsan   1182: #ifdef BUGGY_LL_CMP
1.1       anton    1183: f = FLAG($4.hi==$5.hi ? $4.lo<$5.lo : $4.hi<$5.hi);
                   1184: #else
                   1185: f = FLAG($4<$5);
                   1186: #endif
                   1187: 
1.47      anton    1188: $1>    ( $2 -- f )             $9      $3greater_than
1.158     pazsan   1189: #ifdef BUGGY_LL_CMP
1.1       anton    1190: f = FLAG($4.hi==$5.hi ? $4.lo>$5.lo : $4.hi>$5.hi);
                   1191: #else
                   1192: f = FLAG($4>$5);
                   1193: #endif
                   1194: 
1.47      anton    1195: $1<=   ( $2 -- f )             gforth  $3less_or_equal
1.158     pazsan   1196: #ifdef BUGGY_LL_CMP
1.1       anton    1197: f = FLAG($4.hi==$5.hi ? $4.lo<=$5.lo : $4.hi<=$5.hi);
                   1198: #else
                   1199: f = FLAG($4<=$5);
                   1200: #endif
                   1201: 
1.47      anton    1202: $1>=   ( $2 -- f )             gforth  $3greater_or_equal
1.158     pazsan   1203: #ifdef BUGGY_LL_CMP
1.1       anton    1204: f = FLAG($4.hi==$5.hi ? $4.lo>=$5.lo : $4.hi>=$5.hi);
                   1205: #else
                   1206: f = FLAG($4>=$5);
                   1207: #endif
                   1208: 
                   1209: )
                   1210: 
1.15      pazsan   1211: \+dcomps
1.1       anton    1212: 
                   1213: dcomparisons(d, d1 d2, d_, d1, d2, double, gforth, double, gforth)
                   1214: dcomparisons(d0, d, d_zero_, d, DZERO, double, gforth, double, gforth)
                   1215: dcomparisons(du, ud1 ud2, d_u_, ud1, ud2, gforth, gforth, double-ext, gforth)
                   1216: 
1.15      pazsan   1217: \+
1.1       anton    1218: 
1.47      anton    1219: within ( u1 u2 u3 -- f )               core-ext
1.32      anton    1220: ""u2=<u1<u3 or: u3=<u2 and u1 is not in [u3,u2).  This works for
                   1221: unsigned and signed numbers (but not a mixture).  Another way to think
                   1222: about this word is to consider the numbers as a circle (wrapping
                   1223: around from @code{max-u} to 0 for unsigned, and from @code{max-n} to
                   1224: min-n for signed numbers); now consider the range from u2 towards
                   1225: increasing numbers up to and excluding u3 (giving an empty range if
1.52      anton    1226: u2=u3); if u1 is in this range, @code{within} returns true.""
1.1       anton    1227: f = FLAG(u1-u2 < u3-u2);
                   1228: :
                   1229:  over - >r - r> u< ;
                   1230: 
1.112     pazsan   1231: \g stack
                   1232: 
                   1233: useraddr       ( #u -- a_addr )        new
                   1234: a_addr = (Cell *)(up+u);
                   1235: 
                   1236: up!    ( a_addr -- )   gforth  up_store
                   1237: UP=up=(char *)a_addr;
                   1238: :
                   1239:  up ! ;
                   1240: Variable UP
                   1241: 
1.47      anton    1242: sp@    ( -- a_addr )           gforth          sp_fetch
1.1       anton    1243: a_addr = sp+1;
                   1244: 
1.47      anton    1245: sp!    ( a_addr -- )           gforth          sp_store
1.1       anton    1246: sp = a_addr;
1.64      anton    1247: /* works with and without spTOS caching */
1.1       anton    1248: 
1.47      anton    1249: rp@    ( -- a_addr )           gforth          rp_fetch
1.1       anton    1250: a_addr = rp;
                   1251: 
1.47      anton    1252: rp!    ( a_addr -- )           gforth          rp_store
1.1       anton    1253: rp = a_addr;
                   1254: 
1.15      pazsan   1255: \+floating
1.1       anton    1256: 
1.47      anton    1257: fp@    ( -- f_addr )   gforth  fp_fetch
1.1       anton    1258: f_addr = fp;
                   1259: 
1.47      anton    1260: fp!    ( f_addr -- )   gforth  fp_store
1.1       anton    1261: fp = f_addr;
                   1262: 
1.15      pazsan   1263: \+
1.1       anton    1264: 
1.65      anton    1265: >r     ( w -- R:w )            core    to_r
1.1       anton    1266: :
                   1267:  (>r) ;
                   1268: : (>r)  rp@ cell+ @ rp@ ! rp@ cell+ ! ;
                   1269: 
1.65      anton    1270: r>     ( R:w -- w )            core    r_from
1.1       anton    1271: :
                   1272:  rp@ cell+ @ rp@ @ rp@ cell+ ! (rdrop) rp@ ! ;
                   1273: Create (rdrop) ' ;s A,
                   1274: 
1.65      anton    1275: rdrop  ( R:w -- )              gforth
1.1       anton    1276: :
                   1277:  r> r> drop >r ;
                   1278: 
1.136     pazsan   1279: 2>r    ( d -- R:d )    core-ext        two_to_r
1.1       anton    1280: :
                   1281:  swap r> swap >r swap >r >r ;
                   1282: 
1.136     pazsan   1283: 2r>    ( R:d -- d )    core-ext        two_r_from
1.1       anton    1284: :
                   1285:  r> r> swap r> swap >r swap ;
                   1286: 
1.136     pazsan   1287: 2r@    ( R:d -- R:d d )        core-ext        two_r_fetch
1.1       anton    1288: :
                   1289:  i' j ;
                   1290: 
1.136     pazsan   1291: 2rdrop ( R:d -- )              gforth  two_r_drop
1.1       anton    1292: :
                   1293:  r> r> drop r> drop >r ;
                   1294: 
1.47      anton    1295: over   ( w1 w2 -- w1 w2 w1 )           core
1.1       anton    1296: :
                   1297:  sp@ cell+ @ ;
                   1298: 
1.47      anton    1299: drop   ( w -- )                core
1.1       anton    1300: :
                   1301:  IF THEN ;
                   1302: 
1.47      anton    1303: swap   ( w1 w2 -- w2 w1 )              core
1.1       anton    1304: :
                   1305:  >r (swap) ! r> (swap) @ ;
                   1306: Variable (swap)
                   1307: 
1.47      anton    1308: dup    ( w -- w w )            core    dupe
1.1       anton    1309: :
                   1310:  sp@ @ ;
                   1311: 
1.47      anton    1312: rot    ( w1 w2 w3 -- w2 w3 w1 )        core    rote
1.1       anton    1313: :
                   1314: [ defined? (swap) [IF] ]
                   1315:     (swap) ! (rot) ! >r (rot) @ (swap) @ r> ;
                   1316: Variable (rot)
                   1317: [ELSE] ]
                   1318:     >r swap r> swap ;
                   1319: [THEN]
                   1320: 
1.47      anton    1321: -rot   ( w1 w2 w3 -- w3 w1 w2 )        gforth  not_rote
1.1       anton    1322: :
                   1323:  rot rot ;
                   1324: 
1.47      anton    1325: nip    ( w1 w2 -- w2 )         core-ext
1.1       anton    1326: :
1.6       jwilke   1327:  swap drop ;
1.1       anton    1328: 
1.47      anton    1329: tuck   ( w1 w2 -- w2 w1 w2 )   core-ext
1.1       anton    1330: :
                   1331:  swap over ;
                   1332: 
1.47      anton    1333: ?dup   ( w -- w )                      core    question_dupe
1.52      anton    1334: ""Actually the stack effect is: @code{( w -- 0 | w w )}.  It performs a
                   1335: @code{dup} if w is nonzero.""
1.1       anton    1336: if (w!=0) {
1.64      anton    1337:   IF_spTOS(*sp-- = w;)
1.1       anton    1338: #ifndef USE_TOS
                   1339:   *--sp = w;
                   1340: #endif
                   1341: }
                   1342: :
                   1343:  dup IF dup THEN ;
                   1344: 
1.47      anton    1345: pick   ( u -- w )                      core-ext
1.52      anton    1346: ""Actually the stack effect is @code{ x0 ... xu u -- x0 ... xu x0 }.""
1.1       anton    1347: w = sp[u+1];
                   1348: :
                   1349:  1+ cells sp@ + @ ;
                   1350: 
1.47      anton    1351: 2drop  ( w1 w2 -- )            core    two_drop
1.1       anton    1352: :
                   1353:  drop drop ;
                   1354: 
1.47      anton    1355: 2dup   ( w1 w2 -- w1 w2 w1 w2 )        core    two_dupe
1.1       anton    1356: :
                   1357:  over over ;
                   1358: 
1.47      anton    1359: 2over  ( w1 w2 w3 w4 -- w1 w2 w3 w4 w1 w2 )    core    two_over
1.1       anton    1360: :
                   1361:  3 pick 3 pick ;
                   1362: 
1.47      anton    1363: 2swap  ( w1 w2 w3 w4 -- w3 w4 w1 w2 )  core    two_swap
1.1       anton    1364: :
                   1365:  rot >r rot r> ;
                   1366: 
1.47      anton    1367: 2rot   ( w1 w2 w3 w4 w5 w6 -- w3 w4 w5 w6 w1 w2 )      double-ext      two_rote
1.1       anton    1368: :
                   1369:  >r >r 2swap r> r> 2swap ;
                   1370: 
1.47      anton    1371: 2nip   ( w1 w2 w3 w4 -- w3 w4 )        gforth  two_nip
1.1       anton    1372: :
                   1373:  2swap 2drop ;
                   1374: 
1.47      anton    1375: 2tuck  ( w1 w2 w3 w4 -- w3 w4 w1 w2 w3 w4 )    gforth  two_tuck
1.1       anton    1376: :
                   1377:  2swap 2over ;
                   1378: 
                   1379: \ toggle is high-level: 0.11/0.42%
                   1380: 
1.110     pazsan   1381: \g memory
                   1382: 
1.47      anton    1383: @      ( a_addr -- w )         core    fetch
1.52      anton    1384: ""@i{w} is the cell stored at @i{a_addr}.""
