Annotation of gforth/prim, revision 1.161

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
1.150     anton     252: IF_spTOS(spTOS = sp[0]); /* inst_tail would produce a NEXT_P1 */
1.76      anton     253: SUPER_END;
1.161   ! anton     254: VM_JUMP(EXEC1(xt));
1.1       anton     255: 
1.47      anton     256: perform        ( a_addr -- )   gforth
1.55      anton     257: ""@code{@@ execute}.""
1.1       anton     258: /* and pfe */
1.102     anton     259: #ifndef NO_IP
1.1       anton     260: ip=IP;
1.102     anton     261: #endif
1.150     anton     262: IF_spTOS(spTOS = sp[0]); /* inst_tail would produce a NEXT_P1 */
1.76      anton     263: SUPER_END;
1.161   ! anton     264: VM_JUMP(EXEC1(*(Xt *)a_addr));
1.1       anton     265: :
                    266:  @ execute ;
                    267: 
1.112     pazsan    268: ;s     ( R:w -- )              gforth  semis
                    269: ""The primitive compiled by @code{EXIT}.""
                    270: #ifdef NO_IP
                    271: INST_TAIL;
                    272: goto *(void *)w;
                    273: #else
                    274: SET_IP((Xt *)w);
                    275: #endif
                    276: 
                    277: unloop ( R:w1 R:w2 -- )        core
                    278: /* !! alias for 2rdrop */
                    279: :
                    280:  r> rdrop rdrop >r ;
                    281: 
                    282: lit-perform    ( #a_addr -- )  new     lit_perform
                    283: #ifndef NO_IP
                    284: ip=IP;
                    285: #endif
                    286: SUPER_END;
1.161   ! anton     287: VM_JUMP(EXEC1(*(Xt *)a_addr));
1.112     pazsan    288: 
                    289: does-exec ( #a_cfa -- R:nest a_pfa )   new     does_exec
                    290: #ifdef NO_IP
                    291: /* compiled to LIT CALL by compile_prim */
                    292: assert(0);
                    293: #else
                    294: a_pfa = PFA(a_cfa);
                    295: nest = (Cell)IP;
                    296: IF_spTOS(spTOS = sp[0]);
                    297: #ifdef DEBUG
                    298:     {
                    299:       CFA_TO_NAME(a_cfa);
                    300:       fprintf(stderr,"%08lx: does %08lx %.*s\n",
                    301:              (Cell)ip,(Cell)a_cfa,len,name);
                    302:     }
                    303: #endif
                    304: SET_IP(DOES_CODE1(a_cfa));
                    305: #endif
                    306: 
1.15      pazsan    307: \+glocals
1.1       anton     308: 
1.112     pazsan    309: branch-lp+!# ( #a_target #nlocals -- ) gforth  branch_lp_plus_store_number
1.1       anton     310: /* this will probably not be used */
1.68      anton     311: lp += nlocals;
1.112     pazsan    312: #ifdef NO_IP
                    313: INST_TAIL;
                    314: JUMP(a_target);
                    315: #else
                    316: SET_IP((Xt *)a_target);
                    317: #endif
1.1       anton     318: 
1.15      pazsan    319: \+
1.1       anton     320: 
1.112     pazsan    321: branch ( #a_target -- )        gforth
                    322: #ifdef NO_IP
                    323: INST_TAIL;
                    324: JUMP(a_target);
                    325: #else
                    326: SET_IP((Xt *)a_target);
                    327: #endif
1.1       anton     328: :
1.112     pazsan    329:  r> @ >r ;
1.1       anton     330: 
1.112     pazsan    331: \ condbranch(forthname,stackeffect,restline,code1,code2,forthcode)
1.1       anton     332: \ this is non-syntactical: code must open a brace that is closed by the macro
1.159     anton     333: \ condbranch(forthname,stackeffect,restline,code1,code2,forthcode)
                    334: \ this is non-syntactical: code must open a brace that is closed by the macro
1.1       anton     335: define(condbranch,
1.159     anton     336: $1 ( `#'a_target $2 ) $3
                    337: $4     #ifdef NO_IP
                    338: INST_TAIL;
                    339: #endif
                    340: $5     #ifdef NO_IP
                    341: JUMP(a_target);
                    342: #else
                    343: SET_IP((Xt *)a_target);
                    344: #endif
                    345: }
                    346: $6
                    347: 
                    348: \+glocals
                    349: 
                    350: $1-lp+!`#' ( `#'a_target `#'nlocals $2 ) $3_lp_plus_store_number
                    351: $4     #ifdef NO_IP
                    352: INST_TAIL;
                    353: #endif
                    354: $5     lp += nlocals;
                    355: #ifdef NO_IP
                    356: JUMP(a_target);
                    357: #else
                    358: SET_IP((Xt *)a_target);
                    359: #endif
                    360: }
                    361: 
                    362: \+
                    363: )
                    364: 
                    365: \ version that generates two jumps (not good for PR 15242 workaround)
                    366: define(condbranch_twojump,
1.112     pazsan    367: $1 ( `#'a_target $2 ) $3
                    368: $4     #ifdef NO_IP
1.96      anton     369: INST_TAIL;
1.112     pazsan    370: #endif
                    371: $5     #ifdef NO_IP
                    372: JUMP(a_target);
                    373: #else
                    374: SET_IP((Xt *)a_target);
                    375: INST_TAIL; NEXT_P2;
                    376: #endif
1.1       anton     377: }
1.87      anton     378: SUPER_CONTINUE;
1.112     pazsan    379: $6
1.1       anton     380: 
1.15      pazsan    381: \+glocals
1.1       anton     382: 
1.112     pazsan    383: $1-lp+!`#' ( `#'a_target `#'nlocals $2 ) $3_lp_plus_store_number
                    384: $4     #ifdef NO_IP
1.96      anton     385: INST_TAIL;
1.112     pazsan    386: #endif
                    387: $5     lp += nlocals;
                    388: #ifdef NO_IP
                    389: JUMP(a_target);
                    390: #else
                    391: SET_IP((Xt *)a_target);
                    392: INST_TAIL; NEXT_P2;
                    393: #endif
1.1       anton     394: }
1.87      anton     395: SUPER_CONTINUE;
1.1       anton     396: 
1.15      pazsan    397: \+
1.1       anton     398: )
                    399: 
1.68      anton     400: condbranch(?branch,f --,f83    question_branch,
1.112     pazsan    401: ,if (f==0) {
1.5       jwilke    402: ,:
1.112     pazsan    403:  0= dup 0=          \ !f f
                    404:  r> tuck cell+      \ !f branchoffset f IP+
                    405:  and -rot @ and or  \ f&IP+|!f&branch
1.5       jwilke    406:  >r ;)
1.1       anton     407: 
                    408: \ we don't need an lp_plus_store version of the ?dup-stuff, because it
                    409: \ is only used in if's (yet)
                    410: 
1.15      pazsan    411: \+xconds
1.1       anton     412: 
1.112     pazsan    413: ?dup-?branch   ( #a_target f -- f )    new     question_dupe_question_branch
1.1       anton     414: ""The run-time procedure compiled by @code{?DUP-IF}.""
                    415: if (f==0) {
                    416:   sp++;
1.64      anton     417:   IF_spTOS(spTOS = sp[0]);
1.112     pazsan    418: #ifdef NO_IP
                    419: INST_TAIL;
                    420: JUMP(a_target);
                    421: #else
                    422: SET_IP((Xt *)a_target);
                    423:   INST_TAIL; NEXT_P2;
                    424: #endif
1.1       anton     425: }
1.87      anton     426: SUPER_CONTINUE;
1.1       anton     427: 
1.112     pazsan    428: ?dup-0=-?branch ( #a_target f -- ) new question_dupe_zero_equals_question_branch
1.1       anton     429: ""The run-time procedure compiled by @code{?DUP-0=-IF}.""
                    430: /* the approach taken here of declaring the word as having the stack
                    431: effect ( f -- ) and correcting for it in the branch-taken case costs a
                    432: few cycles in that case, but is easy to convert to a CONDBRANCH
                    433: invocation */
                    434: if (f!=0) {
                    435:   sp--;
1.112     pazsan    436: #ifdef NO_IP
                    437:   JUMP(a_target);
                    438: #else
                    439:   SET_IP((Xt *)a_target);
1.1       anton     440:   NEXT;
1.112     pazsan    441: #endif
1.1       anton     442: }
1.87      anton     443: SUPER_CONTINUE;
1.1       anton     444: 
1.15      pazsan    445: \+
1.31      jwilke    446: \fhas? skiploopprims 0= [IF]
1.1       anton     447: 
1.68      anton     448: condbranch((next),R:n1 -- R:n2,cmFORTH paren_next,
1.65      anton     449: n2=n1-1;
1.112     pazsan    450: ,if (n1) {
1.1       anton     451: ,:
                    452:  r> r> dup 1- >r
1.112     pazsan    453:  IF @ >r ELSE cell+ >r THEN ;)
1.1       anton     454: 
1.68      anton     455: condbranch((loop),R:nlimit R:n1 -- R:nlimit R:n2,gforth        paren_loop,
1.65      anton     456: n2=n1+1;
1.112     pazsan    457: ,if (n2 != nlimit) {
1.1       anton     458: ,:
                    459:  r> r> 1+ r> 2dup =
                    460:  IF >r 1- >r cell+ >r
1.112     pazsan    461:  ELSE >r >r @ >r THEN ;)
1.1       anton     462: 
1.68      anton     463: condbranch((+loop),n R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_plus_loop,
1.1       anton     464: /* !! check this thoroughly */
                    465: /* sign bit manipulation and test: (x^y)<0 is equivalent to (x<0) != (y<0) */
                    466: /* dependent upon two's complement arithmetic */
1.65      anton     467: Cell olddiff = n1-nlimit;
                    468: n2=n1+n;       
1.149     anton     469: ,if (((olddiff^(olddiff+n))    /* the limit is not crossed */
                    470:      &(olddiff^n))            /* OR it is a wrap-around effect */
                    471:     >=0) { /* & is used to avoid having two branches for gforth-native */
1.1       anton     472: ,:
                    473:  r> swap
                    474:  r> r> 2dup - >r
                    475:  2 pick r@ + r@ xor 0< 0=
                    476:  3 pick r> xor 0< 0= or
1.112     pazsan    477:  IF    >r + >r @ >r
1.1       anton     478:  ELSE  >r >r drop cell+ >r THEN ;)
                    479: 
1.15      pazsan    480: \+xconds
1.1       anton     481: 
1.68      anton     482: condbranch((-loop),u R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_minus_loop,
1.65      anton     483: UCell olddiff = n1-nlimit;
                    484: n2=n1-u;
1.112     pazsan    485: ,if (olddiff>u) {
1.1       anton     486: ,)
                    487: 
1.68      anton     488: condbranch((s+loop),n R:nlimit R:n1 -- R:nlimit R:n2,gforth    paren_symmetric_plus_loop,
1.1       anton     489: ""The run-time procedure compiled by S+LOOP. It loops until the index
                    490: crosses the boundary between limit and limit-sign(n). I.e. a symmetric
                    491: version of (+LOOP).""
                    492: /* !! check this thoroughly */
1.65      anton     493: Cell diff = n1-nlimit;
1.1       anton     494: Cell newdiff = diff+n;
                    495: if (n<0) {
                    496:     diff = -diff;
                    497:     newdiff = -newdiff;
                    498: }
1.65      anton     499: n2=n1+n;
1.149     anton     500: ,if (((~diff)|newdiff)<0) { /* use | to avoid two branches for gforth-native */
1.1       anton     501: ,)
                    502: 
1.15      pazsan    503: \+
1.1       anton     504: 
1.112     pazsan    505: (for)   ( ncount -- R:nlimit R:ncount )         cmFORTH         paren_for
1.1       anton     506: /* or (for) = >r -- collides with unloop! */
1.65      anton     507: nlimit=0;
1.1       anton     508: :
                    509:  r> swap 0 >r >r >r ;
                    510: 
1.112     pazsan    511: (do)    ( nlimit nstart -- R:nlimit R:nstart )  gforth          paren_do
1.1       anton     512: :
                    513:  r> swap rot >r >r >r ;
                    514: 
1.112     pazsan    515: (?do) ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth  paren_question_do
                    516: #ifdef NO_IP
                    517:     INST_TAIL;
                    518: #endif
1.1       anton     519: if (nstart == nlimit) {
1.112     pazsan    520: #ifdef NO_IP
                    521:     JUMP(a_target);
                    522: #else
                    523:     SET_IP((Xt *)a_target);
                    524:     INST_TAIL; NEXT_P2;
                    525: #endif
1.1       anton     526: }
1.87      anton     527: SUPER_CONTINUE;
1.1       anton     528: :
                    529:   2dup =
                    530:   IF   r> swap rot >r >r
1.112     pazsan    531:        @ >r
1.1       anton     532:   ELSE r> swap rot >r >r
                    533:        cell+ >r
                    534:   THEN ;                               \ --> CORE-EXT
                    535: 
1.15      pazsan    536: \+xconds
1.1       anton     537: 
1.112     pazsan    538: (+do)  ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth paren_plus_do
                    539: #ifdef NO_IP
                    540:     INST_TAIL;
                    541: #endif
1.1       anton     542: if (nstart >= nlimit) {
1.112     pazsan    543: #ifdef NO_IP
                    544:     JUMP(a_target);
                    545: #else
                    546:     SET_IP((Xt *)a_target);
                    547:     INST_TAIL; NEXT_P2;
                    548: #endif
1.1       anton     549: }
1.87      anton     550: SUPER_CONTINUE;
1.1       anton     551: :
                    552:  swap 2dup
                    553:  r> swap >r swap >r
                    554:  >=
                    555:  IF
1.112     pazsan    556:      @
1.1       anton     557:  ELSE
                    558:      cell+
                    559:  THEN  >r ;
                    560: 
1.112     pazsan    561: (u+do) ( #a_target ulimit ustart -- R:ulimit R:ustart ) gforth paren_u_plus_do
                    562: #ifdef NO_IP
                    563:     INST_TAIL;
                    564: #endif
1.1       anton     565: if (ustart >= ulimit) {
1.112     pazsan    566: #ifdef NO_IP
                    567: JUMP(a_target);
                    568: #else
                    569: SET_IP((Xt *)a_target);
                    570: INST_TAIL; NEXT_P2;
                    571: #endif
1.1       anton     572: }
1.87      anton     573: SUPER_CONTINUE;
1.1       anton     574: :
                    575:  swap 2dup
                    576:  r> swap >r swap >r
                    577:  u>=
                    578:  IF
1.112     pazsan    579:      @
1.1       anton     580:  ELSE
                    581:      cell+
                    582:  THEN  >r ;
                    583: 
1.112     pazsan    584: (-do)  ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth paren_minus_do
                    585: #ifdef NO_IP
                    586:     INST_TAIL;
                    587: #endif
1.1       anton     588: if (nstart <= nlimit) {
1.112     pazsan    589: #ifdef NO_IP
                    590: JUMP(a_target);
                    591: #else
                    592: SET_IP((Xt *)a_target);
                    593: INST_TAIL; NEXT_P2;
                    594: #endif
1.1       anton     595: }
1.87      anton     596: SUPER_CONTINUE;
1.1       anton     597: :
                    598:  swap 2dup
                    599:  r> swap >r swap >r
                    600:  <=
                    601:  IF
1.112     pazsan    602:      @
1.1       anton     603:  ELSE
                    604:      cell+
                    605:  THEN  >r ;
                    606: 
1.112     pazsan    607: (u-do) ( #a_target ulimit ustart -- R:ulimit R:ustart ) gforth paren_u_minus_do
                    608: #ifdef NO_IP
                    609:     INST_TAIL;
                    610: #endif
1.1       anton     611: if (ustart <= ulimit) {
1.112     pazsan    612: #ifdef NO_IP
                    613: JUMP(a_target);
                    614: #else
                    615: SET_IP((Xt *)a_target);
                    616: INST_TAIL; NEXT_P2;
                    617: #endif
1.1       anton     618: }
1.87      anton     619: SUPER_CONTINUE;
1.1       anton     620: :
                    621:  swap 2dup
                    622:  r> swap >r swap >r
                    623:  u<=
                    624:  IF
1.112     pazsan    625:      @
1.1       anton     626:  ELSE
                    627:      cell+
                    628:  THEN  >r ;
                    629: 
1.15      pazsan    630: \+
1.1       anton     631: 
1.5       jwilke    632: \ don't make any assumptions where the return stack is!!
                    633: \ implement this in machine code if it should run quickly!
                    634: 
1.65      anton     635: i      ( R:n -- R:n n )                core
1.1       anton     636: :
1.5       jwilke    637: \ rp@ cell+ @ ;
                    638:   r> r> tuck >r >r ;
1.1       anton     639: 
1.65      anton     640: i'     ( R:w R:w2 -- R:w R:w2 w )              gforth          i_tick
1.1       anton     641: :
1.5       jwilke    642: \ rp@ cell+ cell+ @ ;
                    643:   r> r> r> dup itmp ! >r >r >r itmp @ ;
                    644: variable itmp
1.1       anton     645: 
1.65      anton     646: j      ( R:n R:d1 -- n R:n R:d1 )              core
1.1       anton     647: :
1.5       jwilke    648: \ rp@ cell+ cell+ cell+ @ ;
                    649:   r> r> r> r> dup itmp ! >r >r >r >r itmp @ ;
                    650: [IFUNDEF] itmp variable itmp [THEN]
1.1       anton     651: 
1.65      anton     652: k      ( R:n R:d1 R:d2 -- n R:n R:d1 R:d2 )            gforth
1.1       anton     653: :
1.5       jwilke    654: \ rp@ [ 5 cells ] Literal + @ ;
                    655:   r> r> r> r> r> r> dup itmp ! >r >r >r >r >r >r itmp @ ;
                    656: [IFUNDEF] itmp variable itmp [THEN]
1.31      jwilke    657: 
                    658: \f[THEN]
1.1       anton     659: 
                    660: \ digit is high-level: 0/0%
                    661: 
1.83      pazsan    662: \g strings
                    663: 
1.47      anton     664: move   ( c_from c_to ucount -- )               core
1.52      anton     665: ""Copy the contents of @i{ucount} aus at @i{c-from} to
1.33      anton     666: @i{c-to}. @code{move} works correctly even if the two areas overlap.""
1.52      anton     667: /* !! note that the standard specifies addr, not c-addr */
1.1       anton     668: memmove(c_to,c_from,ucount);
                    669: /* make an Ifdef for bsd and others? */
                    670: :
                    671:  >r 2dup u< IF r> cmove> ELSE r> cmove THEN ;
                    672: 
1.47      anton     673: cmove  ( c_from c_to u -- )    string  c_move
1.33      anton     674: ""Copy the contents of @i{ucount} characters from data space at
                    675: @i{c-from} to @i{c-to}. The copy proceeds @code{char}-by-@code{char}
                    676: from low address to high address; i.e., for overlapping areas it is
                    677: safe if @i{c-to}=<@i{c-from}.""
1.125     anton     678: cmove(c_from,c_to,u);
1.1       anton     679: :
                    680:  bounds ?DO  dup c@ I c! 1+  LOOP  drop ;
                    681: 
1.47      anton     682: cmove> ( c_from c_to u -- )    string  c_move_up
1.33      anton     683: ""Copy the contents of @i{ucount} characters from data space at
                    684: @i{c-from} to @i{c-to}. The copy proceeds @code{char}-by-@code{char}
                    685: from high address to low address; i.e., for overlapping areas it is
                    686: safe if @i{c-to}>=@i{c-from}.""
1.125     anton     687: cmove_up(c_from,c_to,u);
1.1       anton     688: :
                    689:  dup 0= IF  drop 2drop exit  THEN
                    690:  rot over + -rot bounds swap 1-
                    691:  DO  1- dup c@ I c!  -1 +LOOP  drop ;
                    692: 
1.47      anton     693: fill   ( c_addr u c -- )       core
1.52      anton     694: ""Store @i{c} in @i{u} chars starting at @i{c-addr}.""
1.1       anton     695: memset(c_addr,c,u);
                    696: :
                    697:  -rot bounds
                    698:  ?DO  dup I c!  LOOP  drop ;
                    699: 
1.47      anton     700: compare        ( c_addr1 u1 c_addr2 u2 -- n )  string
1.29      crook     701: ""Compare two strings lexicographically. If they are equal, @i{n} is 0; if
                    702: the first string is smaller, @i{n} is -1; if the first string is larger, @i{n}
1.1       anton     703: is 1. Currently this is based on the machine's character
1.26      crook     704: comparison. In the future, this may change to consider the current
1.1       anton     705: locale and its collation order.""
1.46      pazsan    706: /* close ' to keep fontify happy */ 
1.125     anton     707: n = compare(c_addr1, u1, c_addr2, u2);
1.1       anton     708: :
1.43      pazsan    709:  rot 2dup swap - >r min swap -text dup
                    710:  IF  rdrop  ELSE  drop r> sgn  THEN ;
1.143     pazsan    711: : -text ( c_addr1 u c_addr2 -- n )
                    712:  swap bounds
                    713:  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                    714:  ELSE  c@ I c@ - unloop  THEN  sgn ;
1.43      pazsan    715: : sgn ( n -- -1/0/1 )
                    716:  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton     717: 
1.125     anton     718: \ -text is only used by replaced primitives now; move it elsewhere
                    719: \ -text        ( c_addr1 u c_addr2 -- n )      new     dash_text
                    720: \ n = memcmp(c_addr1, c_addr2, u);
                    721: \ if (n<0)
                    722: \   n = -1;
                    723: \ else if (n>0)
                    724: \   n = 1;
                    725: \ :
                    726: \  swap bounds
                    727: \  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                    728: \  ELSE  c@ I c@ - unloop  THEN  sgn ;
                    729: \ : sgn ( n -- -1/0/1 )
                    730: \  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton     731: 
1.47      anton     732: toupper        ( c1 -- c2 )    gforth
1.29      crook     733: ""If @i{c1} is a lower-case character (in the current locale), @i{c2}
1.25      anton     734: is the equivalent upper-case character. All other characters are unchanged.""
1.1       anton     735: c2 = toupper(c1);
                    736: :
                    737:  dup [char] a - [ char z char a - 1 + ] Literal u<  bl and - ;
                    738: 
1.47      anton     739: /string        ( c_addr1 u1 n -- c_addr2 u2 )  string  slash_string
1.29      crook     740: ""Adjust the string specified by @i{c-addr1, u1} to remove @i{n}
1.27      crook     741: characters from the start of the string.""
1.1       anton     742: c_addr2 = c_addr1+n;
                    743: u2 = u1-n;
                    744: :
                    745:  tuck - >r + r> dup 0< IF  - 0  THEN ;
                    746: 
1.83      pazsan    747: \g arith
                    748: 
1.112     pazsan    749: lit    ( #w -- w )             gforth
                    750: :
                    751:  r> dup @ swap cell+ >r ;
                    752: 
1.47      anton     753: +      ( n1 n2 -- n )          core    plus
1.1       anton     754: n = n1+n2;
                    755: 
1.112     pazsan    756: \ lit+ / lit_plus = lit +
                    757: 
                    758: lit+   ( n1 #n2 -- n )         new     lit_plus
                    759: n=n1+n2;
                    760: 
1.1       anton     761: \ PFE-0.9.14 has it differently, but the next release will have it as follows
1.47      anton     762: under+ ( n1 n2 n3 -- n n2 )    gforth  under_plus
1.29      crook     763: ""add @i{n3} to @i{n1} (giving @i{n})""
1.1       anton     764: n = n1+n3;
                    765: :
                    766:  rot + swap ;
                    767: 
1.47      anton     768: -      ( n1 n2 -- n )          core    minus
1.1       anton     769: n = n1-n2;
                    770: :
                    771:  negate + ;
                    772: 
1.47      anton     773: negate ( n1 -- n2 )            core
1.1       anton     774: /* use minus as alias */
                    775: n2 = -n1;
                    776: :
                    777:  invert 1+ ;
                    778: 
1.47      anton     779: 1+     ( n1 -- n2 )            core            one_plus
1.1       anton     780: n2 = n1+1;
                    781: :
                    782:  1 + ;
                    783: 
1.47      anton     784: 1-     ( n1 -- n2 )            core            one_minus
1.1       anton     785: n2 = n1-1;
                    786: :
                    787:  1 - ;
                    788: 
1.47      anton     789: max    ( n1 n2 -- n )  core
1.1       anton     790: if (n1<n2)
                    791:   n = n2;
                    792: else
                    793:   n = n1;
                    794: :
                    795:  2dup < IF swap THEN drop ;
                    796: 
1.47      anton     797: min    ( n1 n2 -- n )  core
1.1       anton     798: if (n1<n2)
                    799:   n = n1;
                    800: else
                    801:   n = n2;
                    802: :
                    803:  2dup > IF swap THEN drop ;
                    804: 
1.52      anton     805: abs    ( n -- u )      core
                    806: if (n<0)
                    807:   u = -n;
1.1       anton     808: else
1.52      anton     809:   u = n;
1.1       anton     810: :
                    811:  dup 0< IF negate THEN ;
                    812: 
1.47      anton     813: *      ( n1 n2 -- n )          core    star
1.1       anton     814: n = n1*n2;
                    815: :
                    816:  um* drop ;
                    817: 
1.47      anton     818: /      ( n1 n2 -- n )          core    slash
1.1       anton     819: n = n1/n2;
                    820: :
                    821:  /mod nip ;
                    822: 
1.47      anton     823: mod    ( n1 n2 -- n )          core
1.1       anton     824: n = n1%n2;
                    825: :
                    826:  /mod drop ;
                    827: 
1.47      anton     828: /mod   ( n1 n2 -- n3 n4 )              core            slash_mod
1.1       anton     829: n4 = n1/n2;
                    830: n3 = n1%n2; /* !! is this correct? look into C standard! */
                    831: :
                    832:  >r s>d r> fm/mod ;
                    833: 
1.47      anton     834: 2*     ( n1 -- n2 )            core            two_star
1.52      anton     835: ""Shift left by 1; also works on unsigned numbers""
1.1       anton     836: n2 = 2*n1;
                    837: :
                    838:  dup + ;
                    839: 
1.47      anton     840: 2/     ( n1 -- n2 )            core            two_slash
1.52      anton     841: ""Arithmetic shift right by 1.  For signed numbers this is a floored
                    842: division by 2 (note that @code{/} not necessarily floors).""