1.1       anton    1385: w = *a_addr;
                   1386: 
1.112     pazsan   1387: \ lit@ / lit_fetch = lit @
                   1388: 
                   1389: lit@           ( #a_addr -- w ) new    lit_fetch
                   1390: w = *a_addr;
                   1391: 
1.47      anton    1392: !      ( w a_addr -- )         core    store
1.52      anton    1393: ""Store @i{w} into the cell at @i{a-addr}.""
1.1       anton    1394: *a_addr = w;
                   1395: 
1.47      anton    1396: +!     ( n a_addr -- )         core    plus_store
1.52      anton    1397: ""Add @i{n} to the cell at @i{a-addr}.""
1.1       anton    1398: *a_addr += n;
                   1399: :
                   1400:  tuck @ + swap ! ;
                   1401: 
1.47      anton    1402: c@     ( c_addr -- c )         core    c_fetch
1.52      anton    1403: ""@i{c} is the char stored at @i{c_addr}.""
1.1       anton    1404: c = *c_addr;
                   1405: :
                   1406: [ bigendian [IF] ]
                   1407:     [ cell>bit 4 = [IF] ]
                   1408:        dup [ 0 cell - ] Literal and @ swap 1 and
                   1409:        IF  $FF and  ELSE  8>>  THEN  ;
                   1410:     [ [ELSE] ]
                   1411:        dup [ cell 1- ] literal and
                   1412:        tuck - @ swap [ cell 1- ] literal xor
                   1413:        0 ?DO 8>> LOOP $FF and
                   1414:     [ [THEN] ]
                   1415: [ [ELSE] ]
                   1416:     [ cell>bit 4 = [IF] ]
                   1417:        dup [ 0 cell - ] Literal and @ swap 1 and
                   1418:        IF  8>>  ELSE  $FF and  THEN
                   1419:     [ [ELSE] ]
                   1420:        dup [ cell  1- ] literal and 
                   1421:        tuck - @ swap
                   1422:        0 ?DO 8>> LOOP 255 and
                   1423:     [ [THEN] ]
                   1424: [ [THEN] ]
                   1425: ;
                   1426: : 8>> 2/ 2/ 2/ 2/  2/ 2/ 2/ 2/ ;
                   1427: 
1.47      anton    1428: c!     ( c c_addr -- )         core    c_store
1.52      anton    1429: ""Store @i{c} into the char at @i{c-addr}.""
1.1       anton    1430: *c_addr = c;
                   1431: :
                   1432: [ bigendian [IF] ]
                   1433:     [ cell>bit 4 = [IF] ]
                   1434:        tuck 1 and IF  $FF and  ELSE  8<<  THEN >r
                   1435:        dup -2 and @ over 1 and cells masks + @ and
                   1436:        r> or swap -2 and ! ;
                   1437:        Create masks $00FF , $FF00 ,
                   1438:     [ELSE] ]
                   1439:        dup [ cell 1- ] literal and dup 
                   1440:        [ cell 1- ] literal xor >r
                   1441:        - dup @ $FF r@ 0 ?DO 8<< LOOP invert and
                   1442:        rot $FF and r> 0 ?DO 8<< LOOP or swap ! ;
                   1443:     [THEN]
                   1444: [ELSE] ]
                   1445:     [ cell>bit 4 = [IF] ]
                   1446:        tuck 1 and IF  8<<  ELSE  $FF and  THEN >r
                   1447:        dup -2 and @ over 1 and cells masks + @ and
                   1448:        r> or swap -2 and ! ;
                   1449:        Create masks $FF00 , $00FF ,
                   1450:     [ELSE] ]
                   1451:        dup [ cell 1- ] literal and dup >r
                   1452:        - dup @ $FF r@ 0 ?DO 8<< LOOP invert and
                   1453:        rot $FF and r> 0 ?DO 8<< LOOP or swap ! ;
                   1454:     [THEN]
                   1455: [THEN]
                   1456: : 8<< 2* 2* 2* 2*  2* 2* 2* 2* ;
                   1457: 
1.47      anton    1458: 2!     ( w1 w2 a_addr -- )             core    two_store
1.52      anton    1459: ""Store @i{w2} into the cell at @i{c-addr} and @i{w1} into the next cell.""
1.1       anton    1460: a_addr[0] = w2;
                   1461: a_addr[1] = w1;
                   1462: :
                   1463:  tuck ! cell+ ! ;
                   1464: 
1.47      anton    1465: 2@     ( a_addr -- w1 w2 )             core    two_fetch
1.52      anton    1466: ""@i{w2} is the content of the cell stored at @i{a-addr}, @i{w1} is
                   1467: the content of the next cell.""
1.1       anton    1468: w2 = a_addr[0];
                   1469: w1 = a_addr[1];
                   1470: :
                   1471:  dup cell+ @ swap @ ;
                   1472: 
1.47      anton    1473: cell+  ( a_addr1 -- a_addr2 )  core    cell_plus
1.52      anton    1474: ""@code{1 cells +}""
1.1       anton    1475: a_addr2 = a_addr1+1;
                   1476: :
                   1477:  cell + ;
                   1478: 
1.47      anton    1479: cells  ( n1 -- n2 )            core
1.52      anton    1480: "" @i{n2} is the number of address units of @i{n1} cells.""
1.1       anton    1481: n2 = n1 * sizeof(Cell);
                   1482: :
                   1483:  [ cell
                   1484:  2/ dup [IF] ] 2* [ [THEN]
                   1485:  2/ dup [IF] ] 2* [ [THEN]
                   1486:  2/ dup [IF] ] 2* [ [THEN]
                   1487:  2/ dup [IF] ] 2* [ [THEN]
                   1488:  drop ] ;
                   1489: 
1.47      anton    1490: char+  ( c_addr1 -- c_addr2 )  core    char_plus
1.52      anton    1491: ""@code{1 chars +}.""
1.1       anton    1492: c_addr2 = c_addr1 + 1;
                   1493: :
                   1494:  1+ ;
                   1495: 
1.47      anton    1496: (chars)        ( n1 -- n2 )    gforth  paren_chars
1.1       anton    1497: n2 = n1 * sizeof(Char);
                   1498: :
                   1499:  ;
                   1500: 
1.47      anton    1501: count  ( c_addr1 -- c_addr2 u )        core
1.56      anton    1502: ""@i{c-addr2} is the first character and @i{u} the length of the
                   1503: counted string at @i{c-addr1}.""
1.1       anton    1504: u = *c_addr1;
                   1505: c_addr2 = c_addr1+1;
                   1506: :
                   1507:  dup 1+ swap c@ ;
                   1508: 
1.110     pazsan   1509: \g compiler
                   1510: 
1.138     pazsan   1511: \+f83headerstring
                   1512: 
                   1513: (f83find)      ( c_addr u f83name1 -- f83name2 )       new     paren_f83find
                   1514: for (; f83name1 != NULL; f83name1 = (struct F83Name *)(f83name1->next))
                   1515:   if ((UCell)F83NAME_COUNT(f83name1)==u &&
                   1516:       memcasecmp(c_addr, f83name1->name, u)== 0 /* or inline? */)
                   1517:     break;
                   1518: f83name2=f83name1;
                   1519: :
                   1520:     BEGIN  dup WHILE  (find-samelen)  dup  WHILE
                   1521:        >r 2dup r@ cell+ char+ capscomp  0=
                   1522:        IF  2drop r>  EXIT  THEN
                   1523:        r> @
                   1524:     REPEAT  THEN  nip nip ;
                   1525: : (find-samelen) ( u f83name1 -- u f83name2/0 )
                   1526:     BEGIN  2dup cell+ c@ $1F and <> WHILE  @  dup 0= UNTIL  THEN ;
                   1527: : capscomp ( c_addr1 u c_addr2 -- n )
                   1528:  swap bounds
                   1529:  ?DO  dup c@ I c@ <>
                   1530:      IF  dup c@ toupper I c@ toupper =
                   1531:      ELSE  true  THEN  WHILE  1+  LOOP  drop 0
                   1532:  ELSE  c@ toupper I c@ toupper - unloop  THEN  sgn ;
                   1533: : sgn ( n -- -1/0/1 )
                   1534:  dup 0= IF EXIT THEN  0< 2* 1+ ;
                   1535: 
                   1536: \-
                   1537: 
1.112     pazsan   1538: (listlfind)    ( c_addr u longname1 -- longname2 )     new     paren_listlfind
1.125     anton    1539: longname2=listlfind(c_addr, u, longname1);
1.1       anton    1540: :
1.112     pazsan   1541:     BEGIN  dup WHILE  (findl-samelen)  dup  WHILE
                   1542:        >r 2dup r@ cell+ cell+ capscomp  0=
1.1       anton    1543:        IF  2drop r>  EXIT  THEN
                   1544:        r> @
                   1545:     REPEAT  THEN  nip nip ;
1.112     pazsan   1546: : (findl-samelen) ( u longname1 -- u longname2/0 )
                   1547:     BEGIN  2dup cell+ @ lcount-mask and <> WHILE  @  dup 0= UNTIL  THEN ;
1.144     pazsan   1548: : capscomp ( c_addr1 u c_addr2 -- n )
                   1549:  swap bounds
                   1550:  ?DO  dup c@ I c@ <>
                   1551:      IF  dup c@ toupper I c@ toupper =
                   1552:      ELSE  true  THEN  WHILE  1+  LOOP  drop 0
                   1553:  ELSE  c@ toupper I c@ toupper - unloop  THEN  sgn ;
                   1554: : sgn ( n -- -1/0/1 )
                   1555:  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton    1556: 
1.15      pazsan   1557: \+hash
1.1       anton    1558: 
1.112     pazsan   1559: (hashlfind)    ( c_addr u a_addr -- longname2 )        new     paren_hashlfind
1.125     anton    1560: longname2 = hashlfind(c_addr, u, a_addr);
1.1       anton    1561: :
                   1562:  BEGIN  dup  WHILE
1.112     pazsan   1563:         2@ >r >r dup r@ cell+ @ lcount-mask and =
                   1564:         IF  2dup r@ cell+ cell+ capscomp 0=
1.1       anton    1565:            IF  2drop r> rdrop  EXIT  THEN  THEN
                   1566:        rdrop r>
                   1567:  REPEAT nip nip ;
                   1568: 
1.112     pazsan   1569: (tablelfind)   ( c_addr u a_addr -- longname2 )        new     paren_tablelfind
1.1       anton    1570: ""A case-sensitive variant of @code{(hashfind)}""
1.125     anton    1571: longname2 = tablelfind(c_addr, u, a_addr);
1.1       anton    1572: :
                   1573:  BEGIN  dup  WHILE
1.112     pazsan   1574:         2@ >r >r dup r@ cell+ @ lcount-mask and =
                   1575:         IF  2dup r@ cell+ cell+ -text 0=
1.1       anton    1576:            IF  2drop r> rdrop  EXIT  THEN  THEN
                   1577:        rdrop r>
                   1578:  REPEAT nip nip ;
1.138     pazsan   1579: : -text ( c_addr1 u c_addr2 -- n )
                   1580:  swap bounds
                   1581:  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                   1582:  ELSE  c@ I c@ - unloop  THEN  sgn ;
                   1583: : sgn ( n -- -1/0/1 )
                   1584:  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton    1585: 
1.47      anton    1586: (hashkey1)     ( c_addr u ubits -- ukey )              gforth  paren_hashkey1
1.1       anton    1587: ""ukey is the hash key for the string c_addr u fitting in ubits bits""
1.125     anton    1588: ukey = hashkey1(c_addr, u, ubits);
1.1       anton    1589: :
                   1590:  dup rot-values + c@ over 1 swap lshift 1- >r
                   1591:  tuck - 2swap r> 0 2swap bounds
                   1592:  ?DO  dup 4 pick lshift swap 3 pick rshift or
                   1593:       I c@ toupper xor
                   1594:       over and  LOOP
                   1595:  nip nip nip ;
                   1596: Create rot-values
                   1597:   5 c, 0 c, 1 c, 2 c, 3 c,  4 c, 5 c, 5 c, 5 c, 5 c,
                   1598:   3 c, 5 c, 5 c, 5 c, 5 c,  7 c, 5 c, 5 c, 5 c, 5 c,
                   1599:   7 c, 5 c, 5 c, 5 c, 5 c,  6 c, 5 c, 5 c, 5 c, 5 c,
                   1600:   7 c, 5 c, 5 c,
1.138     pazsan   1601: 
                   1602: \+
1.1       anton    1603: 
1.15      pazsan   1604: \+
1.1       anton    1605: 
1.47      anton    1606: (parse-white)  ( c_addr1 u1 -- c_addr2 u2 )    gforth  paren_parse_white
1.125     anton    1607: struct Cellpair r=parse_white(c_addr1, u1);
                   1608: c_addr2 = (Char *)(r.n1);
                   1609: u2 = r.n2;
1.1       anton    1610: :
                   1611:  BEGIN  dup  WHILE  over c@ bl <=  WHILE  1 /string
                   1612:  REPEAT  THEN  2dup
                   1613:  BEGIN  dup  WHILE  over c@ bl >   WHILE  1 /string
                   1614:  REPEAT  THEN  nip - ;
                   1615: 
1.47      anton    1616: aligned        ( c_addr -- a_addr )    core
1.29      crook    1617: "" @i{a-addr} is the first aligned address greater than or equal to @i{c-addr}.""