1.1       anton     843: n2 = n1>>1;
                    844: :
                    845:  dup MINI and IF 1 ELSE 0 THEN
                    846:  [ bits/byte cell * 1- ] literal 
1.5       jwilke    847:  0 DO 2* swap dup 2* >r MINI and 
1.1       anton     848:      IF 1 ELSE 0 THEN or r> swap
                    849:  LOOP nip ;
                    850: 
1.47      anton     851: fm/mod ( d1 n1 -- n2 n3 )              core            f_m_slash_mod
1.29      crook     852: ""Floored division: @i{d1} = @i{n3}*@i{n1}+@i{n2}, @i{n1}>@i{n2}>=0 or 0>=@i{n2}>@i{n1}.""
1.158     pazsan    853: #ifdef BUGGY_LL_DIV
1.1       anton     854: DCell r = fmdiv(d1,n1);
                    855: n2=r.hi;
                    856: n3=r.lo;
                    857: #else
                    858: /* assumes that the processor uses either floored or symmetric division */
                    859: n3 = d1/n1;
                    860: n2 = d1%n1;
                    861: /* note that this 1%-3>0 is optimized by the compiler */
                    862: if (1%-3>0 && (d1<0) != (n1<0) && n2!=0) {
                    863:   n3--;
                    864:   n2+=n1;
                    865: }
                    866: #endif
                    867: :
                    868:  dup >r dup 0< IF  negate >r dnegate r>  THEN
                    869:  over       0< IF  tuck + swap  THEN
                    870:  um/mod
                    871:  r> 0< IF  swap negate swap  THEN ;
                    872: 
1.47      anton     873: sm/rem ( d1 n1 -- n2 n3 )              core            s_m_slash_rem
1.29      crook     874: ""Symmetric division: @i{d1} = @i{n3}*@i{n1}+@i{n2}, sign(@i{n2})=sign(@i{d1}) or 0.""
1.158     pazsan    875: #ifdef BUGGY_LL_DIV
1.1       anton     876: DCell r = smdiv(d1,n1);
                    877: n2=r.hi;
                    878: n3=r.lo;
                    879: #else
                    880: /* assumes that the processor uses either floored or symmetric division */
                    881: n3 = d1/n1;
                    882: n2 = d1%n1;
                    883: /* note that this 1%-3<0 is optimized by the compiler */
                    884: if (1%-3<0 && (d1<0) != (n1<0) && n2!=0) {
                    885:   n3++;
                    886:   n2-=n1;
                    887: }
                    888: #endif
                    889: :
                    890:  over >r dup >r abs -rot
                    891:  dabs rot um/mod
                    892:  r> r@ xor 0< IF       negate       THEN
                    893:  r>        0< IF  swap negate swap  THEN ;
                    894: 
1.47      anton     895: m*     ( n1 n2 -- d )          core    m_star
1.158     pazsan    896: #ifdef BUGGY_LL_MUL
1.1       anton     897: d = mmul(n1,n2);
                    898: #else
                    899: d = (DCell)n1 * (DCell)n2;
                    900: #endif
                    901: :
                    902:  2dup      0< and >r
                    903:  2dup swap 0< and >r
                    904:  um* r> - r> - ;
                    905: 
1.47      anton     906: um*    ( u1 u2 -- ud )         core    u_m_star
1.1       anton     907: /* use u* as alias */
1.158     pazsan    908: #ifdef BUGGY_LL_MUL
1.1       anton     909: ud = ummul(u1,u2);
                    910: #else
                    911: ud = (UDCell)u1 * (UDCell)u2;
                    912: #endif
                    913: :
1.137     pazsan    914:    0 -rot dup [ 8 cells ] literal -
1.1       anton     915:    DO
1.137     pazsan    916:        dup 0< I' and d2*+ drop
                    917:    LOOP ;
1.1       anton     918: : d2*+ ( ud n -- ud+n c )
                    919:    over MINI
                    920:    and >r >r 2dup d+ swap r> + swap r> ;
                    921: 
1.47      anton     922: um/mod ( ud u1 -- u2 u3 )              core    u_m_slash_mod
1.32      anton     923: ""ud=u3*u1+u2, u1>u2>=0""
1.158     pazsan    924: #ifdef BUGGY_LL_DIV
1.1       anton     925: UDCell r = umdiv(ud,u1);
                    926: u2=r.hi;
                    927: u3=r.lo;
                    928: #else
                    929: u3 = ud/u1;
                    930: u2 = ud%u1;
                    931: #endif
                    932: :
                    933:    0 swap [ 8 cells 1 + ] literal 0
1.5       jwilke    934:    ?DO /modstep
1.1       anton     935:    LOOP drop swap 1 rshift or swap ;
                    936: : /modstep ( ud c R: u -- ud-?u c R: u )
1.5       jwilke    937:    >r over r@ u< 0= or IF r@ - 1 ELSE 0 THEN  d2*+ r> ;
1.1       anton     938: : d2*+ ( ud n -- ud+n c )
                    939:    over MINI
                    940:    and >r >r 2dup d+ swap r> + swap r> ;
                    941: 
1.47      anton     942: m+     ( d1 n -- d2 )          double          m_plus
1.158     pazsan    943: #ifdef BUGGY_LL_ADD
                    944: DLO_IS(d2, DLO(d1)+n);
                    945: DHI_IS(d2, DHI(d1) - (n<0) + (DLO(d2)<DLO(d1)));
1.1       anton     946: #else
                    947: d2 = d1+n;
                    948: #endif
                    949: :
                    950:  s>d d+ ;
                    951: 
1.47      anton     952: d+     ( d1 d2 -- d )          double  d_plus
1.158     pazsan    953: #ifdef BUGGY_LL_ADD
                    954: DLO_IS(d, DLO(d1) + DLO(d2));
                    955: DHI_IS(d, DHI(d1) + DHI(d2) + (d.lo<DLO(d1)));
1.1       anton     956: #else
                    957: d = d1+d2;
                    958: #endif
                    959: :
                    960:  rot + >r tuck + swap over u> r> swap - ;
                    961: 
1.47      anton     962: d-     ( d1 d2 -- d )          double          d_minus
1.158     pazsan    963: #ifdef BUGGY_LL_ADD
                    964: DLO_IS(d, DLO(d1) - DLO(d2));
                    965: DHI_IS(d, DHI(d1)-DHI(d2)-(DLO(d1)<DLO(d2)));
1.1       anton     966: #else
                    967: d = d1-d2;
                    968: #endif
                    969: :
                    970:  dnegate d+ ;
                    971: 
1.47      anton     972: dnegate        ( d1 -- d2 )            double  d_negate
1.1       anton     973: /* use dminus as alias */
1.158     pazsan    974: #ifdef BUGGY_LL_ADD
1.1       anton     975: d2 = dnegate(d1);
                    976: #else
                    977: d2 = -d1;
                    978: #endif
                    979: :
                    980:  invert swap negate tuck 0= - ;
                    981: 
1.47      anton     982: d2*    ( d1 -- d2 )            double          d_two_star
1.52      anton     983: ""Shift left by 1; also works on unsigned numbers""
1.158     pazsan    984: #ifdef BUGGY_LL_SHIFT
                    985: DLO_IS(d2, DLO(d1)<<1);
                    986: DHI_IS(d2, (DHI(d1)<<1) | (DLO(d1)>>(CELL_BITS-1)));
1.1       anton     987: #else
                    988: d2 = 2*d1;
                    989: #endif
                    990: :
                    991:  2dup d+ ;
                    992: 
1.47      anton     993: d2/    ( d1 -- d2 )            double          d_two_slash
1.52      anton     994: ""Arithmetic shift right by 1.  For signed numbers this is a floored
                    995: division by 2.""
1.158     pazsan    996: #ifdef BUGGY_LL_SHIFT
                    997: DHI_IS(d2, DHI(d1)>>1);
                    998: DLO_IS(d2, (DLO(d1)>>1) | (DHI(d1)<<(CELL_BITS-1)));
1.1       anton     999: #else
                   1000: d2 = d1>>1;
                   1001: #endif
                   1002: :
                   1003:  dup 1 and >r 2/ swap 2/ [ 1 8 cells 1- lshift 1- ] Literal and
                   1004:  r> IF  [ 1 8 cells 1- lshift ] Literal + THEN  swap ;
                   1005: 
1.47      anton    1006: and    ( w1 w2 -- w )          core
1.1       anton    1007: w = w1&w2;
                   1008: 
1.47      anton    1009: or     ( w1 w2 -- w )          core
1.1       anton    1010: w = w1|w2;
                   1011: :
                   1012:  invert swap invert and invert ;
                   1013: 
1.47      anton    1014: xor    ( w1 w2 -- w )          core    x_or
1.1       anton    1015: w = w1^w2;
                   1016: 
1.47      anton    1017: invert ( w1 -- w2 )            core
1.1       anton    1018: w2 = ~w1;
                   1019: :
                   1020:  MAXU xor ;
                   1021: 
1.47      anton    1022: rshift ( u1 n -- u2 )          core    r_shift
1.53      anton    1023: ""Logical shift right by @i{n} bits.""
1.154     pazsan   1024: #ifdef BROKEN_SHIFT
                   1025:   u2 = rshift(u1, n);
                   1026: #else
                   1027:   u2 = u1 >> n;
                   1028: #endif
1.1       anton    1029: :
                   1030:     0 ?DO 2/ MAXI and LOOP ;
                   1031: 
1.47      anton    1032: lshift ( u1 n -- u2 )          core    l_shift
1.154     pazsan   1033: #ifdef BROKEN_SHIFT
                   1034:   u2 = lshift(u1, n);
                   1035: #else
                   1036:   u2 = u1 << n;
                   1037: #endif
1.1       anton    1038: :
                   1039:     0 ?DO 2* LOOP ;
                   1040: 
1.110     pazsan   1041: \g compare
                   1042: 
1.1       anton    1043: \ comparisons(prefix, args, prefix, arg1, arg2, wordsets...)
                   1044: define(comparisons,
1.47      anton    1045: $1=    ( $2 -- f )             $6      $3equals
1.1       anton    1046: f = FLAG($4==$5);
                   1047: :
                   1048:     [ char $1x char 0 = [IF]
                   1049:        ] IF false ELSE true THEN [
                   1050:     [ELSE]
                   1051:        ] xor 0= [
                   1052:     [THEN] ] ;
                   1053: 
1.47      anton    1054: $1<>   ( $2 -- f )             $7      $3not_equals
1.1       anton    1055: f = FLAG($4!=$5);
                   1056: :
                   1057:     [ char $1x char 0 = [IF]
                   1058:        ] IF true ELSE false THEN [
                   1059:     [ELSE]
                   1060:        ] xor 0<> [
                   1061:     [THEN] ] ;
                   1062: 
1.47      anton    1063: $1<    ( $2 -- f )             $8      $3less_than
1.1       anton    1064: f = FLAG($4<$5);
                   1065: :
                   1066:     [ char $1x char 0 = [IF]
                   1067:        ] MINI and 0<> [
                   1068:     [ELSE] char $1x char u = [IF]
                   1069:        ]   2dup xor 0<  IF nip ELSE - THEN 0<  [
                   1070:        [ELSE]
                   1071:            ] MINI xor >r MINI xor r> u< [
                   1072:        [THEN]
                   1073:     [THEN] ] ;
                   1074: 
1.47      anton    1075: $1>    ( $2 -- f )             $9      $3greater_than
1.1       anton    1076: f = FLAG($4>$5);
                   1077: :
                   1078:     [ char $1x char 0 = [IF] ] negate [ [ELSE] ] swap [ [THEN] ]
                   1079:     $1< ;
                   1080: 
1.47      anton    1081: $1<=   ( $2 -- f )             gforth  $3less_or_equal
1.1       anton    1082: f = FLAG($4<=$5);
                   1083: :
                   1084:     $1> 0= ;
                   1085: 
1.47      anton    1086: $1>=   ( $2 -- f )             gforth  $3greater_or_equal
1.1       anton    1087: f = FLAG($4>=$5);
                   1088: :
                   1089:     [ char $1x char 0 = [IF] ] negate [ [ELSE] ] swap [ [THEN] ]
                   1090:     $1<= ;
                   1091: 
                   1092: )
                   1093: 
                   1094: comparisons(0, n, zero_, n, 0, core, core-ext, core, core-ext)
                   1095: comparisons(, n1 n2, , n1, n2, core, core-ext, core, core)
                   1096: comparisons(u, u1 u2, u_, u1, u2, gforth, gforth, core, core-ext)
                   1097: 
                   1098: \ dcomparisons(prefix, args, prefix, arg1, arg2, wordsets...)
                   1099: define(dcomparisons,
1.47      anton    1100: $1=    ( $2 -- f )             $6      $3equals
1.158     pazsan   1101: #ifdef BUGGY_LL_CMP
1.1       anton    1102: f = FLAG($4.lo==$5.lo && $4.hi==$5.hi);
                   1103: #else
                   1104: f = FLAG($4==$5);
                   1105: #endif
                   1106: 
1.47      anton    1107: $1<>   ( $2 -- f )             $7      $3not_equals
1.158     pazsan   1108: #ifdef BUGGY_LL_CMP
1.1       anton    1109: f = FLAG($4.lo!=$5.lo || $4.hi!=$5.hi);
                   1110: #else
                   1111: f = FLAG($4!=$5);
                   1112: #endif
                   1113: 
1.47      anton    1114: $1<    ( $2 -- f )             $8      $3less_than
1.158     pazsan   1115: #ifdef BUGGY_LL_CMP
1.1       anton    1116: f = FLAG($4.hi==$5.hi ? $4.lo<$5.lo : $4.hi<$5.hi);
                   1117: #else
                   1118: f = FLAG($4<$5);
                   1119: #endif
                   1120: 
1.47      anton    1121: $1>    ( $2 -- f )             $9      $3greater_than
1.158     pazsan   1122: #ifdef BUGGY_LL_CMP
1.1       anton    1123: f = FLAG($4.hi==$5.hi ? $4.lo>$5.lo : $4.hi>$5.hi);
                   1124: #else
                   1125: f = FLAG($4>$5);
                   1126: #endif
                   1127: 
1.47      anton    1128: $1<=   ( $2 -- f )             gforth  $3less_or_equal
1.158     pazsan   1129: #ifdef BUGGY_LL_CMP
1.1       anton    1130: f = FLAG($4.hi==$5.hi ? $4.lo<=$5.lo : $4.hi<=$5.hi);
                   1131: #else
                   1132: f = FLAG($4<=$5);
                   1133: #endif
                   1134: 
1.47      anton    1135: $1>=   ( $2 -- f )             gforth  $3greater_or_equal
1.158     pazsan   1136: #ifdef BUGGY_LL_CMP
1.1       anton    1137: f = FLAG($4.hi==$5.hi ? $4.lo>=$5.lo : $4.hi>=$5.hi);
                   1138: #else
                   1139: f = FLAG($4>=$5);
                   1140: #endif
                   1141: 
                   1142: )
                   1143: 
1.15      pazsan   1144: \+dcomps
1.1       anton    1145: 
                   1146: dcomparisons(d, d1 d2, d_, d1, d2, double, gforth, double, gforth)
                   1147: dcomparisons(d0, d, d_zero_, d, DZERO, double, gforth, double, gforth)
                   1148: dcomparisons(du, ud1 ud2, d_u_, ud1, ud2, gforth, gforth, double-ext, gforth)
                   1149: 
1.15      pazsan   1150: \+
1.1       anton    1151: 
1.47      anton    1152: within ( u1 u2 u3 -- f )               core-ext
1.32      anton    1153: ""u2=<u1<u3 or: u3=<u2 and u1 is not in [u3,u2).  This works for
                   1154: unsigned and signed numbers (but not a mixture).  Another way to think
                   1155: about this word is to consider the numbers as a circle (wrapping
                   1156: around from @code{max-u} to 0 for unsigned, and from @code{max-n} to
                   1157: min-n for signed numbers); now consider the range from u2 towards
                   1158: increasing numbers up to and excluding u3 (giving an empty range if
1.52      anton    1159: u2=u3); if u1 is in this range, @code{within} returns true.""
1.1       anton    1160: f = FLAG(u1-u2 < u3-u2);
                   1161: :
                   1162:  over - >r - r> u< ;
                   1163: 
1.112     pazsan   1164: \g stack
                   1165: 
                   1166: useraddr       ( #u -- a_addr )        new
                   1167: a_addr = (Cell *)(up+u);
                   1168: 
                   1169: up!    ( a_addr -- )   gforth  up_store
                   1170: UP=up=(char *)a_addr;
                   1171: :
                   1172:  up ! ;
                   1173: Variable UP
                   1174: 
1.47      anton    1175: sp@    ( -- a_addr )           gforth          sp_fetch
1.1       anton    1176: a_addr = sp+1;
                   1177: 
1.47      anton    1178: sp!    ( a_addr -- )           gforth          sp_store
1.1       anton    1179: sp = a_addr;
1.64      anton    1180: /* works with and without spTOS caching */
1.1       anton    1181: 
1.47      anton    1182: rp@    ( -- a_addr )           gforth          rp_fetch
1.1       anton    1183: a_addr = rp;
                   1184: 
1.47      anton    1185: rp!    ( a_addr -- )           gforth          rp_store
1.1       anton    1186: rp = a_addr;
                   1187: 
1.15      pazsan   1188: \+floating
1.1       anton    1189: 
1.47      anton    1190: fp@    ( -- f_addr )   gforth  fp_fetch
1.1       anton    1191: f_addr = fp;
                   1192: 
1.47      anton    1193: fp!    ( f_addr -- )   gforth  fp_store
1.1       anton    1194: fp = f_addr;
                   1195: 
1.15      pazsan   1196: \+
1.1       anton    1197: 
1.65      anton    1198: >r     ( w -- R:w )            core    to_r
1.1       anton    1199: :
                   1200:  (>r) ;
                   1201: : (>r)  rp@ cell+ @ rp@ ! rp@ cell+ ! ;
                   1202: 
1.65      anton    1203: r>     ( R:w -- w )            core    r_from
1.1       anton    1204: :
                   1205:  rp@ cell+ @ rp@ @ rp@ cell+ ! (rdrop) rp@ ! ;
                   1206: Create (rdrop) ' ;s A,
                   1207: 
1.65      anton    1208: rdrop  ( R:w -- )              gforth
1.1       anton    1209: :
                   1210:  r> r> drop >r ;
                   1211: 
1.136     pazsan   1212: 2>r    ( d -- R:d )    core-ext        two_to_r
1.1       anton    1213: :
                   1214:  swap r> swap >r swap >r >r ;
                   1215: 
1.136     pazsan   1216: 2r>    ( R:d -- d )    core-ext        two_r_from
1.1       anton    1217: :
                   1218:  r> r> swap r> swap >r swap ;
                   1219: 
1.136     pazsan   1220: 2r@    ( R:d -- R:d d )        core-ext        two_r_fetch
1.1       anton    1221: :
                   1222:  i' j ;
                   1223: 
1.136     pazsan   1224: 2rdrop ( R:d -- )              gforth  two_r_drop
1.1       anton    1225: :
                   1226:  r> r> drop r> drop >r ;
                   1227: 
1.47      anton    1228: over   ( w1 w2 -- w1 w2 w1 )           core
1.1       anton    1229: :
                   1230:  sp@ cell+ @ ;
                   1231: 
1.47      anton    1232: drop   ( w -- )                core
1.1       anton    1233: :
                   1234:  IF THEN ;
                   1235: 
1.47      anton    1236: swap   ( w1 w2 -- w2 w1 )              core
1.1       anton    1237: :
                   1238:  >r (swap) ! r> (swap) @ ;
                   1239: Variable (swap)
                   1240: 
1.47      anton    1241: dup    ( w -- w w )            core    dupe
1.1       anton    1242: :
                   1243:  sp@ @ ;
                   1244: 
1.47      anton    1245: rot    ( w1 w2 w3 -- w2 w3 w1 )        core    rote
1.1       anton    1246: :
                   1247: [ defined? (swap) [IF] ]
                   1248:     (swap) ! (rot) ! >r (rot) @ (swap) @ r> ;
                   1249: Variable (rot)
                   1250: [ELSE] ]
                   1251:     >r swap r> swap ;
                   1252: [THEN]
                   1253: 
1.47      anton    1254: -rot   ( w1 w2 w3 -- w3 w1 w2 )        gforth  not_rote
1.1       anton    1255: :
                   1256:  rot rot ;
                   1257: 
1.47      anton    1258: nip    ( w1 w2 -- w2 )         core-ext
1.1       anton    1259: :
1.6       jwilke   1260:  swap drop ;
1.1       anton    1261: 
1.47      anton    1262: tuck   ( w1 w2 -- w2 w1 w2 )   core-ext
1.1       anton    1263: :
                   1264:  swap over ;
                   1265: 
1.47      anton    1266: ?dup   ( w -- w )                      core    question_dupe
1.52      anton    1267: ""Actually the stack effect is: @code{( w -- 0 | w w )}.  It performs a
                   1268: @code{dup} if w is nonzero.""
1.1       anton    1269: if (w!=0) {
1.64      anton    1270:   IF_spTOS(*sp-- = w;)
1.1       anton    1271: #ifndef USE_TOS
                   1272:   *--sp = w;
                   1273: #endif
                   1274: }
                   1275: :
                   1276:  dup IF dup THEN ;
                   1277: 
1.47      anton    1278: pick   ( u -- w )                      core-ext
1.52      anton    1279: ""Actually the stack effect is @code{ x0 ... xu u -- x0 ... xu x0 }.""
1.1       anton    1280: w = sp[u+1];
                   1281: :
                   1282:  1+ cells sp@ + @ ;
                   1283: 
1.47      anton    1284: 2drop  ( w1 w2 -- )            core    two_drop
1.1       anton    1285: :
                   1286:  drop drop ;
                   1287: 
1.47      anton    1288: 2dup   ( w1 w2 -- w1 w2 w1 w2 )        core    two_dupe
1.1       anton    1289: :
                   1290:  over over ;
                   1291: 
1.47      anton    1292: 2over  ( w1 w2 w3 w4 -- w1 w2 w3 w4 w1 w2 )    core    two_over
1.1       anton    1293: :
                   1294:  3 pick 3 pick ;
                   1295: 
1.47      anton    1296: 2swap  ( w1 w2 w3 w4 -- w3 w4 w1 w2 )  core    two_swap
1.1       anton    1297: :
                   1298:  rot >r rot r> ;
                   1299: 
1.47      anton    1300: 2rot   ( w1 w2 w3 w4 w5 w6 -- w3 w4 w5 w6 w1 w2 )      double-ext      two_rote
1.1       anton    1301: :
                   1302:  >r >r 2swap r> r> 2swap ;
                   1303: 
1.47      anton    1304: 2nip   ( w1 w2 w3 w4 -- w3 w4 )        gforth  two_nip
1.1       anton    1305: :
                   1306:  2swap 2drop ;
                   1307: 
1.47      anton    1308: 2tuck  ( w1 w2 w3 w4 -- w3 w4 w1 w2 w3 w4 )    gforth  two_tuck
1.1       anton    1309: :
                   1310:  2swap 2over ;
                   1311: 
                   1312: \ toggle is high-level: 0.11/0.42%
                   1313: 
1.110     pazsan   1314: \g memory
                   1315: 
1.47      anton    1316: @      ( a_addr -- w )         core    fetch
1.52      anton    1317: ""@i{w} is the cell stored at @i{a_addr}.""
1.1       anton    1318: w = *a_addr;
                   1319: 
1.112     pazsan   1320: \ lit@ / lit_fetch = lit @
                   1321: 
                   1322: lit@           ( #a_addr -- w ) new    lit_fetch
                   1323: w = *a_addr;
                   1324: 
1.47      anton    1325: !      ( w a_addr -- )         core    store
1.52      anton    1326: ""Store @i{w} into the cell at @i{a-addr}.""
1.1       anton    1327: *a_addr = w;
                   1328: 
1.47      anton    1329: +!     ( n a_addr -- )         core    plus_store
1.52      anton    1330: ""Add @i{n} to the cell at @i{a-addr}.""
1.1       anton    1331: *a_addr += n;
                   1332: :
                   1333:  tuck @ + swap ! ;
                   1334: 
1.47      anton    1335: c@     ( c_addr -- c )         core    c_fetch
1.52      anton    1336: ""@i{c} is the char stored at @i{c_addr}.""
1.1       anton    1337: c = *c_addr;
                   1338: :
                   1339: [ bigendian [IF] ]
                   1340:     [ cell>bit 4 = [IF] ]
                   1341:        dup [ 0 cell - ] Literal and @ swap 1 and
                   1342:        IF  $FF and  ELSE  8>>  THEN  ;
                   1343:     [ [ELSE] ]
                   1344:        dup [ cell 1- ] literal and
                   1345:        tuck - @ swap [ cell 1- ] literal xor
                   1346:        0 ?DO 8>> LOOP $FF and
                   1347:     [ [THEN] ]
                   1348: [ [ELSE] ]
                   1349:     [ cell>bit 4 = [IF] ]
                   1350:        dup [ 0 cell - ] Literal and @ swap 1 and
                   1351:        IF  8>>  ELSE  $FF and  THEN
                   1352:     [ [ELSE] ]
                   1353:        dup [ cell  1- ] literal and 
                   1354:        tuck - @ swap
                   1355:        0 ?DO 8>> LOOP 255 and
                   1356:     [ [THEN] ]
                   1357: [ [THEN] ]
                   1358: ;
                   1359: : 8>> 2/ 2/ 2/ 2/  2/ 2/ 2/ 2/ ;
                   1360: 
1.47      anton    1361: c!     ( c c_addr -- )         core    c_store
1.52      anton    1362: ""Store @i{c} into the char at @i{c-addr}.""