1.1       anton    1618: a_addr = (Cell *)((((Cell)c_addr)+(sizeof(Cell)-1))&(-sizeof(Cell)));
                   1619: :
                   1620:  [ cell 1- ] Literal + [ -1 cells ] Literal and ;
                   1621: 
1.47      anton    1622: faligned       ( c_addr -- f_addr )    float   f_aligned
1.29      crook    1623: "" @i{f-addr} is the first float-aligned address greater than or equal to @i{c-addr}.""
1.1       anton    1624: f_addr = (Float *)((((Cell)c_addr)+(sizeof(Float)-1))&(-sizeof(Float)));
                   1625: :
                   1626:  [ 1 floats 1- ] Literal + [ -1 floats ] Literal and ;
                   1627: 
1.35      jwilke   1628: \ threading stuff is currently only interesting if we have a compiler
                   1629: \fhas? standardthreading has? compiler and [IF]
1.47      anton    1630: threading-method       ( -- n )        gforth  threading_method
1.1       anton    1631: ""0 if the engine is direct threaded. Note that this may change during
                   1632: the lifetime of an image.""
                   1633: #if defined(DOUBLY_INDIRECT)
                   1634: n=2;
                   1635: #else
                   1636: # if defined(DIRECT_THREADED)
                   1637: n=0;
                   1638: # else
                   1639: n=1;
                   1640: # endif
                   1641: #endif
                   1642: :
                   1643:  1 ;
1.28      jwilke   1644: 
1.35      jwilke   1645: \f[THEN]
1.1       anton    1646: 
1.83      pazsan   1647: \g hostos
                   1648: 
1.47      anton    1649: key-file       ( wfileid -- n )                gforth  paren_key_file
1.17      pazsan   1650: #ifdef HAS_FILE
1.1       anton    1651: fflush(stdout);
1.12      pazsan   1652: n = key((FILE*)wfileid);
1.17      pazsan   1653: #else
                   1654: n = key(stdin);
                   1655: #endif
1.1       anton    1656: 
1.47      anton    1657: key?-file      ( wfileid -- n )                facility        key_q_file
1.17      pazsan   1658: #ifdef HAS_FILE
1.1       anton    1659: fflush(stdout);
1.12      pazsan   1660: n = key_query((FILE*)wfileid);
1.17      pazsan   1661: #else
                   1662: n = key_query(stdin);
                   1663: #endif
                   1664: 
                   1665: \+os
1.12      pazsan   1666: 
1.47      anton    1667: stdin  ( -- wfileid )  gforth
1.12      pazsan   1668: wfileid = (Cell)stdin;
1.1       anton    1669: 
1.47      anton    1670: stdout ( -- wfileid )  gforth
1.1       anton    1671: wfileid = (Cell)stdout;
                   1672: 
1.47      anton    1673: stderr ( -- wfileid )  gforth
1.1       anton    1674: wfileid = (Cell)stderr;
                   1675: 
1.47      anton    1676: form   ( -- urows ucols )      gforth
1.1       anton    1677: ""The number of lines and columns in the terminal. These numbers may change
                   1678: with the window size.""
                   1679: /* we could block SIGWINCH here to get a consistent size, but I don't
                   1680:  think this is necessary or always beneficial */
                   1681: urows=rows;
                   1682: ucols=cols;
                   1683: 
1.47      anton    1684: flush-icache   ( c_addr u -- ) gforth  flush_icache
1.1       anton    1685: ""Make sure that the instruction cache of the processor (if there is
1.29      crook    1686: one) does not contain stale data at @i{c-addr} and @i{u} bytes
1.1       anton    1687: afterwards. @code{END-CODE} performs a @code{flush-icache}
                   1688: automatically. Caveat: @code{flush-icache} might not work on your
                   1689: installation; this is usually the case if direct threading is not
                   1690: supported on your machine (take a look at your @file{machine.h}) and
                   1691: your machine has a separate instruction cache. In such cases,
                   1692: @code{flush-icache} does nothing instead of flushing the instruction
                   1693: cache.""
                   1694: FLUSH_ICACHE(c_addr,u);
                   1695: 
1.47      anton    1696: (bye)  ( n -- )        gforth  paren_bye
1.77      anton    1697: SUPER_END;
1.1       anton    1698: return (Label *)n;
                   1699: 
1.125     anton    1700: (system)       ( c_addr u -- wretval wior )    gforth  paren_system
1.155     anton    1701: wretval = gforth_system(c_addr, u);  
1.1       anton    1702: wior = IOR(wretval==-1 || (wretval==127 && errno != 0));
                   1703: 
1.47      anton    1704: getenv ( c_addr1 u1 -- c_addr2 u2 )    gforth
1.29      crook    1705: ""The string @i{c-addr1 u1} specifies an environment variable. The string @i{c-addr2 u2}
1.24      crook    1706: is the host operating system's expansion of that environment variable. If the
1.29      crook    1707: environment variable does not exist, @i{c-addr2 u2} specifies a string 0 characters
1.24      crook    1708: in length.""
1.46      pazsan   1709: /* close ' to keep fontify happy */
1.1       anton    1710: c_addr2 = getenv(cstr(c_addr1,u1,1));
                   1711: u2 = (c_addr2 == NULL ? 0 : strlen(c_addr2));
                   1712: 
1.56      anton    1713: open-pipe      ( c_addr u wfam -- wfileid wior )       gforth  open_pipe
1.84      pazsan   1714: wfileid=(Cell)popen(cstr(c_addr,u,1),pfileattr[wfam]); /* ~ expansion of 1st arg? */
1.1       anton    1715: wior = IOR(wfileid==0); /* !! the man page says that errno is not set reliably */
                   1716: 
1.47      anton    1717: close-pipe     ( wfileid -- wretval wior )             gforth  close_pipe
1.1       anton    1718: wretval = pclose((FILE *)wfileid);
                   1719: wior = IOR(wretval==-1);
                   1720: 
1.47      anton    1721: time&date      ( -- nsec nmin nhour nday nmonth nyear )        facility-ext    time_and_date
1.44      crook    1722: ""Report the current time of day. Seconds, minutes and hours are numbered from 0.
                   1723: Months are numbered from 1.""
1.127     anton    1724: #if 1
                   1725: time_t now;
                   1726: struct tm *ltime;
                   1727: time(&now);
                   1728: ltime=localtime(&now);
                   1729: #else
1.1       anton    1730: struct timeval time1;
                   1731: struct timezone zone1;
                   1732: struct tm *ltime;
                   1733: gettimeofday(&time1,&zone1);
1.51      anton    1734: /* !! Single Unix specification: 
                   1735:    If tzp is not a null pointer, the behaviour is unspecified. */
1.1       anton    1736: ltime=localtime((time_t *)&time1.tv_sec);
1.127     anton    1737: #endif
1.1       anton    1738: nyear =ltime->tm_year+1900;
                   1739: nmonth=ltime->tm_mon+1;
                   1740: nday  =ltime->tm_mday;
                   1741: nhour =ltime->tm_hour;
                   1742: nmin  =ltime->tm_min;
                   1743: nsec  =ltime->tm_sec;
                   1744: 
1.47      anton    1745: ms     ( n -- )        facility-ext
1.44      crook    1746: ""Wait at least @i{n} milli-second.""