1.1       anton    1363: *c_addr = c;
                   1364: :
                   1365: [ bigendian [IF] ]
                   1366:     [ cell>bit 4 = [IF] ]
                   1367:        tuck 1 and IF  $FF and  ELSE  8<<  THEN >r
                   1368:        dup -2 and @ over 1 and cells masks + @ and
                   1369:        r> or swap -2 and ! ;
                   1370:        Create masks $00FF , $FF00 ,
                   1371:     [ELSE] ]
                   1372:        dup [ cell 1- ] literal and dup 
                   1373:        [ cell 1- ] literal xor >r
                   1374:        - dup @ $FF r@ 0 ?DO 8<< LOOP invert and
                   1375:        rot $FF and r> 0 ?DO 8<< LOOP or swap ! ;
                   1376:     [THEN]
                   1377: [ELSE] ]
                   1378:     [ cell>bit 4 = [IF] ]
                   1379:        tuck 1 and IF  8<<  ELSE  $FF and  THEN >r
                   1380:        dup -2 and @ over 1 and cells masks + @ and
                   1381:        r> or swap -2 and ! ;
                   1382:        Create masks $FF00 , $00FF ,
                   1383:     [ELSE] ]
                   1384:        dup [ cell 1- ] literal and dup >r
                   1385:        - dup @ $FF r@ 0 ?DO 8<< LOOP invert and
                   1386:        rot $FF and r> 0 ?DO 8<< LOOP or swap ! ;
                   1387:     [THEN]
                   1388: [THEN]
                   1389: : 8<< 2* 2* 2* 2*  2* 2* 2* 2* ;
                   1390: 
1.47      anton    1391: 2!     ( w1 w2 a_addr -- )             core    two_store
1.52      anton    1392: ""Store @i{w2} into the cell at @i{c-addr} and @i{w1} into the next cell.""
1.1       anton    1393: a_addr[0] = w2;
                   1394: a_addr[1] = w1;
                   1395: :
                   1396:  tuck ! cell+ ! ;
                   1397: 
1.47      anton    1398: 2@     ( a_addr -- w1 w2 )             core    two_fetch
1.52      anton    1399: ""@i{w2} is the content of the cell stored at @i{a-addr}, @i{w1} is
                   1400: the content of the next cell.""
1.1       anton    1401: w2 = a_addr[0];
                   1402: w1 = a_addr[1];
                   1403: :
                   1404:  dup cell+ @ swap @ ;
                   1405: 
1.47      anton    1406: cell+  ( a_addr1 -- a_addr2 )  core    cell_plus
1.52      anton    1407: ""@code{1 cells +}""
1.1       anton    1408: a_addr2 = a_addr1+1;
                   1409: :
                   1410:  cell + ;
                   1411: 
1.47      anton    1412: cells  ( n1 -- n2 )            core
1.52      anton    1413: "" @i{n2} is the number of address units of @i{n1} cells.""
1.1       anton    1414: n2 = n1 * sizeof(Cell);
                   1415: :
                   1416:  [ cell
                   1417:  2/ dup [IF] ] 2* [ [THEN]
                   1418:  2/ dup [IF] ] 2* [ [THEN]
                   1419:  2/ dup [IF] ] 2* [ [THEN]
                   1420:  2/ dup [IF] ] 2* [ [THEN]
                   1421:  drop ] ;
                   1422: 
1.47      anton    1423: char+  ( c_addr1 -- c_addr2 )  core    char_plus
1.52      anton    1424: ""@code{1 chars +}.""
1.1       anton    1425: c_addr2 = c_addr1 + 1;
                   1426: :
                   1427:  1+ ;
                   1428: 
1.47      anton    1429: (chars)        ( n1 -- n2 )    gforth  paren_chars
1.1       anton    1430: n2 = n1 * sizeof(Char);
                   1431: :
                   1432:  ;
                   1433: 
1.47      anton    1434: count  ( c_addr1 -- c_addr2 u )        core
1.56      anton    1435: ""@i{c-addr2} is the first character and @i{u} the length of the
                   1436: counted string at @i{c-addr1}.""
1.1       anton    1437: u = *c_addr1;
                   1438: c_addr2 = c_addr1+1;
                   1439: :
                   1440:  dup 1+ swap c@ ;
                   1441: 
1.110     pazsan   1442: \g compiler
                   1443: 
1.138     pazsan   1444: \+f83headerstring
                   1445: 
                   1446: (f83find)      ( c_addr u f83name1 -- f83name2 )       new     paren_f83find
                   1447: for (; f83name1 != NULL; f83name1 = (struct F83Name *)(f83name1->next))
                   1448:   if ((UCell)F83NAME_COUNT(f83name1)==u &&
                   1449:       memcasecmp(c_addr, f83name1->name, u)== 0 /* or inline? */)
                   1450:     break;
                   1451: f83name2=f83name1;
                   1452: :
                   1453:     BEGIN  dup WHILE  (find-samelen)  dup  WHILE
                   1454:        >r 2dup r@ cell+ char+ capscomp  0=
                   1455:        IF  2drop r>  EXIT  THEN
                   1456:        r> @
                   1457:     REPEAT  THEN  nip nip ;
                   1458: : (find-samelen) ( u f83name1 -- u f83name2/0 )
                   1459:     BEGIN  2dup cell+ c@ $1F and <> WHILE  @  dup 0= UNTIL  THEN ;
                   1460: : capscomp ( c_addr1 u c_addr2 -- n )
                   1461:  swap bounds
                   1462:  ?DO  dup c@ I c@ <>
                   1463:      IF  dup c@ toupper I c@ toupper =
                   1464:      ELSE  true  THEN  WHILE  1+  LOOP  drop 0
                   1465:  ELSE  c@ toupper I c@ toupper - unloop  THEN  sgn ;
                   1466: : sgn ( n -- -1/0/1 )
                   1467:  dup 0= IF EXIT THEN  0< 2* 1+ ;
                   1468: 
                   1469: \-
                   1470: 
1.112     pazsan   1471: (listlfind)    ( c_addr u longname1 -- longname2 )     new     paren_listlfind
1.125     anton    1472: longname2=listlfind(c_addr, u, longname1);
1.1       anton    1473: :
1.112     pazsan   1474:     BEGIN  dup WHILE  (findl-samelen)  dup  WHILE
                   1475:        >r 2dup r@ cell+ cell+ capscomp  0=
1.1       anton    1476:        IF  2drop r>  EXIT  THEN
                   1477:        r> @
                   1478:     REPEAT  THEN  nip nip ;
1.112     pazsan   1479: : (findl-samelen) ( u longname1 -- u longname2/0 )
                   1480:     BEGIN  2dup cell+ @ lcount-mask and <> WHILE  @  dup 0= UNTIL  THEN ;
1.144     pazsan   1481: : capscomp ( c_addr1 u c_addr2 -- n )
                   1482:  swap bounds
                   1483:  ?DO  dup c@ I c@ <>
                   1484:      IF  dup c@ toupper I c@ toupper =
                   1485:      ELSE  true  THEN  WHILE  1+  LOOP  drop 0
                   1486:  ELSE  c@ toupper I c@ toupper - unloop  THEN  sgn ;
                   1487: : sgn ( n -- -1/0/1 )
                   1488:  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton    1489: 
1.15      pazsan   1490: \+hash
1.1       anton    1491: 
1.112     pazsan   1492: (hashlfind)    ( c_addr u a_addr -- longname2 )        new     paren_hashlfind
1.125     anton    1493: longname2 = hashlfind(c_addr, u, a_addr);
1.1       anton    1494: :
                   1495:  BEGIN  dup  WHILE
1.112     pazsan   1496:         2@ >r >r dup r@ cell+ @ lcount-mask and =
                   1497:         IF  2dup r@ cell+ cell+ capscomp 0=
1.1       anton    1498:            IF  2drop r> rdrop  EXIT  THEN  THEN
                   1499:        rdrop r>
                   1500:  REPEAT nip nip ;
                   1501: 
1.112     pazsan   1502: (tablelfind)   ( c_addr u a_addr -- longname2 )        new     paren_tablelfind
1.1       anton    1503: ""A case-sensitive variant of @code{(hashfind)}""
1.125     anton    1504: longname2 = tablelfind(c_addr, u, a_addr);
1.1       anton    1505: :
                   1506:  BEGIN  dup  WHILE
1.112     pazsan   1507:         2@ >r >r dup r@ cell+ @ lcount-mask and =
                   1508:         IF  2dup r@ cell+ cell+ -text 0=
1.1       anton    1509:            IF  2drop r> rdrop  EXIT  THEN  THEN
                   1510:        rdrop r>
                   1511:  REPEAT nip nip ;
1.138     pazsan   1512: : -text ( c_addr1 u c_addr2 -- n )
                   1513:  swap bounds
                   1514:  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                   1515:  ELSE  c@ I c@ - unloop  THEN  sgn ;
                   1516: : sgn ( n -- -1/0/1 )
                   1517:  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton    1518: 
1.47      anton    1519: (hashkey1)     ( c_addr u ubits -- ukey )              gforth  paren_hashkey1
1.1       anton    1520: ""ukey is the hash key for the string c_addr u fitting in ubits bits""
1.125     anton    1521: ukey = hashkey1(c_addr, u, ubits);
1.1       anton    1522: :
                   1523:  dup rot-values + c@ over 1 swap lshift 1- >r
                   1524:  tuck - 2swap r> 0 2swap bounds
                   1525:  ?DO  dup 4 pick lshift swap 3 pick rshift or
                   1526:       I c@ toupper xor
                   1527:       over and  LOOP
                   1528:  nip nip nip ;
                   1529: Create rot-values
                   1530:   5 c, 0 c, 1 c, 2 c, 3 c,  4 c, 5 c, 5 c, 5 c, 5 c,
                   1531:   3 c, 5 c, 5 c, 5 c, 5 c,  7 c, 5 c, 5 c, 5 c, 5 c,
                   1532:   7 c, 5 c, 5 c, 5 c, 5 c,  6 c, 5 c, 5 c, 5 c, 5 c,
                   1533:   7 c, 5 c, 5 c,
1.138     pazsan   1534: 
                   1535: \+
1.1       anton    1536: 
1.15      pazsan   1537: \+
1.1       anton    1538: 
1.47      anton    1539: (parse-white)  ( c_addr1 u1 -- c_addr2 u2 )    gforth  paren_parse_white
1.125     anton    1540: struct Cellpair r=parse_white(c_addr1, u1);
                   1541: c_addr2 = (Char *)(r.n1);
                   1542: u2 = r.n2;
1.1       anton    1543: :
                   1544:  BEGIN  dup  WHILE  over c@ bl <=  WHILE  1 /string
                   1545:  REPEAT  THEN  2dup
                   1546:  BEGIN  dup  WHILE  over c@ bl >   WHILE  1 /string
                   1547:  REPEAT  THEN  nip - ;
                   1548: 
1.47      anton    1549: aligned        ( c_addr -- a_addr )    core
1.29      crook    1550: "" @i{a-addr} is the first aligned address greater than or equal to @i{c-addr}.""
1.1       anton    1551: a_addr = (Cell *)((((Cell)c_addr)+(sizeof(Cell)-1))&(-sizeof(Cell)));
                   1552: :
                   1553:  [ cell 1- ] Literal + [ -1 cells ] Literal and ;
                   1554: 
1.47      anton    1555: faligned       ( c_addr -- f_addr )    float   f_aligned
1.29      crook    1556: "" @i{f-addr} is the first float-aligned address greater than or equal to @i{c-addr}.""
1.1       anton    1557: f_addr = (Float *)((((Cell)c_addr)+(sizeof(Float)-1))&(-sizeof(Float)));
                   1558: :
                   1559:  [ 1 floats 1- ] Literal + [ -1 floats ] Literal and ;
                   1560: 
1.35      jwilke   1561: \ threading stuff is currently only interesting if we have a compiler
                   1562: \fhas? standardthreading has? compiler and [IF]
1.47      anton    1563: threading-method       ( -- n )        gforth  threading_method
1.1       anton    1564: ""0 if the engine is direct threaded. Note that this may change during
                   1565: the lifetime of an image.""
                   1566: #if defined(DOUBLY_INDIRECT)
                   1567: n=2;
                   1568: #else
                   1569: # if defined(DIRECT_THREADED)
                   1570: n=0;
                   1571: # else
                   1572: n=1;
                   1573: # endif
                   1574: #endif
                   1575: :
                   1576:  1 ;
1.28      jwilke   1577: 
1.35      jwilke   1578: \f[THEN]
1.1       anton    1579: 
1.83      pazsan   1580: \g hostos
                   1581: 
1.47      anton    1582: key-file       ( wfileid -- n )                gforth  paren_key_file
1.17      pazsan   1583: #ifdef HAS_FILE
1.1       anton    1584: fflush(stdout);
1.12      pazsan   1585: n = key((FILE*)wfileid);
1.17      pazsan   1586: #else
                   1587: n = key(stdin);
                   1588: #endif
1.1       anton    1589: 
1.47      anton    1590: key?-file      ( wfileid -- n )                facility        key_q_file
1.17      pazsan   1591: #ifdef HAS_FILE
1.1       anton    1592: fflush(stdout);
1.12      pazsan   1593: n = key_query((FILE*)wfileid);
1.17      pazsan   1594: #else
                   1595: n = key_query(stdin);
                   1596: #endif
                   1597: 
                   1598: \+os
1.12      pazsan   1599: 
1.47      anton    1600: stdin  ( -- wfileid )  gforth
1.12      pazsan   1601: wfileid = (Cell)stdin;
1.1       anton    1602: 
1.47      anton    1603: stdout ( -- wfileid )  gforth
1.1       anton    1604: wfileid = (Cell)stdout;
                   1605: 
1.47      anton    1606: stderr ( -- wfileid )  gforth
1.1       anton    1607: wfileid = (Cell)stderr;
                   1608: 
1.47      anton    1609: form   ( -- urows ucols )      gforth
1.1       anton    1610: ""The number of lines and columns in the terminal. These numbers may change
                   1611: with the window size.""
                   1612: /* we could block SIGWINCH here to get a consistent size, but I don't
                   1613:  think this is necessary or always beneficial */
                   1614: urows=rows;
                   1615: ucols=cols;
                   1616: 
1.47      anton    1617: flush-icache   ( c_addr u -- ) gforth  flush_icache
1.1       anton    1618: ""Make sure that the instruction cache of the processor (if there is
1.29      crook    1619: one) does not contain stale data at @i{c-addr} and @i{u} bytes
1.1       anton    1620: afterwards. @code{END-CODE} performs a @code{flush-icache}
                   1621: automatically. Caveat: @code{flush-icache} might not work on your
                   1622: installation; this is usually the case if direct threading is not
                   1623: supported on your machine (take a look at your @file{machine.h}) and
                   1624: your machine has a separate instruction cache. In such cases,
                   1625: @code{flush-icache} does nothing instead of flushing the instruction
                   1626: cache.""
                   1627: FLUSH_ICACHE(c_addr,u);
                   1628: 
1.47      anton    1629: (bye)  ( n -- )        gforth  paren_bye
1.77      anton    1630: SUPER_END;
1.1       anton    1631: return (Label *)n;
                   1632: 
1.125     anton    1633: (system)       ( c_addr u -- wretval wior )    gforth  paren_system
1.155     anton    1634: wretval = gforth_system(c_addr, u);  
1.1       anton    1635: wior = IOR(wretval==-1 || (wretval==127 && errno != 0));
                   1636: 
1.47      anton    1637: getenv ( c_addr1 u1 -- c_addr2 u2 )    gforth
1.29      crook    1638: ""The string @i{c-addr1 u1} specifies an environment variable. The string @i{c-addr2 u2}
1.24      crook    1639: is the host operating system's expansion of that environment variable. If the
1.29      crook    1640: environment variable does not exist, @i{c-addr2 u2} specifies a string 0 characters
1.24      crook    1641: in length.""
1.46      pazsan   1642: /* close ' to keep fontify happy */
1.1       anton    1643: c_addr2 = getenv(cstr(c_addr1,u1,1));
                   1644: u2 = (c_addr2 == NULL ? 0 : strlen(c_addr2));
                   1645: 
1.56      anton    1646: open-pipe      ( c_addr u wfam -- wfileid wior )       gforth  open_pipe
1.84      pazsan   1647: wfileid=(Cell)popen(cstr(c_addr,u,1),pfileattr[wfam]); /* ~ expansion of 1st arg? */
1.1       anton    1648: wior = IOR(wfileid==0); /* !! the man page says that errno is not set reliably */
                   1649: 
1.47      anton    1650: close-pipe     ( wfileid -- wretval wior )             gforth  close_pipe
1.1       anton    1651: wretval = pclose((FILE *)wfileid);
                   1652: wior = IOR(wretval==-1);
                   1653: 
1.47      anton    1654: time&date      ( -- nsec nmin nhour nday nmonth nyear )        facility-ext    time_and_date
1.44      crook    1655: ""Report the current time of day. Seconds, minutes and hours are numbered from 0.
                   1656: Months are numbered from 1.""
1.127     anton    1657: #if 1
                   1658: time_t now;
                   1659: struct tm *ltime;
                   1660: time(&now);
                   1661: ltime=localtime(&now);
                   1662: #else
1.1       anton    1663: struct timeval time1;
                   1664: struct timezone zone1;
                   1665: struct tm *ltime;
                   1666: gettimeofday(&time1,&zone1);
1.51      anton    1667: /* !! Single Unix specification: 
                   1668:    If tzp is not a null pointer, the behaviour is unspecified. */
1.1       anton    1669: ltime=localtime((time_t *)&time1.tv_sec);
1.127     anton    1670: #endif
1.1       anton    1671: nyear =ltime->tm_year+1900;
                   1672: nmonth=ltime->tm_mon+1;
                   1673: nday  =ltime->tm_mday;
                   1674: nhour =ltime->tm_hour;
                   1675: nmin  =ltime->tm_min;
                   1676: nsec  =ltime->tm_sec;
                   1677: 
1.47      anton    1678: ms     ( n -- )        facility-ext
1.44      crook    1679: ""Wait at least @i{n} milli-second.""
1.1       anton    1680: struct timeval timeout;
                   1681: timeout.tv_sec=n/1000;
                   1682: timeout.tv_usec=1000*(n%1000);
                   1683: (void)select(0,0,0,0,&timeout);
                   1684: 
1.47      anton    1685: allocate       ( u -- a_addr wior )    memory
1.29      crook    1686: ""Allocate @i{u} address units of contiguous data space. The initial
1.27      crook    1687: contents of the data space is undefined. If the allocation is successful,
1.29      crook    1688: @i{a-addr} is the start address of the allocated region and @i{wior}
                   1689: is 0. If the allocation fails, @i{a-addr} is undefined and @i{wior}
1.52      anton    1690: is a non-zero I/O result code.""
1.1       anton    1691: a_addr = (Cell *)malloc(u?u:1);
                   1692: wior = IOR(a_addr==NULL);
                   1693: 
1.47      anton    1694: free   ( a_addr -- wior )              memory
1.29      crook    1695: ""Return the region of data space starting at @i{a-addr} to the system.
1.52      anton    1696: The region must originally have been obtained using @code{allocate} or
1.29      crook    1697: @code{resize}. If the operational is successful, @i{wior} is 0.
1.52      anton    1698: If the operation fails, @i{wior} is a non-zero I/O result code.""
1.1       anton    1699: free(a_addr);
                   1700: wior = 0;
                   1701: 
1.47      anton    1702: resize ( a_addr1 u -- a_addr2 wior )   memory
1.26      crook    1703: ""Change the size of the allocated area at @i{a-addr1} to @i{u}
1.1       anton    1704: address units, possibly moving the contents to a different
1.27      crook    1705: area. @i{a-addr2} is the address of the resulting area.
1.52      anton    1706: If the operation is successful, @i{wior} is 0.
                   1707: If the operation fails, @i{wior} is a non-zero
1.29      crook    1708: I/O result code. If @i{a-addr1} is 0, Gforth's (but not the Standard)
1.27      crook    1709: @code{resize} @code{allocate}s @i{u} address units.""
1.1       anton    1710: /* the following check is not necessary on most OSs, but it is needed
                   1711:    on SunOS 4.1.2. */
1.46      pazsan   1712: /* close ' to keep fontify happy */
1.1       anton    1713: if (a_addr1==NULL)
                   1714:   a_addr2 = (Cell *)malloc(u);
                   1715: else
                   1716:   a_addr2 = (Cell *)realloc(a_addr1, u);
                   1717: wior = IOR(a_addr2==NULL);     /* !! Define a return code */
                   1718: 
1.47      anton    1719: strerror       ( n -- c_addr u )       gforth
1.1       anton    1720: c_addr = strerror(n);
                   1721: u = strlen(c_addr);
                   1722: 
1.47      anton    1723: strsignal      ( n -- c_addr u )       gforth
1.133     anton    1724: c_addr = (Address)strsignal(n);
1.1       anton    1725: u = strlen(c_addr);
                   1726: 
1.47      anton    1727: call-c ( w -- )        gforth  call_c
1.1       anton    1728: ""Call the C function pointed to by @i{w}. The C function has to
                   1729: access the stack itself. The stack pointers are exported in the global
                   1730: variables @code{SP} and @code{FP}.""
                   1731: /* This is a first attempt at support for calls to C. This may change in
                   1732:    the future */
1.64      anton    1733: IF_fpTOS(fp[0]=fpTOS);
1.1       anton    1734: FP=fp;
                   1735: SP=sp;
                   1736: ((void (*)())w)();
                   1737: sp=SP;
                   1738: fp=FP;
1.64      anton    1739: IF_spTOS(spTOS=sp[0]);
                   1740: IF_fpTOS(fpTOS=fp[0]);
1.1       anton    1741: 
1.15      pazsan   1742: \+
                   1743: \+file
1.1       anton    1744: 
1.47      anton    1745: close-file     ( wfileid -- wior )             file    close_file
1.1       anton    1746: wior = IOR(fclose((FILE *)wfileid)==EOF);
                   1747: 
1.56      anton    1748: open-file      ( c_addr u wfam -- wfileid wior )       file    open_file
                   1749: wfileid = (Cell)fopen(tilde_cstr(c_addr, u, 1), fileattr[wfam]);
1.22      crook    1750: wior =  IOR(wfileid == 0);
1.1       anton    1751: 
1.56      anton    1752: create-file    ( c_addr u wfam -- wfileid wior )       file    create_file
1.1       anton    1753: Cell   fd;
1.56      anton    1754: fd = open(tilde_cstr(c_addr, u, 1), O_CREAT|O_TRUNC|ufileattr[wfam], 0666);
1.1       anton    1755: if (fd != -1) {
1.56      anton    1756:   wfileid = (Cell)fdopen(fd, fileattr[wfam]);
1.22      crook    1757:   wior = IOR(wfileid == 0);
1.1       anton    1758: } else {
1.22      crook    1759:   wfileid = 0;
1.1       anton    1760:   wior = IOR(1);
                   1761: }
                   1762: 
1.47      anton    1763: delete-file    ( c_addr u -- wior )            file    delete_file
1.1       anton    1764: wior = IOR(unlink(tilde_cstr(c_addr, u, 1))==-1);
                   1765: 
1.47      anton    1766: rename-file    ( c_addr1 u1 c_addr2 u2 -- wior )       file-ext        rename_file
1.29      crook    1767: ""Rename file @i{c_addr1 u1} to new name @i{c_addr2 u2}""
1.125     anton    1768: wior = rename_file(c_addr1, u1, c_addr2, u2);
1.1       anton    1769: 
1.47      anton    1770: file-position  ( wfileid -- ud wior )  file    file_position
1.1       anton    1771: /* !! use tell and lseek? */
1.108     anton    1772: ud = OFF2UD(ftello((FILE *)wfileid));
                   1773: wior = IOR(UD2OFF(ud)==-1);
1.1       anton    1774: 
1.47      anton    1775: reposition-file        ( ud wfileid -- wior )  file    reposition_file
1.108     anton    1776: wior = IOR(fseeko((FILE *)wfileid, UD2OFF(ud), SEEK_SET)==-1);
1.1       anton    1777: 
1.47      anton    1778: file-size      ( wfileid -- ud wior )  file    file_size
1.1       anton    1779: struct stat buf;
                   1780: wior = IOR(fstat(fileno((FILE *)wfileid), &buf)==-1);
1.108     anton    1781: ud = OFF2UD(buf.st_size);
1.1       anton    1782: 
1.47      anton    1783: resize-file    ( ud wfileid -- wior )  file    resize_file
1.108     anton    1784: wior = IOR(ftruncate(fileno((FILE *)wfileid), UD2OFF(ud))==-1);
1.1       anton    1785: 
1.47      anton    1786: read-file      ( c_addr u1 wfileid -- u2 wior )        file    read_file
1.1       anton    1787: /* !! fread does not guarantee enough */
                   1788: u2 = fread(c_addr, sizeof(Char), u1, (FILE *)wfileid);
                   1789: wior = FILEIO(u2<u1 && ferror((FILE *)wfileid));
                   1790: /* !! is the value of ferror errno-compatible? */
                   1791: if (wior)
                   1792:   clearerr((FILE *)wfileid);
                   1793: 
1.125     anton    1794: (read-line)    ( c_addr u1 wfileid -- u2 flag u3 wior ) file   paren_read_line
                   1795: struct Cellquad r = read_line(c_addr, u1, wfileid);
                   1796: u2   = r.n1;
                   1797: flag = r.n2;
                   1798: u3   = r.n3;
                   1799: wior = r.n4;
1.1       anton    1800: 
1.15      pazsan   1801: \+
1.1       anton    1802: 
1.47      anton    1803: write-file     ( c_addr u1 wfileid -- wior )   file    write_file
1.1       anton    1804: /* !! fwrite does not guarantee enough */
1.39      pazsan   1805: #ifdef HAS_FILE
1.1       anton    1806: {
                   1807:   UCell u2 = fwrite(c_addr, sizeof(Char), u1, (FILE *)wfileid);
                   1808:   wior = FILEIO(u2<u1 && ferror((FILE *)wfileid));
                   1809:   if (wior)
                   1810:     clearerr((FILE *)wfileid);
                   1811: }
1.39      pazsan   1812: #else
                   1813: TYPE(c_addr, u1);
                   1814: #endif
1.17      pazsan   1815: 
1.47      anton    1816: emit-file      ( c wfileid -- wior )   gforth  emit_file
1.17      pazsan   1817: #ifdef HAS_FILE
1.1       anton    1818: wior = FILEIO(putc(c, (FILE *)wfileid)==EOF);
                   1819: if (wior)
                   1820:   clearerr((FILE *)wfileid);
1.17      pazsan   1821: #else
1.36      pazsan   1822: PUTC(c);
1.17      pazsan   1823: #endif
1.1       anton    1824: 
1.15      pazsan   1825: \+file
1.1       anton    1826: 
1.47      anton    1827: flush-file     ( wfileid -- wior )             file-ext        flush_file
1.1       anton    1828: wior = IOR(fflush((FILE *) wfileid)==EOF);
                   1829: 
1.56      anton    1830: file-status    ( c_addr u -- wfam wior )       file-ext        file_status
1.125     anton    1831: struct Cellpair r = file_status(c_addr, u);
                   1832: wfam = r.n1;
                   1833: wior = r.n2;
1.1       anton    1834: 
1.112     pazsan   1835: file-eof?      ( wfileid -- flag )     gforth  file_eof_query
                   1836: flag = FLAG(feof((FILE *) wfileid));
1.1       anton    1837: 
1.112     pazsan   1838: open-dir       ( c_addr u -- wdirid wior )     gforth  open_dir
                   1839: ""Open the directory specified by @i{c-addr, u}
                   1840: and return @i{dir-id} for futher access to it.""