1.1       anton    1747: struct timeval timeout;
                   1748: timeout.tv_sec=n/1000;
                   1749: timeout.tv_usec=1000*(n%1000);
                   1750: (void)select(0,0,0,0,&timeout);
                   1751: 
1.47      anton    1752: allocate       ( u -- a_addr wior )    memory
1.29      crook    1753: ""Allocate @i{u} address units of contiguous data space. The initial
1.27      crook    1754: contents of the data space is undefined. If the allocation is successful,
1.29      crook    1755: @i{a-addr} is the start address of the allocated region and @i{wior}
                   1756: is 0. If the allocation fails, @i{a-addr} is undefined and @i{wior}
1.52      anton    1757: is a non-zero I/O result code.""
1.1       anton    1758: a_addr = (Cell *)malloc(u?u:1);
                   1759: wior = IOR(a_addr==NULL);
                   1760: 
1.47      anton    1761: free   ( a_addr -- wior )              memory
1.29      crook    1762: ""Return the region of data space starting at @i{a-addr} to the system.
1.52      anton    1763: The region must originally have been obtained using @code{allocate} or
1.29      crook    1764: @code{resize}. If the operational is successful, @i{wior} is 0.
1.52      anton    1765: If the operation fails, @i{wior} is a non-zero I/O result code.""
1.1       anton    1766: free(a_addr);
                   1767: wior = 0;
                   1768: 
1.47      anton    1769: resize ( a_addr1 u -- a_addr2 wior )   memory
1.26      crook    1770: ""Change the size of the allocated area at @i{a-addr1} to @i{u}
1.1       anton    1771: address units, possibly moving the contents to a different
1.27      crook    1772: area. @i{a-addr2} is the address of the resulting area.
1.52      anton    1773: If the operation is successful, @i{wior} is 0.
                   1774: If the operation fails, @i{wior} is a non-zero
1.29      crook    1775: I/O result code. If @i{a-addr1} is 0, Gforth's (but not the Standard)
1.27      crook    1776: @code{resize} @code{allocate}s @i{u} address units.""
1.1       anton    1777: /* the following check is not necessary on most OSs, but it is needed
                   1778:    on SunOS 4.1.2. */
1.46      pazsan   1779: /* close ' to keep fontify happy */
1.1       anton    1780: if (a_addr1==NULL)
                   1781:   a_addr2 = (Cell *)malloc(u);
                   1782: else
                   1783:   a_addr2 = (Cell *)realloc(a_addr1, u);
                   1784: wior = IOR(a_addr2==NULL);     /* !! Define a return code */
                   1785: 
1.47      anton    1786: strerror       ( n -- c_addr u )       gforth
1.1       anton    1787: c_addr = strerror(n);
                   1788: u = strlen(c_addr);
                   1789: 
1.47      anton    1790: strsignal      ( n -- c_addr u )       gforth
1.133     anton    1791: c_addr = (Address)strsignal(n);
1.1       anton    1792: u = strlen(c_addr);
                   1793: 
1.47      anton    1794: call-c ( w -- )        gforth  call_c
1.1       anton    1795: ""Call the C function pointed to by @i{w}. The C function has to
                   1796: access the stack itself. The stack pointers are exported in the global
                   1797: variables @code{SP} and @code{FP}.""
                   1798: /* This is a first attempt at support for calls to C. This may change in
                   1799:    the future */
1.64      anton    1800: IF_fpTOS(fp[0]=fpTOS);
1.1       anton    1801: FP=fp;
                   1802: SP=sp;
                   1803: ((void (*)())w)();
                   1804: sp=SP;
                   1805: fp=FP;
1.64      anton    1806: IF_spTOS(spTOS=sp[0]);
                   1807: IF_fpTOS(fpTOS=fp[0]);
1.1       anton    1808: 
1.15      pazsan   1809: \+
                   1810: \+file
1.1       anton    1811: 
1.47      anton    1812: close-file     ( wfileid -- wior )             file    close_file
1.1       anton    1813: wior = IOR(fclose((FILE *)wfileid)==EOF);
                   1814: 
1.56      anton    1815: open-file      ( c_addr u wfam -- wfileid wior )       file    open_file
                   1816: wfileid = (Cell)fopen(tilde_cstr(c_addr, u, 1), fileattr[wfam]);
1.22      crook    1817: wior =  IOR(wfileid == 0);
1.1       anton    1818: 
1.56      anton    1819: create-file    ( c_addr u wfam -- wfileid wior )       file    create_file
1.1       anton    1820: Cell   fd;
1.56      anton    1821: fd = open(tilde_cstr(c_addr, u, 1), O_CREAT|O_TRUNC|ufileattr[wfam], 0666);
1.1       anton    1822: if (fd != -1) {
1.56      anton    1823:   wfileid = (Cell)fdopen(fd, fileattr[wfam]);
1.22      crook    1824:   wior = IOR(wfileid == 0);
1.1       anton    1825: } else {
1.22      crook    1826:   wfileid = 0;
1.1       anton    1827:   wior = IOR(1);
                   1828: }
                   1829: 
1.47      anton    1830: delete-file    ( c_addr u -- wior )            file    delete_file
1.1       anton    1831: wior = IOR(unlink(tilde_cstr(c_addr, u, 1))==-1);
                   1832: 
1.47      anton    1833: rename-file    ( c_addr1 u1 c_addr2 u2 -- wior )       file-ext        rename_file
1.29      crook    1834: ""Rename file @i{c_addr1 u1} to new name @i{c_addr2 u2}""
1.125     anton    1835: wior = rename_file(c_addr1, u1, c_addr2, u2);
1.1       anton    1836: 
1.47      anton    1837: file-position  ( wfileid -- ud wior )  file    file_position
1.1       anton    1838: /* !! use tell and lseek? */
1.108     anton    1839: ud = OFF2UD(ftello((FILE *)wfileid));
                   1840: wior = IOR(UD2OFF(ud)==-1);
1.1       anton    1841: 
1.47      anton    1842: reposition-file        ( ud wfileid -- wior )  file    reposition_file
1.108     anton    1843: wior = IOR(fseeko((FILE *)wfileid, UD2OFF(ud), SEEK_SET)==-1);
1.1       anton    1844: 
1.47      anton    1845: file-size      ( wfileid -- ud wior )  file    file_size
1.1       anton    1846: struct stat buf;
                   1847: wior = IOR(fstat(fileno((FILE *)wfileid), &buf)==-1);
1.108     anton    1848: ud = OFF2UD(buf.st_size);
1.1       anton    1849: 
1.47      anton    1850: resize-file    ( ud wfileid -- wior )  file    resize_file
1.108     anton    1851: wior = IOR(ftruncate(fileno((FILE *)wfileid), UD2OFF(ud))==-1);
1.1       anton    1852: 
1.47      anton    1853: read-file      ( c_addr u1 wfileid -- u2 wior )        file    read_file
1.1       anton    1854: /* !! fread does not guarantee enough */
                   1855: u2 = fread(c_addr, sizeof(Char), u1, (FILE *)wfileid);
                   1856: wior = FILEIO(u2<u1 && ferror((FILE *)wfileid));
                   1857: /* !! is the value of ferror errno-compatible? */
                   1858: if (wior)
                   1859:   clearerr((FILE *)wfileid);
                   1860: 
1.125     anton    1861: (read-line)    ( c_addr u1 wfileid -- u2 flag u3 wior ) file   paren_read_line
                   1862: struct Cellquad r = read_line(c_addr, u1, wfileid);
                   1863: u2   = r.n1;
                   1864: flag = r.n2;
                   1865: u3   = r.n3;
                   1866: wior = r.n4;
1.1       anton    1867: 
1.15      pazsan   1868: \+
1.1       anton    1869: 
1.47      anton    1870: write-file     ( c_addr u1 wfileid -- wior )   file    write_file
1.1       anton    1871: /* !! fwrite does not guarantee enough */
1.39      pazsan   1872: #ifdef HAS_FILE
1.1       anton    1873: {
                   1874:   UCell u2 = fwrite(c_addr, sizeof(Char), u1, (FILE *)wfileid);
                   1875:   wior = FILEIO(u2<u1 && ferror((FILE *)wfileid));
                   1876:   if (wior)
                   1877:     clearerr((FILE *)wfileid);
                   1878: }
1.39      pazsan   1879: #else
                   1880: TYPE(c_addr, u1);
                   1881: #endif
1.17      pazsan   1882: 
1.47      anton    1883: emit-file      ( c wfileid -- wior )   gforth  emit_file
1.17      pazsan   1884: #ifdef HAS_FILE
1.1       anton    1885: wior = FILEIO(putc(c, (FILE *)wfileid)==EOF);
                   1886: if (wior)
                   1887:   clearerr((FILE *)wfileid);
1.17      pazsan   1888: #else
1.36      pazsan   1889: PUTC(c);
1.17      pazsan   1890: #endif
1.1       anton    1891: 
1.15      pazsan   1892: \+file
1.1       anton    1893: 
1.47      anton    1894: flush-file     ( wfileid -- wior )             file-ext        flush_file
1.1       anton    1895: wior = IOR(fflush((FILE *) wfileid)==EOF);
                   1896: 
1.56      anton    1897: file-status    ( c_addr u -- wfam wior )       file-ext        file_status
1.125     anton    1898: struct Cellpair r = file_status(c_addr, u);
                   1899: wfam = r.n1;
                   1900: wior = r.n2;
1.1       anton    1901: 
1.112     pazsan   1902: file-eof?      ( wfileid -- flag )     gforth  file_eof_query
                   1903: flag = FLAG(feof((FILE *) wfileid));
1.1       anton    1904: 
1.112     pazsan   1905: open-dir       ( c_addr u -- wdirid wior )     gforth  open_dir
                   1906: ""Open the directory specified by @i{c-addr, u}
                   1907: and return @i{dir-id} for futher access to it.""
                   1908: wdirid = (Cell)opendir(tilde_cstr(c_addr, u, 1));
                   1909: wior =  IOR(wdirid == 0);
                   1910: 
                   1911: read-dir       ( c_addr u1 wdirid -- u2 flag wior )    gforth  read_dir
                   1912: ""Attempt to read the next entry from the directory specified
                   1913: by @i{dir-id} to the buffer of length @i{u1} at address @i{c-addr}. 
                   1914: If the attempt fails because there is no more entries,
                   1915: @i{ior}=0, @i{flag}=0, @i{u2}=0, and the buffer is unmodified.
                   1916: If the attempt to read the next entry fails because of any other reason, 
                   1917: return @i{ior}<>0.
                   1918: If the attempt succeeds, store file name to the buffer at @i{c-addr}
                   1919: and return @i{ior}=0, @i{flag}=true and @i{u2} equal to the size of the file name.
                   1920: If the length of the file name is greater than @i{u1}, 
                   1921: store first @i{u1} characters from file name into the buffer and
                   1922: indicate "name too long" with @i{ior}, @i{flag}=true, and @i{u2}=@i{u1}.""
                   1923: struct dirent * dent;
                   1924: dent = readdir((DIR *)wdirid);
                   1925: wior = 0;
                   1926: flag = -1;
                   1927: if(dent == NULL) {
                   1928:   u2 = 0;
                   1929:   flag = 0;
                   1930: } else {
                   1931:   u2 = strlen(dent->d_name);
                   1932:   if(u2 > u1) {
                   1933:     u2 = u1;
                   1934:     wior = -512-ENAMETOOLONG;
                   1935:   }
                   1936:   memmove(c_addr, dent->d_name, u2);
                   1937: }
                   1938: 
                   1939: close-dir      ( wdirid -- wior )      gforth  close_dir
                   1940: ""Close the directory specified by @i{dir-id}.""
                   1941: wior = IOR(closedir((DIR *)wdirid));
                   1942: 
                   1943: filename-match ( c_addr1 u1 c_addr2 u2 -- flag )       gforth  match_file
                   1944: char * string = cstr(c_addr1, u1, 1);
                   1945: char * pattern = cstr(c_addr2, u2, 0);
                   1946: flag = FLAG(!fnmatch(pattern, string, 0));
                   1947: 
1.157     pazsan   1948: set-dir        ( c_addr u -- wior )    gforth set_dir
                   1949: ""Change the current directory to @i{c-addr, u}.
                   1950: Return an error if this is not possible""
                   1951: wior = IOR(chdir(tilde_cstr(c_addr, u, 1)));
                   1952: 
                   1953: get-dir        ( c_addr1 u1 -- c_addr2 u2 )    gforth get_dir
                   1954: ""Store the current directory in the buffer specified by @{c-addr1, u1}.
                   1955: If the buffer size is not sufficient, return 0 0""
                   1956: c_addr2 = getcwd(c_addr1, u1);
                   1957: if(c_addr2 != NULL) {
                   1958:   u2 = strlen(c_addr2);
                   1959: } else {
                   1960:   u2 = 0;
                   1961: }
                   1962: 
1.112     pazsan   1963: \+
                   1964: 
                   1965: newline        ( -- c_addr u ) gforth
                   1966: ""String containing the newline sequence of the host OS""
                   1967: char newline[] = {
1.115     anton    1968: #if DIRSEP=='/'
                   1969: /* Unix */
1.112     pazsan   1970: '\n'
                   1971: #else
1.115     anton    1972: /* DOS, Win, OS/2 */
1.112     pazsan   1973: '\r','\n'
                   1974: #endif
                   1975: };
                   1976: c_addr=newline;
                   1977: u=sizeof(newline);
                   1978: :
                   1979:  "newline count ;
                   1980: Create "newline e? crlf [IF] 2 c, $0D c, [ELSE] 1 c, [THEN] $0A c,
                   1981: 
                   1982: \+os
                   1983: 
                   1984: utime  ( -- dtime )    gforth
                   1985: ""Report the current time in microseconds since some epoch.""
                   1986: struct timeval time1;
                   1987: gettimeofday(&time1,NULL);
                   1988: dtime = timeval2us(&time1);
                   1989: 
                   1990: cputime ( -- duser dsystem ) gforth
                   1991: ""duser and dsystem are the respective user- and system-level CPU
                   1992: times used since the start of the Forth system (excluding child
                   1993: processes), in microseconds (the granularity may be much larger,
                   1994: however).  On platforms without the getrusage call, it reports elapsed
                   1995: time (since some epoch) for duser and 0 for dsystem.""
                   1996: #ifdef HAVE_GETRUSAGE
                   1997: struct rusage usage;
                   1998: getrusage(RUSAGE_SELF, &usage);
                   1999: duser = timeval2us(&usage.ru_utime);
                   2000: dsystem = timeval2us(&usage.ru_stime);
                   2001: #else
                   2002: struct timeval time1;
                   2003: gettimeofday(&time1,NULL);
                   2004: duser = timeval2us(&time1);
1.158     pazsan   2005: dsystem = DZERO;
1.112     pazsan   2006: #endif
                   2007: 
                   2008: \+
                   2009: 
                   2010: \+floating
                   2011: 
                   2012: \g floating
1.83      pazsan   2013: 
1.1       anton    2014: comparisons(f, r1 r2, f_, r1, r2, gforth, gforth, float, gforth)
                   2015: comparisons(f0, r, f_zero_, r, 0., float, gforth, float, gforth)
                   2016: 
1.47      anton    2017: d>f    ( d -- r )              float   d_to_f
1.158     pazsan   2018: #ifdef BUGGY_LL_D2F
1.1       anton    2019: extern double ldexp(double x, int exp);
1.158     pazsan   2020: if (DHI(d)<0) {
                   2021: #ifdef BUGGY_LL_ADD
1.113     anton    2022:   DCell d2=dnegate(d);
1.158     pazsan   2023: #else
                   2024:   DCell d2=-d;
                   2025: #endif
                   2026:   r = -(ldexp((Float)DHI(d2),CELL_BITS) + (Float)DLO(d2));
1.113     anton    2027: } else
1.158     pazsan   2028:   r = ldexp((Float)DHI(d),CELL_BITS) + (Float)DLO(d);
1.1       anton    2029: #else
                   2030: r = d;
                   2031: #endif
                   2032: 
1.47      anton    2033: f>d    ( r -- d )              float   f_to_d
1.100     pazsan   2034: extern DCell double2ll(Float r);
                   2035: d = double2ll(r);
1.1       anton    2036: 
1.47      anton    2037: f!     ( r f_addr -- ) float   f_store
1.52      anton    2038: ""Store @i{r} into the float at address @i{f-addr}.""
1.1       anton    2039: *f_addr = r;
                   2040: 
1.47      anton    2041: f@     ( f_addr -- r ) float   f_fetch
1.52      anton    2042: ""@i{r} is the float at address @i{f-addr}.""
1.1       anton    2043: r = *f_addr;
                   2044: 
1.47      anton    2045: df@    ( df_addr -- r )        float-ext       d_f_fetch
1.52      anton    2046: ""Fetch the double-precision IEEE floating-point value @i{r} from the address @i{df-addr}.""
1.1       anton    2047: #ifdef IEEE_FP
                   2048: r = *df_addr;
                   2049: #else
                   2050: !! df@
                   2051: #endif
                   2052: 
1.47      anton    2053: df!    ( r df_addr -- )        float-ext       d_f_store
1.52      anton    2054: ""Store @i{r} as double-precision IEEE floating-point value to the
                   2055: address @i{df-addr}.""
1.1       anton    2056: #ifdef IEEE_FP
                   2057: *df_addr = r;
                   2058: #else
                   2059: !! df!
                   2060: #endif
                   2061: 
1.47      anton    2062: sf@    ( sf_addr -- r )        float-ext       s_f_fetch
1.52      anton    2063: ""Fetch the single-precision IEEE floating-point value @i{r} from the address @i{sf-addr}.""
1.1       anton    2064: #ifdef IEEE_FP
                   2065: r = *sf_addr;
                   2066: #else
                   2067: !! sf@
                   2068: #endif
                   2069: 
1.47      anton    2070: sf!    ( r sf_addr -- )        float-ext       s_f_store
1.52      anton    2071: ""Store @i{r} as single-precision IEEE floating-point value to the
                   2072: address @i{sf-addr}.""
1.1       anton    2073: #ifdef IEEE_FP
                   2074: *sf_addr = r;
                   2075: #else
                   2076: !! sf!
                   2077: #endif
                   2078: 
1.47      anton    2079: f+     ( r1 r2 -- r3 ) float   f_plus
1.1       anton    2080: r3 = r1+r2;
                   2081: 
1.47      anton    2082: f-     ( r1 r2 -- r3 ) float   f_minus
1.1       anton    2083: r3 = r1-r2;
                   2084: 
1.47      anton    2085: f*     ( r1 r2 -- r3 ) float   f_star
1.1       anton    2086: r3 = r1*r2;
                   2087: 
1.47      anton    2088: f/     ( r1 r2 -- r3 ) float   f_slash
1.1       anton    2089: r3 = r1/r2;
                   2090: 
1.47      anton    2091: f**    ( r1 r2 -- r3 ) float-ext       f_star_star
1.26      crook    2092: ""@i{r3} is @i{r1} raised to the @i{r2}th power.""
1.1       anton    2093: r3 = pow(r1,r2);
                   2094: 
1.47      anton    2095: fnegate        ( r1 -- r2 )    float   f_negate
1.1       anton    2096: r2 = - r1;
                   2097: 
1.47      anton    2098: fdrop  ( r -- )                float   f_drop
1.1       anton    2099: 
1.47      anton    2100: fdup   ( r -- r r )    float   f_dupe
1.1       anton    2101: 
1.47      anton    2102: fswap  ( r1 r2 -- r2 r1 )      float   f_swap
1.1       anton    2103: 
1.47      anton    2104: fover  ( r1 r2 -- r1 r2 r1 )   float   f_over
1.1       anton    2105: 
1.47      anton    2106: frot   ( r1 r2 r3 -- r2 r3 r1 )        float   f_rote
1.1       anton    2107: 
1.47      anton    2108: fnip   ( r1 r2 -- r2 ) gforth  f_nip
1.1       anton    2109: 
1.47      anton    2110: ftuck  ( r1 r2 -- r2 r1 r2 )   gforth  f_tuck
1.1       anton    2111: 
1.47      anton    2112: float+ ( f_addr1 -- f_addr2 )  float   float_plus
1.52      anton    2113: ""@code{1 floats +}.""
1.1       anton    2114: f_addr2 = f_addr1+1;
                   2115: 
1.47      anton    2116: floats ( n1 -- n2 )    float
1.52      anton    2117: ""@i{n2} is the number of address units of @i{n1} floats.""