                   1841: wdirid = (Cell)opendir(tilde_cstr(c_addr, u, 1));
                   1842: wior =  IOR(wdirid == 0);
                   1843: 
                   1844: read-dir       ( c_addr u1 wdirid -- u2 flag wior )    gforth  read_dir
                   1845: ""Attempt to read the next entry from the directory specified
                   1846: by @i{dir-id} to the buffer of length @i{u1} at address @i{c-addr}. 
                   1847: If the attempt fails because there is no more entries,
                   1848: @i{ior}=0, @i{flag}=0, @i{u2}=0, and the buffer is unmodified.
                   1849: If the attempt to read the next entry fails because of any other reason, 
                   1850: return @i{ior}<>0.
                   1851: If the attempt succeeds, store file name to the buffer at @i{c-addr}
                   1852: and return @i{ior}=0, @i{flag}=true and @i{u2} equal to the size of the file name.
                   1853: If the length of the file name is greater than @i{u1}, 
                   1854: store first @i{u1} characters from file name into the buffer and
                   1855: indicate "name too long" with @i{ior}, @i{flag}=true, and @i{u2}=@i{u1}.""
                   1856: struct dirent * dent;
                   1857: dent = readdir((DIR *)wdirid);
                   1858: wior = 0;
                   1859: flag = -1;
                   1860: if(dent == NULL) {
                   1861:   u2 = 0;
                   1862:   flag = 0;
                   1863: } else {
                   1864:   u2 = strlen(dent->d_name);
                   1865:   if(u2 > u1) {
                   1866:     u2 = u1;
                   1867:     wior = -512-ENAMETOOLONG;
                   1868:   }
                   1869:   memmove(c_addr, dent->d_name, u2);
                   1870: }
                   1871: 
                   1872: close-dir      ( wdirid -- wior )      gforth  close_dir
                   1873: ""Close the directory specified by @i{dir-id}.""
                   1874: wior = IOR(closedir((DIR *)wdirid));
                   1875: 
                   1876: filename-match ( c_addr1 u1 c_addr2 u2 -- flag )       gforth  match_file
                   1877: char * string = cstr(c_addr1, u1, 1);
                   1878: char * pattern = cstr(c_addr2, u2, 0);
                   1879: flag = FLAG(!fnmatch(pattern, string, 0));
                   1880: 
1.157     pazsan   1881: set-dir        ( c_addr u -- wior )    gforth set_dir
                   1882: ""Change the current directory to @i{c-addr, u}.
                   1883: Return an error if this is not possible""
                   1884: wior = IOR(chdir(tilde_cstr(c_addr, u, 1)));
                   1885: 
                   1886: get-dir        ( c_addr1 u1 -- c_addr2 u2 )    gforth get_dir
                   1887: ""Store the current directory in the buffer specified by @{c-addr1, u1}.
                   1888: If the buffer size is not sufficient, return 0 0""
                   1889: c_addr2 = getcwd(c_addr1, u1);
                   1890: if(c_addr2 != NULL) {
                   1891:   u2 = strlen(c_addr2);
                   1892: } else {
                   1893:   u2 = 0;
                   1894: }
                   1895: 
1.112     pazsan   1896: \+
                   1897: 
                   1898: newline        ( -- c_addr u ) gforth
                   1899: ""String containing the newline sequence of the host OS""
                   1900: char newline[] = {
1.115     anton    1901: #if DIRSEP=='/'
                   1902: /* Unix */
1.112     pazsan   1903: '\n'
                   1904: #else
1.115     anton    1905: /* DOS, Win, OS/2 */
1.112     pazsan   1906: '\r','\n'
                   1907: #endif
                   1908: };
                   1909: c_addr=newline;
                   1910: u=sizeof(newline);
                   1911: :
                   1912:  "newline count ;
                   1913: Create "newline e? crlf [IF] 2 c, $0D c, [ELSE] 1 c, [THEN] $0A c,
                   1914: 
                   1915: \+os
                   1916: 
                   1917: utime  ( -- dtime )    gforth
                   1918: ""Report the current time in microseconds since some epoch.""
                   1919: struct timeval time1;
                   1920: gettimeofday(&time1,NULL);
                   1921: dtime = timeval2us(&time1);
                   1922: 
                   1923: cputime ( -- duser dsystem ) gforth
                   1924: ""duser and dsystem are the respective user- and system-level CPU
                   1925: times used since the start of the Forth system (excluding child
                   1926: processes), in microseconds (the granularity may be much larger,
                   1927: however).  On platforms without the getrusage call, it reports elapsed
                   1928: time (since some epoch) for duser and 0 for dsystem.""
                   1929: #ifdef HAVE_GETRUSAGE
                   1930: struct rusage usage;
                   1931: getrusage(RUSAGE_SELF, &usage);
                   1932: duser = timeval2us(&usage.ru_utime);
                   1933: dsystem = timeval2us(&usage.ru_stime);
                   1934: #else
                   1935: struct timeval time1;
                   1936: gettimeofday(&time1,NULL);
                   1937: duser = timeval2us(&time1);
1.158     pazsan   1938: dsystem = DZERO;
1.112     pazsan   1939: #endif
                   1940: 
                   1941: \+
                   1942: 
                   1943: \+floating
                   1944: 
                   1945: \g floating
1.83      pazsan   1946: 
1.1       anton    1947: comparisons(f, r1 r2, f_, r1, r2, gforth, gforth, float, gforth)
                   1948: comparisons(f0, r, f_zero_, r, 0., float, gforth, float, gforth)
                   1949: 
1.47      anton    1950: d>f    ( d -- r )              float   d_to_f
1.158     pazsan   1951: #ifdef BUGGY_LL_D2F
1.1       anton    1952: extern double ldexp(double x, int exp);
1.158     pazsan   1953: if (DHI(d)<0) {
                   1954: #ifdef BUGGY_LL_ADD
1.113     anton    1955:   DCell d2=dnegate(d);
1.158     pazsan   1956: #else
                   1957:   DCell d2=-d;
                   1958: #endif
                   1959:   r = -(ldexp((Float)DHI(d2),CELL_BITS) + (Float)DLO(d2));
1.113     anton    1960: } else
1.158     pazsan   1961:   r = ldexp((Float)DHI(d),CELL_BITS) + (Float)DLO(d);
1.1       anton    1962: #else
                   1963: r = d;
                   1964: #endif
                   1965: 
1.47      anton    1966: f>d    ( r -- d )              float   f_to_d
1.100     pazsan   1967: extern DCell double2ll(Float r);
                   1968: d = double2ll(r);
1.1       anton    1969: 
1.47      anton    1970: f!     ( r f_addr -- ) float   f_store
1.52      anton    1971: ""Store @i{r} into the float at address @i{f-addr}.""
1.1       anton    1972: *f_addr = r;
                   1973: 
1.47      anton    1974: f@     ( f_addr -- r ) float   f_fetch
1.52      anton    1975: ""@i{r} is the float at address @i{f-addr}.""
1.1       anton    1976: r = *f_addr;
                   1977: 
1.47      anton    1978: df@    ( df_addr -- r )        float-ext       d_f_fetch
1.52      anton    1979: ""Fetch the double-precision IEEE floating-point value @i{r} from the address @i{df-addr}.""
1.1       anton    1980: #ifdef IEEE_FP
                   1981: r = *df_addr;
                   1982: #else
                   1983: !! df@
                   1984: #endif
                   1985: 
1.47      anton    1986: df!    ( r df_addr -- )        float-ext       d_f_store
1.52      anton    1987: ""Store @i{r} as double-precision IEEE floating-point value to the
                   1988: address @i{df-addr}.""
1.1       anton    1989: #ifdef IEEE_FP
                   1990: *df_addr = r;
                   1991: #else
                   1992: !! df!
                   1993: #endif
                   1994: 
1.47      anton    1995: sf@    ( sf_addr -- r )        float-ext       s_f_fetch
1.52      anton    1996: ""Fetch the single-precision IEEE floating-point value @i{r} from the address @i{sf-addr}.""
1.1       anton    1997: #ifdef IEEE_FP
                   1998: r = *sf_addr;
                   1999: #else
                   2000: !! sf@
                   2001: #endif
                   2002: 
1.47      anton    2003: sf!    ( r sf_addr -- )        float-ext       s_f_store
1.52      anton    2004: ""Store @i{r} as single-precision IEEE floating-point value to the
                   2005: address @i{sf-addr}.""
1.1       anton    2006: #ifdef IEEE_FP
                   2007: *sf_addr = r;
                   2008: #else
                   2009: !! sf!
                   2010: #endif
                   2011: 
1.47      anton    2012: f+     ( r1 r2 -- r3 ) float   f_plus
1.1       anton    2013: r3 = r1+r2;
                   2014: 
1.47      anton    2015: f-     ( r1 r2 -- r3 ) float   f_minus
1.1       anton    2016: r3 = r1-r2;
                   2017: 
1.47      anton    2018: f*     ( r1 r2 -- r3 ) float   f_star
1.1       anton    2019: r3 = r1*r2;
                   2020: 
1.47      anton    2021: f/     ( r1 r2 -- r3 ) float   f_slash
1.1       anton    2022: r3 = r1/r2;
                   2023: 
1.47      anton    2024: f**    ( r1 r2 -- r3 ) float-ext       f_star_star
1.26      crook    2025: ""@i{r3} is @i{r1} raised to the @i{r2}th power.""
1.1       anton    2026: r3 = pow(r1,r2);
                   2027: 
1.47      anton    2028: fnegate        ( r1 -- r2 )    float   f_negate
1.1       anton    2029: r2 = - r1;
                   2030: 
1.47      anton    2031: fdrop  ( r -- )                float   f_drop
1.1       anton    2032: 
1.47      anton    2033: fdup   ( r -- r r )    float   f_dupe
1.1       anton    2034: 
1.47      anton    2035: fswap  ( r1 r2 -- r2 r1 )      float   f_swap
1.1       anton    2036: 
1.47      anton    2037: fover  ( r1 r2 -- r1 r2 r1 )   float   f_over
1.1       anton    2038: 
1.47      anton    2039: frot   ( r1 r2 r3 -- r2 r3 r1 )        float   f_rote
1.1       anton    2040: 
1.47      anton    2041: fnip   ( r1 r2 -- r2 ) gforth  f_nip
1.1       anton    2042: 
1.47      anton    2043: ftuck  ( r1 r2 -- r2 r1 r2 )   gforth  f_tuck
1.1       anton    2044: 
1.47      anton    2045: float+ ( f_addr1 -- f_addr2 )  float   float_plus
1.52      anton    2046: ""@code{1 floats +}.""
1.1       anton    2047: f_addr2 = f_addr1+1;
                   2048: 
1.47      anton    2049: floats ( n1 -- n2 )    float
1.52      anton    2050: ""@i{n2} is the number of address units of @i{n1} floats.""
1.1       anton    2051: n2 = n1*sizeof(Float);
                   2052: 
1.47      anton    2053: floor  ( r1 -- r2 )    float
1.26      crook    2054: ""Round towards the next smaller integral value, i.e., round toward negative infinity.""