1.1       anton    2118: n2 = n1*sizeof(Float);
                   2119: 
1.47      anton    2120: floor  ( r1 -- r2 )    float
1.26      crook    2121: ""Round towards the next smaller integral value, i.e., round toward negative infinity.""
1.1       anton    2122: /* !! unclear wording */
                   2123: r2 = floor(r1);
                   2124: 
1.105     anton    2125: fround ( r1 -- r2 )    gforth  f_round
                   2126: ""Round to the nearest integral value.""
1.1       anton    2127: r2 = rint(r1);
                   2128: 
1.47      anton    2129: fmax   ( r1 r2 -- r3 ) float   f_max
1.1       anton    2130: if (r1<r2)
                   2131:   r3 = r2;
                   2132: else
                   2133:   r3 = r1;
                   2134: 
1.47      anton    2135: fmin   ( r1 r2 -- r3 ) float   f_min
1.1       anton    2136: if (r1<r2)
                   2137:   r3 = r1;
                   2138: else
                   2139:   r3 = r2;
                   2140: 
1.47      anton    2141: represent      ( r c_addr u -- n f1 f2 )       float
1.1       anton    2142: char *sig;
1.122     anton    2143: size_t siglen;
1.1       anton    2144: int flag;
                   2145: int decpt;
                   2146: sig=ecvt(r, u, &decpt, &flag);
1.122     anton    2147: n=(r==0. ? 1 : decpt);
1.1       anton    2148: f1=FLAG(flag!=0);
1.21      anton    2149: f2=FLAG(isdigit((unsigned)(sig[0]))!=0);
1.122     anton    2150: siglen=strlen(sig);
1.124     anton    2151: if (siglen>u) /* happens in glibc-2.1.3 if 999.. is rounded up */
                   2152:   siglen=u;
1.122     anton    2153: memcpy(c_addr,sig,siglen);
1.123     anton    2154: memset(c_addr+siglen,f2?'0':' ',u-siglen);
1.1       anton    2155: 
1.47      anton    2156: >float ( c_addr u -- flag )    float   to_float
1.56      anton    2157: ""Actual stack effect: ( c_addr u -- r t | f ).  Attempt to convert the
                   2158: character string @i{c-addr u} to internal floating-point
                   2159: representation. If the string represents a valid floating-point number
                   2160: @i{r} is placed on the floating-point stack and @i{flag} is
                   2161: true. Otherwise, @i{flag} is false. A string of blanks is a special
                   2162: case and represents the floating-point number 0.""
1.1       anton    2163: Float r;
1.125     anton    2164: flag = to_float(c_addr, u, &r);
                   2165: if (flag) {
                   2166:   IF_fpTOS(fp[0] = fpTOS);
                   2167:   fp += -1;
                   2168:   fpTOS = r;
1.1       anton    2169: }
                   2170: 
1.47      anton    2171: fabs   ( r1 -- r2 )    float-ext       f_abs
1.1       anton    2172: r2 = fabs(r1);
                   2173: 
1.47      anton    2174: facos  ( r1 -- r2 )    float-ext       f_a_cos
1.1       anton    2175: r2 = acos(r1);
                   2176: 
1.47      anton    2177: fasin  ( r1 -- r2 )    float-ext       f_a_sine
1.1       anton    2178: r2 = asin(r1);
                   2179: 
1.47      anton    2180: fatan  ( r1 -- r2 )    float-ext       f_a_tan
1.1       anton    2181: r2 = atan(r1);
                   2182: 
1.47      anton    2183: fatan2 ( r1 r2 -- r3 ) float-ext       f_a_tan_two
1.26      crook    2184: ""@i{r1/r2}=tan(@i{r3}). ANS Forth does not require, but probably
1.1       anton    2185: intends this to be the inverse of @code{fsincos}. In gforth it is.""
                   2186: r3 = atan2(r1,r2);
                   2187: 
1.47      anton    2188: fcos   ( r1 -- r2 )    float-ext       f_cos
1.1       anton    2189: r2 = cos(r1);
                   2190: 
1.47      anton    2191: fexp   ( r1 -- r2 )    float-ext       f_e_x_p
1.1       anton    2192: r2 = exp(r1);
                   2193: 
1.47      anton    2194: fexpm1 ( r1 -- r2 )    float-ext       f_e_x_p_m_one
1.1       anton    2195: ""@i{r2}=@i{e}**@i{r1}@minus{}1""
                   2196: #ifdef HAVE_EXPM1
1.3       pazsan   2197: extern double
                   2198: #ifdef NeXT
                   2199:               const
                   2200: #endif
                   2201:                     expm1(double);
1.1       anton    2202: r2 = expm1(r1);
                   2203: #else
                   2204: r2 = exp(r1)-1.;
                   2205: #endif
                   2206: 
1.47      anton    2207: fln    ( r1 -- r2 )    float-ext       f_l_n
1.1       anton    2208: r2 = log(r1);
                   2209: 
1.47      anton    2210: flnp1  ( r1 -- r2 )    float-ext       f_l_n_p_one
1.1       anton    2211: ""@i{r2}=ln(@i{r1}+1)""
                   2212: #ifdef HAVE_LOG1P
1.3       pazsan   2213: extern double
                   2214: #ifdef NeXT
                   2215:               const
                   2216: #endif
                   2217:                     log1p(double);
1.1       anton    2218: r2 = log1p(r1);
                   2219: #else
                   2220: r2 = log(r1+1.);
                   2221: #endif
                   2222: 
1.47      anton    2223: flog   ( r1 -- r2 )    float-ext       f_log
1.26      crook    2224: ""The decimal logarithm.""
1.1       anton    2225: r2 = log10(r1);
                   2226: 
1.47      anton    2227: falog  ( r1 -- r2 )    float-ext       f_a_log
1.1       anton    2228: ""@i{r2}=10**@i{r1}""
                   2229: extern double pow10(double);
                   2230: r2 = pow10(r1);
                   2231: 
1.47      anton    2232: fsin   ( r1 -- r2 )    float-ext       f_sine
1.1       anton    2233: r2 = sin(r1);
                   2234: 
1.47      anton    2235: fsincos        ( r1 -- r2 r3 ) float-ext       f_sine_cos
1.1       anton    2236: ""@i{r2}=sin(@i{r1}), @i{r3}=cos(@i{r1})""
                   2237: r2 = sin(r1);
                   2238: r3 = cos(r1);
                   2239: 
1.47      anton    2240: fsqrt  ( r1 -- r2 )    float-ext       f_square_root
1.1       anton    2241: r2 = sqrt(r1);
                   2242: 
1.47      anton    2243: ftan   ( r1 -- r2 )    float-ext       f_tan
1.1       anton    2244: r2 = tan(r1);
                   2245: :
                   2246:  fsincos f/ ;
                   2247: 
1.47      anton    2248: fsinh  ( r1 -- r2 )    float-ext       f_cinch
1.1       anton    2249: r2 = sinh(r1);
                   2250: :
                   2251:  fexpm1 fdup fdup 1. d>f f+ f/ f+ f2/ ;
                   2252: 
1.47      anton    2253: fcosh  ( r1 -- r2 )    float-ext       f_cosh
1.1       anton    2254: r2 = cosh(r1);
                   2255: :
                   2256:  fexp fdup 1/f f+ f2/ ;
                   2257: 
1.47      anton    2258: ftanh  ( r1 -- r2 )    float-ext       f_tan_h
1.1       anton    2259: r2 = tanh(r1);
                   2260: :
                   2261:  f2* fexpm1 fdup 2. d>f f+ f/ ;
                   2262: 
1.47      anton    2263: fasinh ( r1 -- r2 )    float-ext       f_a_cinch
1.1       anton    2264: r2 = asinh(r1);
                   2265: :
                   2266:  fdup fdup f* 1. d>f f+ fsqrt f/ fatanh ;
                   2267: 
1.47      anton    2268: facosh ( r1 -- r2 )    float-ext       f_a_cosh
1.1       anton    2269: r2 = acosh(r1);
                   2270: :
                   2271:  fdup fdup f* 1. d>f f- fsqrt f+ fln ;
                   2272: 
1.47      anton    2273: fatanh ( r1 -- r2 )    float-ext       f_a_tan_h
1.1       anton    2274: r2 = atanh(r1);
                   2275: :
                   2276:  fdup f0< >r fabs 1. d>f fover f- f/  f2* flnp1 f2/
                   2277:  r> IF  fnegate  THEN ;
                   2278: 
1.47      anton    2279: sfloats        ( n1 -- n2 )    float-ext       s_floats
1.52      anton    2280: ""@i{n2} is the number of address units of @i{n1}
1.29      crook    2281: single-precision IEEE floating-point numbers.""
1.1       anton    2282: n2 = n1*sizeof(SFloat);
                   2283: 
1.47      anton    2284: dfloats        ( n1 -- n2 )    float-ext       d_floats
1.52      anton    2285: ""@i{n2} is the number of address units of @i{n1}
1.29      crook    2286: double-precision IEEE floating-point numbers.""
1.1       anton    2287: n2 = n1*sizeof(DFloat);
                   2288: 
1.47      anton    2289: sfaligned      ( c_addr -- sf_addr )   float-ext       s_f_aligned
1.52      anton    2290: ""@i{sf-addr} is the first single-float-aligned address greater
1.29      crook    2291: than or equal to @i{c-addr}.""
1.1       anton    2292: sf_addr = (SFloat *)((((Cell)c_addr)+(sizeof(SFloat)-1))&(-sizeof(SFloat)));
                   2293: :
                   2294:  [ 1 sfloats 1- ] Literal + [ -1 sfloats ] Literal and ;
                   2295: 
1.47      anton    2296: dfaligned      ( c_addr -- df_addr )   float-ext       d_f_aligned
1.52      anton    2297: ""@i{df-addr} is the first double-float-aligned address greater
1.29      crook    2298: than or equal to @i{c-addr}.""
1.1       anton    2299: df_addr = (DFloat *)((((Cell)c_addr)+(sizeof(DFloat)-1))&(-sizeof(DFloat)));
                   2300: :
                   2301:  [ 1 dfloats 1- ] Literal + [ -1 dfloats ] Literal and ;
                   2302: 
1.112     pazsan   2303: v*     ( f_addr1 nstride1 f_addr2 nstride2 ucount -- r ) gforth v_star
                   2304: ""dot-product: r=v1*v2.  The first element of v1 is at f_addr1, the
                   2305: next at f_addr1+nstride1 and so on (similar for v2). Both vectors have
                   2306: ucount elements.""
1.125     anton    2307: r = v_star(f_addr1, nstride1, f_addr2, nstride2, ucount);
1.112     pazsan   2308: :
                   2309:  >r swap 2swap swap 0e r> 0 ?DO
                   2310:      dup f@ over + 2swap dup f@ f* f+ over + 2swap
                   2311:  LOOP 2drop 2drop ; 
                   2312: 
                   2313: faxpy  ( ra f_x nstridex f_y nstridey ucount -- )      gforth
                   2314: ""vy=ra*vx+vy""
1.125     anton    2315: faxpy(ra, f_x, nstridex, f_y, nstridey, ucount);
1.112     pazsan   2316: :
                   2317:  >r swap 2swap swap r> 0 ?DO
                   2318:      fdup dup f@ f* over + 2swap dup f@ f+ dup f! over + 2swap
                   2319:  LOOP 2drop 2drop fdrop ;
                   2320: 
                   2321: \+
                   2322: 
1.1       anton    2323: \ The following words access machine/OS/installation-dependent
                   2324: \   Gforth internals
                   2325: \ !! how about environmental queries DIRECT-THREADED,
                   2326: \   INDIRECT-THREADED, TOS-CACHED, FTOS-CACHED, CODEFIELD-DOES */
                   2327: 
                   2328: \ local variable implementation primitives
1.112     pazsan   2329: 
1.15      pazsan   2330: \+glocals
1.1       anton    2331: 
1.110     pazsan   2332: \g locals
                   2333: 
1.68      anton    2334: @local#        ( #noffset -- w )       gforth  fetch_local_number
                   2335: w = *(Cell *)(lp+noffset);
1.1       anton    2336: 
1.47      anton    2337: @local0        ( -- w )        new     fetch_local_zero
1.112     pazsan   2338: w = ((Cell *)lp)[0];
1.1       anton    2339: 
1.47      anton    2340: @local1        ( -- w )        new     fetch_local_four
1.112     pazsan   2341: w = ((Cell *)lp)[1];
1.1       anton    2342: 
1.47      anton    2343: @local2        ( -- w )        new     fetch_local_eight
1.112     pazsan   2344: w = ((Cell *)lp)[2];
1.1       anton    2345: 
1.47      anton    2346: @local3        ( -- w )        new     fetch_local_twelve
1.112     pazsan   2347: w = ((Cell *)lp)[3];
1.1       anton    2348: 
1.15      pazsan   2349: \+floating
1.1       anton    2350: 
1.68      anton    2351: f@local#       ( #noffset -- r )       gforth  f_fetch_local_number
                   2352: r = *(Float *)(lp+noffset);
1.1       anton    2353: 
1.47      anton    2354: f@local0       ( -- r )        new     f_fetch_local_zero
1.112     pazsan   2355: r = ((Float *)lp)[0];
1.1       anton    2356: 
1.47      anton    2357: f@local1       ( -- r )        new     f_fetch_local_eight
1.112     pazsan   2358: r = ((Float *)lp)[1];
1.1       anton    2359: 
1.15      pazsan   2360: \+
1.1       anton    2361: 
1.68      anton    2362: laddr# ( #noffset -- c_addr )  gforth  laddr_number
1.1       anton    2363: /* this can also be used to implement lp@ */
1.68      anton    2364: c_addr = (Char *)(lp+noffset);
1.1       anton    2365: 
1.68      anton    2366: lp+!#  ( #noffset -- ) gforth  lp_plus_store_number
1.1       anton    2367: ""used with negative immediate values it allocates memory on the
                   2368: local stack, a positive immediate argument drops memory from the local
                   2369: stack""
1.68      anton    2370: lp += noffset;
1.1       anton    2371: 
1.47      anton    2372: lp-    ( -- )  new     minus_four_lp_plus_store
1.1       anton    2373: lp += -sizeof(Cell);
                   2374: 
1.47      anton    2375: lp+    ( -- )  new     eight_lp_plus_store
1.1       anton    2376: lp += sizeof(Float);
                   2377: 
1.47      anton    2378: lp+2   ( -- )  new     sixteen_lp_plus_store
1.1       anton    2379: lp += 2*sizeof(Float);
                   2380: 
1.47      anton    2381: lp!    ( c_addr -- )   gforth  lp_store
1.1       anton    2382: lp = (Address)c_addr;
                   2383: 
1.47      anton    2384: >l     ( w -- )        gforth  to_l
1.1       anton    2385: lp -= sizeof(Cell);
                   2386: *(Cell *)lp = w;
                   2387: 
1.15      pazsan   2388: \+floating
1.1       anton    2389: 
1.47      anton    2390: f>l    ( r -- )        gforth  f_to_l
1.1       anton    2391: lp -= sizeof(Float);
                   2392: *(Float *)lp = r;
                   2393: 
1.47      anton    2394: fpick  ( u -- r )              gforth
1.52      anton    2395: ""Actually the stack effect is @code{ r0 ... ru u -- r0 ... ru r0 }.""
1.11      anton    2396: r = fp[u+1]; /* +1, because update of fp happens before this fragment */
                   2397: :
                   2398:  floats fp@ + f@ ;
                   2399: 
1.15      pazsan   2400: \+
                   2401: \+
1.1       anton    2402: 
1.15      pazsan   2403: \+OS
1.1       anton    2404: 
1.110     pazsan   2405: \g syslib
                   2406: 
1.131     pazsan   2407: open-lib       ( c_addr1 u1 -- u2 )    gforth  open_lib
                   2408: #if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN)
                   2409: #ifndef RTLD_GLOBAL
                   2410: #define RTLD_GLOBAL 0
                   2411: #endif
                   2412: u2=(UCell) dlopen(cstr(c_addr1, u1, 1), RTLD_GLOBAL | RTLD_LAZY);
                   2413: #else
                   2414: #  ifdef _WIN32
                   2415: u2 = (Cell) GetModuleHandle(cstr(c_addr1, u1, 1));
                   2416: #  else
                   2417: #warning Define open-lib!
                   2418: u2 = 0;
                   2419: #  endif
                   2420: #endif
                   2421: 
                   2422: lib-sym        ( c_addr1 u1 u2 -- u3 ) gforth  lib_sym
                   2423: #if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN)
                   2424: u3 = (UCell) dlsym((void*)u2,cstr(c_addr1, u1, 1));
                   2425: #else
                   2426: #  ifdef _WIN32
                   2427: u3 = (Cell) GetProcAddress((HMODULE)u2, cstr(c_addr1, u1, 1));
                   2428: #  else
                   2429: #warning Define lib-sym!
                   2430: u3 = 0;
                   2431: #  endif
                   2432: #endif
                   2433: 
1.142     pazsan   2434: wcall  ( u -- )        gforth
                   2435: IF_fpTOS(fp[0]=fpTOS);
                   2436: FP=fp;
                   2437: sp=(Cell*)(SYSCALL(Cell*(*)(Cell *, void *))u)(sp, &FP);
                   2438: fp=FP;
                   2439: IF_spTOS(spTOS=sp[0];)
                   2440: IF_fpTOS(fpTOS=fp[0]);
                   2441: 
1.131     pazsan   2442: \+FFCALL
                   2443: 
1.136     pazsan   2444: av-start-void  ( c_addr -- )   gforth  av_start_void
1.131     pazsan   2445: av_start_void(alist, c_addr);
                   2446: 
1.136     pazsan   2447: av-start-int   ( c_addr -- )   gforth  av_start_int
1.131     pazsan   2448: av_start_int(alist, c_addr, &irv);
                   2449: 
1.136     pazsan   2450: av-start-float ( c_addr -- )   gforth  av_start_float
1.131     pazsan   2451: av_start_float(alist, c_addr, &frv);
                   2452: 
1.136     pazsan   2453: av-start-double        ( c_addr -- )   gforth  av_start_double
1.131     pazsan   2454: av_start_double(alist, c_addr, &drv);
                   2455: 
1.136     pazsan   2456: av-start-longlong      ( c_addr -- )   gforth  av_start_longlong
1.131     pazsan   2457: av_start_longlong(alist, c_addr, &llrv);
                   2458: 
1.136     pazsan   2459: av-start-ptr   ( c_addr -- )   gforth  av_start_ptr
1.131     pazsan   2460: av_start_ptr(alist, c_addr, void*, &prv);
                   2461: 
                   2462: av-int  ( w -- )  gforth  av_int
                   2463: av_int(alist, w);
                   2464: 
1.136     pazsan   2465: av-float       ( r -- )        gforth  av_float
1.131     pazsan   2466: av_float(alist, r);
                   2467: 
1.136     pazsan   2468: av-double      ( r -- )        gforth  av_double
1.131     pazsan   2469: av_double(alist, r);
                   2470: 
1.136     pazsan   2471: av-longlong    ( d -- )        gforth  av_longlong
1.158     pazsan   2472: #ifdef BUGGY_LL_SIZE
                   2473: av_longlong(alist, DLO(d));
1.151     pazsan   2474: #else
1.131     pazsan   2475: av_longlong(alist, d);
1.151     pazsan   2476: #endif
1.131     pazsan   2477: 
1.136     pazsan   2478: av-ptr ( c_addr -- )   gforth  av_ptr
1.131     pazsan   2479: av_ptr(alist, void*, c_addr);
                   2480: 
1.136     pazsan   2481: av-int-r  ( R:w -- )  gforth  av_int_r
                   2482: av_int(alist, w);
                   2483: 
                   2484: av-float-r     ( -- )  gforth  av_float_r
                   2485: float r = *(Float*)lp;
                   2486: lp += sizeof(Float);
                   2487: av_float(alist, r);
                   2488: 
                   2489: av-double-r    ( -- )  gforth  av_double_r
                   2490: double r = *(Float*)lp;
                   2491: lp += sizeof(Float);
                   2492: av_double(alist, r);
                   2493: 
                   2494: av-longlong-r  ( R:d -- )      gforth  av_longlong_r
1.158     pazsan   2495: #ifdef BUGGY_LL_SIZE
                   2496: av_longlong(alist, DLO(d));
1.151     pazsan   2497: #else
1.136     pazsan   2498: av_longlong(alist, d);
1.151     pazsan   2499: #endif
1.136     pazsan   2500: 
                   2501: av-ptr-r       ( R:c_addr -- ) gforth  av_ptr_r
                   2502: av_ptr(alist, void*, c_addr);
                   2503: 
                   2504: av-call-void   ( -- )  gforth  av_call_void
1.131     pazsan   2505: SAVE_REGS
                   2506: av_call(alist);
                   2507: REST_REGS
                   2508: 
1.136     pazsan   2509: av-call-int    ( -- w )        gforth  av_call_int
1.131     pazsan   2510: SAVE_REGS
                   2511: av_call(alist);
1.134     pazsan   2512: REST_REGS
1.131     pazsan   2513: w = irv;
                   2514: 
1.136     pazsan   2515: av-call-float  ( -- r )        gforth  av_call_float
1.131     pazsan   2516: SAVE_REGS
                   2517: av_call(alist);
                   2518: REST_REGS
                   2519: r = frv;
                   2520: 
1.136     pazsan   2521: av-call-double ( -- r )        gforth  av_call_double
1.131     pazsan   2522: SAVE_REGS
                   2523: av_call(alist);
                   2524: REST_REGS
                   2525: r = drv;
                   2526: 
1.136     pazsan   2527: av-call-longlong       ( -- d )        gforth  av_call_longlong
1.131     pazsan   2528: SAVE_REGS
                   2529: av_call(alist);
                   2530: REST_REGS
1.151     pazsan   2531: #ifdef BUGGY_LONG_LONG
1.158     pazsan   2532: DLO_IS(d, llrv);
                   2533: DHI_IS(d, 0);
1.152     pazsan   2534: #else
                   2535: d = llrv;
1.151     pazsan   2536: #endif
1.131     pazsan   2537: 
1.136     pazsan   2538: av-call-ptr    ( -- c_addr )   gforth  av_call_ptr
1.131     pazsan   2539: SAVE_REGS
                   2540: av_call(alist);
                   2541: REST_REGS
                   2542: c_addr = prv;
                   2543: 
1.135     pazsan   2544: alloc-callback ( a_ip -- c_addr )      gforth  alloc_callback
                   2545: c_addr = (char *)alloc_callback(engine_callback, (Xt *)a_ip);
1.131     pazsan   2546: 
1.135     pazsan   2547: va-start-void  ( -- )  gforth  va_start_void
                   2548: va_start_void(clist);
1.131     pazsan   2549: 
1.135     pazsan   2550: va-start-int   ( -- )  gforth  va_start_int
                   2551: va_start_int(clist);
1.131     pazsan   2552: 
1.135     pazsan   2553: va-start-longlong      ( -- )  gforth  va_start_longlong
                   2554: va_start_longlong(clist);
1.131     pazsan   2555: 
1.135     pazsan   2556: va-start-ptr   ( -- )  gforth  va_start_ptr
                   2557: va_start_ptr(clist, (char *));
1.131     pazsan   2558: 
1.135     pazsan   2559: va-start-float ( -- )  gforth  va_start_float
                   2560: va_start_float(clist);
                   2561: 
                   2562: va-start-double        ( -- )  gforth  va_start_double
                   2563: va_start_double(clist);
                   2564: 
                   2565: va-arg-int     ( -- w )        gforth  va_arg_int
                   2566: w = va_arg_int(clist);
                   2567: 
                   2568: va-arg-longlong        ( -- d )        gforth  va_arg_longlong
1.151     pazsan   2569: #ifdef BUGGY_LONG_LONG
1.158     pazsan   2570: DLO_IS(d, va_arg_longlong(clist));
                   2571: DHI_IS(d, 0);
1.151     pazsan   2572: #else
1.135     pazsan   2573: d = va_arg_longlong(clist);
1.151     pazsan   2574: #endif
1.135     pazsan   2575: 
                   2576: va-arg-ptr     ( -- c_addr )   gforth  va_arg_ptr
                   2577: c_addr = (char *)va_arg_ptr(clist,char*);
                   2578: 
                   2579: va-arg-float   ( -- r )        gforth  va_arg_float
                   2580: r = va_arg_float(clist);
                   2581: 
                   2582: va-arg-double  ( -- r )        gforth  va_arg_double
                   2583: r = va_arg_double(clist);
1.131     pazsan   2584: 
                   2585: va-return-void ( -- )  gforth va_return_void
                   2586: va_return_void(clist);
                   2587: return 0;
                   2588: 
                   2589: va-return-int ( w -- ) gforth va_return_int
                   2590: va_return_int(clist, w);
                   2591: return 0;
                   2592: 
                   2593: va-return-ptr ( c_addr -- )    gforth va_return_ptr
                   2594: va_return_ptr(clist, void *, c_addr);
                   2595: return 0;
                   2596: 
                   2597: va-return-longlong ( d -- )    gforth va_return_longlong
1.151     pazsan   2598: #ifdef BUGGY_LONG_LONG
                   2599: va_return_longlong(clist, d.lo);
                   2600: #else
1.131     pazsan   2601: va_return_longlong(clist, d);
1.151     pazsan   2602: #endif
1.131     pazsan   2603: return 0;
                   2604: 
                   2605: va-return-float ( r -- )       gforth va_return_float
                   2606: va_return_float(clist, r);
                   2607: return 0;
                   2608: 
                   2609: va-return-double ( r -- )      gforth va_return_double
                   2610: va_return_double(clist, r);
                   2611: return 0;
                   2612: 
1.142     pazsan   2613: \+
                   2614: 
                   2615: \+OLDCALL
1.131     pazsan   2616: 
1.1       anton    2617: define(`uploop',
                   2618:        `pushdef(`$1', `$2')_uploop(`$1', `$2', `$3', `$4', `$5')`'popdef(`$1')')
                   2619: define(`_uploop',
                   2620:        `ifelse($1, `$3', `$5',
                   2621:               `$4`'define(`$1', incr($1))_uploop(`$1', `$2', `$3', `$4', `$5')')')
                   2622: \ argflist(argnum): Forth argument list
                   2623: define(argflist,
                   2624:        `ifelse($1, 0, `',
                   2625:                `uploop(`_i', 1, $1, `format(`u%d ', _i)', `format(`u%d ', _i)')')')
                   2626: \ argdlist(argnum): declare C's arguments
                   2627: define(argdlist,
                   2628:        `ifelse($1, 0, `',
                   2629:                `uploop(`_i', 1, $1, `Cell, ', `Cell')')')
                   2630: \ argclist(argnum): pass C's arguments
                   2631: define(argclist,
                   2632:        `ifelse($1, 0, `',
                   2633:                `uploop(`_i', 1, $1, `format(`u%d, ', _i)', `format(`u%d', _i)')')')
                   2634: \ icall(argnum)
                   2635: define(icall,
1.47      anton    2636: `icall$1       ( argflist($1)u -- uret )       gforth
1.9       pazsan   2637: uret = (SYSCALL(Cell(*)(argdlist($1)))u)(argclist($1));
1.1       anton    2638: 
                   2639: ')
                   2640: define(fcall,
1.47      anton    2641: `fcall$1       ( argflist($1)u -- rret )       gforth
1.9       pazsan   2642: rret = (SYSCALL(Float(*)(argdlist($1)))u)(argclist($1));
1.1       anton    2643: 
                   2644: ')
                   2645: 
1.46      pazsan   2646: \ close ' to keep fontify happy
1.1       anton    2647: 
                   2648: uploop(i, 0, 7, `icall(i)')
                   2649: icall(20)
                   2650: uploop(i, 0, 7, `fcall(i)')
                   2651: fcall(20)
                   2652: 
1.15      pazsan   2653: \+
1.131     pazsan   2654: \+
1.1       anton    2655: 
1.142     pazsan   2656: \g peephole
1.46      pazsan   2657: 
1.112     pazsan   2658: \+peephole
                   2659: 
1.119     anton    2660: compile-prim1 ( a_prim -- ) gforth compile_prim1
                   2661: ""compile prim (incl. immargs) at @var{a_prim}""
                   2662: compile_prim1(a_prim);
                   2663: 
                   2664: finish-code ( -- ) gforth finish_code
                   2665: ""Perform delayed steps in code generation (branch resolution, I-cache
                   2666: flushing).""
1.149     anton    2667: IF_spTOS(sp[0]=spTOS); /* workaround for failing to save spTOS
                   2668:                          (gcc-2.95.1, gforth-fast --enable-force-reg) */
1.119     anton    2669: finish_code();
1.149     anton    2670: IF_spTOS(spTOS=sp[0]);
1.119     anton    2671: 
                   2672: forget-dyncode ( c_code -- f ) gforth-internal forget_dyncode
                   2673: f = forget_dyncode(c_code);
                   2674: 
                   2675: decompile-prim ( a_code -- a_prim ) gforth-internal decompile_prim
                   2676: ""a_prim is the code address of the primitive that has been
                   2677: compile_prim1ed to a_code""
1.121     anton    2678: a_prim = (Cell *)decompile_code((Label)a_code);
1.119     anton    2679: 
1.112     pazsan   2680: \ set-next-code and call2 do not appear in images and can be
                   2681: \ renumbered arbitrarily
1.46      pazsan   2682: 
1.112     pazsan   2683: set-next-code ( #w -- ) gforth set_next_code
                   2684: #ifdef NO_IP
                   2685: next_code = (Label)w;
                   2686: #endif
1.34      jwilke   2687: 
1.112     pazsan   2688: call2 ( #a_callee #a_ret_addr -- R:a_ret_addr ) gforth
                   2689: /* call with explicit return address */
                   2690: #ifdef NO_IP
                   2691: INST_TAIL;
                   2692: JUMP(a_callee);
1.45      anton    2693: #else
1.112     pazsan   2694: assert(0);
1.45      anton    2695: #endif
1.131     pazsan   2696: 
                   2697: tag-offsets ( -- a_addr ) gforth tag_offsets
                   2698: extern Cell groups[32];
                   2699: a_addr = groups;
1.51      anton    2700: 
1.54      pazsan   2701: \+
1.128     anton    2702: 
                   2703: \g static_super
                   2704: 
1.147     anton    2705: ifdef(`M4_ENGINE_FAST',
                   2706: `include(peeprules.vmg)')
1.54      pazsan   2707: 
1.112     pazsan   2708: \g end

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