1.1       anton    2055: /* !! unclear wording */
                   2056: r2 = floor(r1);
                   2057: 
1.105     anton    2058: fround ( r1 -- r2 )    gforth  f_round
                   2059: ""Round to the nearest integral value.""
1.1       anton    2060: r2 = rint(r1);
                   2061: 
1.47      anton    2062: fmax   ( r1 r2 -- r3 ) float   f_max
1.1       anton    2063: if (r1<r2)
                   2064:   r3 = r2;
                   2065: else
                   2066:   r3 = r1;
                   2067: 
1.47      anton    2068: fmin   ( r1 r2 -- r3 ) float   f_min
1.1       anton    2069: if (r1<r2)
                   2070:   r3 = r1;
                   2071: else
                   2072:   r3 = r2;
                   2073: 
1.47      anton    2074: represent      ( r c_addr u -- n f1 f2 )       float
1.1       anton    2075: char *sig;
1.122     anton    2076: size_t siglen;
1.1       anton    2077: int flag;
                   2078: int decpt;
                   2079: sig=ecvt(r, u, &decpt, &flag);
1.122     anton    2080: n=(r==0. ? 1 : decpt);
1.1       anton    2081: f1=FLAG(flag!=0);
1.21      anton    2082: f2=FLAG(isdigit((unsigned)(sig[0]))!=0);
1.122     anton    2083: siglen=strlen(sig);
1.124     anton    2084: if (siglen>u) /* happens in glibc-2.1.3 if 999.. is rounded up */
                   2085:   siglen=u;
1.122     anton    2086: memcpy(c_addr,sig,siglen);
1.123     anton    2087: memset(c_addr+siglen,f2?'0':' ',u-siglen);
1.1       anton    2088: 
1.47      anton    2089: >float ( c_addr u -- flag )    float   to_float
1.56      anton    2090: ""Actual stack effect: ( c_addr u -- r t | f ).  Attempt to convert the
                   2091: character string @i{c-addr u} to internal floating-point
                   2092: representation. If the string represents a valid floating-point number
                   2093: @i{r} is placed on the floating-point stack and @i{flag} is
                   2094: true. Otherwise, @i{flag} is false. A string of blanks is a special
                   2095: case and represents the floating-point number 0.""
1.1       anton    2096: Float r;
1.125     anton    2097: flag = to_float(c_addr, u, &r);
                   2098: if (flag) {
                   2099:   IF_fpTOS(fp[0] = fpTOS);
                   2100:   fp += -1;
                   2101:   fpTOS = r;
1.1       anton    2102: }
                   2103: 
1.47      anton    2104: fabs   ( r1 -- r2 )    float-ext       f_abs
1.1       anton    2105: r2 = fabs(r1);
                   2106: 
1.47      anton    2107: facos  ( r1 -- r2 )    float-ext       f_a_cos
1.1       anton    2108: r2 = acos(r1);
                   2109: 
1.47      anton    2110: fasin  ( r1 -- r2 )    float-ext       f_a_sine
1.1       anton    2111: r2 = asin(r1);
                   2112: 
1.47      anton    2113: fatan  ( r1 -- r2 )    float-ext       f_a_tan
1.1       anton    2114: r2 = atan(r1);
                   2115: 
1.47      anton    2116: fatan2 ( r1 r2 -- r3 ) float-ext       f_a_tan_two
1.26      crook    2117: ""@i{r1/r2}=tan(@i{r3}). ANS Forth does not require, but probably
1.1       anton    2118: intends this to be the inverse of @code{fsincos}. In gforth it is.""
                   2119: r3 = atan2(r1,r2);
                   2120: 
1.47      anton    2121: fcos   ( r1 -- r2 )    float-ext       f_cos
1.1       anton    2122: r2 = cos(r1);
                   2123: 
1.47      anton    2124: fexp   ( r1 -- r2 )    float-ext       f_e_x_p
1.1       anton    2125: r2 = exp(r1);
                   2126: 
1.47      anton    2127: fexpm1 ( r1 -- r2 )    float-ext       f_e_x_p_m_one
1.1       anton    2128: ""@i{r2}=@i{e}**@i{r1}@minus{}1""
                   2129: #ifdef HAVE_EXPM1
1.3       pazsan   2130: extern double
                   2131: #ifdef NeXT
                   2132:               const
                   2133: #endif
                   2134:                     expm1(double);
1.1       anton    2135: r2 = expm1(r1);
                   2136: #else
                   2137: r2 = exp(r1)-1.;
                   2138: #endif
                   2139: 
1.47      anton    2140: fln    ( r1 -- r2 )    float-ext       f_l_n
1.1       anton    2141: r2 = log(r1);
                   2142: 
1.47      anton    2143: flnp1  ( r1 -- r2 )    float-ext       f_l_n_p_one
1.1       anton    2144: ""@i{r2}=ln(@i{r1}+1)""
                   2145: #ifdef HAVE_LOG1P
1.3       pazsan   2146: extern double
                   2147: #ifdef NeXT
                   2148:               const
                   2149: #endif
                   2150:                     log1p(double);
1.1       anton    2151: r2 = log1p(r1);
                   2152: #else
                   2153: r2 = log(r1+1.);
                   2154: #endif
                   2155: 
1.47      anton    2156: flog   ( r1 -- r2 )    float-ext       f_log
1.26      crook    2157: ""The decimal logarithm.""
1.1       anton    2158: r2 = log10(r1);
                   2159: 
1.47      anton    2160: falog  ( r1 -- r2 )    float-ext       f_a_log
1.1       anton    2161: ""@i{r2}=10**@i{r1}""
                   2162: extern double pow10(double);
                   2163: r2 = pow10(r1);
                   2164: 
1.47      anton    2165: fsin   ( r1 -- r2 )    float-ext       f_sine
1.1       anton    2166: r2 = sin(r1);
                   2167: 
1.47      anton    2168: fsincos        ( r1 -- r2 r3 ) float-ext       f_sine_cos
1.1       anton    2169: ""@i{r2}=sin(@i{r1}), @i{r3}=cos(@i{r1})""
                   2170: r2 = sin(r1);
                   2171: r3 = cos(r1);
                   2172: 
1.47      anton    2173: fsqrt  ( r1 -- r2 )    float-ext       f_square_root
1.1       anton    2174: r2 = sqrt(r1);
                   2175: 
1.47      anton    2176: ftan   ( r1 -- r2 )    float-ext       f_tan
1.1       anton    2177: r2 = tan(r1);
                   2178: :
                   2179:  fsincos f/ ;
                   2180: 
1.47      anton    2181: fsinh  ( r1 -- r2 )    float-ext       f_cinch
1.1       anton    2182: r2 = sinh(r1);
                   2183: :
                   2184:  fexpm1 fdup fdup 1. d>f f+ f/ f+ f2/ ;
                   2185: 
1.47      anton    2186: fcosh  ( r1 -- r2 )    float-ext       f_cosh
1.1       anton    2187: r2 = cosh(r1);
                   2188: :
                   2189:  fexp fdup 1/f f+ f2/ ;
                   2190: 
1.47      anton    2191: ftanh  ( r1 -- r2 )    float-ext       f_tan_h
1.1       anton    2192: r2 = tanh(r1);
                   2193: :
                   2194:  f2* fexpm1 fdup 2. d>f f+ f/ ;
                   2195: 
1.47      anton    2196: fasinh ( r1 -- r2 )    float-ext       f_a_cinch
1.1       anton    2197: r2 = asinh(r1);
                   2198: :
                   2199:  fdup fdup f* 1. d>f f+ fsqrt f/ fatanh ;
                   2200: 
1.47      anton    2201: facosh ( r1 -- r2 )    float-ext       f_a_cosh
1.1       anton    2202: r2 = acosh(r1);
                   2203: :
                   2204:  fdup fdup f* 1. d>f f- fsqrt f+ fln ;
                   2205: 
1.47      anton    2206: fatanh ( r1 -- r2 )    float-ext       f_a_tan_h
1.1       anton    2207: r2 = atanh(r1);
                   2208: :
                   2209:  fdup f0< >r fabs 1. d>f fover f- f/  f2* flnp1 f2/
                   2210:  r> IF  fnegate  THEN ;
                   2211: 
1.47      anton    2212: sfloats        ( n1 -- n2 )    float-ext       s_floats
1.52      anton    2213: ""@i{n2} is the number of address units of @i{n1}
1.29      crook    2214: single-precision IEEE floating-point numbers.""
1.1       anton    2215: n2 = n1*sizeof(SFloat);
                   2216: 
1.47      anton    2217: dfloats        ( n1 -- n2 )    float-ext       d_floats
1.52      anton    2218: ""@i{n2} is the number of address units of @i{n1}
1.29      crook    2219: double-precision IEEE floating-point numbers.""
1.1       anton    2220: n2 = n1*sizeof(DFloat);
                   2221: 
1.47      anton    2222: sfaligned      ( c_addr -- sf_addr )   float-ext       s_f_aligned
1.52      anton    2223: ""@i{sf-addr} is the first single-float-aligned address greater
1.29      crook    2224: than or equal to @i{c-addr}.""
1.1       anton    2225: sf_addr = (SFloat *)((((Cell)c_addr)+(sizeof(SFloat)-1))&(-sizeof(SFloat)));
                   2226: :
                   2227:  [ 1 sfloats 1- ] Literal + [ -1 sfloats ] Literal and ;
                   2228: 
1.47      anton    2229: dfaligned      ( c_addr -- df_addr )   float-ext       d_f_aligned
1.52      anton    2230: ""@i{df-addr} is the first double-float-aligned address greater
1.29      crook    2231: than or equal to @i{c-addr}.""
1.1       anton    2232: df_addr = (DFloat *)((((Cell)c_addr)+(sizeof(DFloat)-1))&(-sizeof(DFloat)));
                   2233: :
                   2234:  [ 1 dfloats 1- ] Literal + [ -1 dfloats ] Literal and ;
                   2235: 
1.112     pazsan   2236: v*     ( f_addr1 nstride1 f_addr2 nstride2 ucount -- r ) gforth v_star
                   2237: ""dot-product: r=v1*v2.  The first element of v1 is at f_addr1, the
                   2238: next at f_addr1+nstride1 and so on (similar for v2). Both vectors have
                   2239: ucount elements.""
1.125     anton    2240: r = v_star(f_addr1, nstride1, f_addr2, nstride2, ucount);
1.112     pazsan   2241: :
                   2242:  >r swap 2swap swap 0e r> 0 ?DO
                   2243:      dup f@ over + 2swap dup f@ f* f+ over + 2swap
                   2244:  LOOP 2drop 2drop ; 
                   2245: 
                   2246: faxpy  ( ra f_x nstridex f_y nstridey ucount -- )      gforth
                   2247: ""vy=ra*vx+vy""
1.125     anton    2248: faxpy(ra, f_x, nstridex, f_y, nstridey, ucount);
1.112     pazsan   2249: :
                   2250:  >r swap 2swap swap r> 0 ?DO
                   2251:      fdup dup f@ f* over + 2swap dup f@ f+ dup f! over + 2swap
                   2252:  LOOP 2drop 2drop fdrop ;
                   2253: 
                   2254: \+
                   2255: 
1.1       anton    2256: \ The following words access machine/OS/installation-dependent
                   2257: \   Gforth internals
                   2258: \ !! how about environmental queries DIRECT-THREADED,
                   2259: \   INDIRECT-THREADED, TOS-CACHED, FTOS-CACHED, CODEFIELD-DOES */
                   2260: 
                   2261: \ local variable implementation primitives
1.112     pazsan   2262: 
1.15      pazsan   2263: \+glocals
1.1       anton    2264: 
1.110     pazsan   2265: \g locals
                   2266: 
1.68      anton    2267: @local#        ( #noffset -- w )       gforth  fetch_local_number
                   2268: w = *(Cell *)(lp+noffset);
1.1       anton    2269: 
1.47      anton    2270: @local0        ( -- w )        new     fetch_local_zero
1.112     pazsan   2271: w = ((Cell *)lp)[0];
1.1       anton    2272: 
1.47      anton    2273: @local1        ( -- w )        new     fetch_local_four
1.112     pazsan   2274: w = ((Cell *)lp)[1];
1.1       anton    2275: 
1.47      anton    2276: @local2        ( -- w )        new     fetch_local_eight
1.112     pazsan   2277: w = ((Cell *)lp)[2];
1.1       anton    2278: 
1.47      anton    2279: @local3        ( -- w )        new     fetch_local_twelve
1.112     pazsan   2280: w = ((Cell *)lp)[3];
1.1       anton    2281: 
1.15      pazsan   2282: \+floating
1.1       anton    2283: 
1.68      anton    2284: f@local#       ( #noffset -- r )       gforth  f_fetch_local_number
                   2285: r = *(Float *)(lp+noffset);
1.1       anton    2286: 
1.47      anton    2287: f@local0       ( -- r )        new     f_fetch_local_zero
1.112     pazsan   2288: r = ((Float *)lp)[0];
1.1       anton    2289: 
1.47      anton    2290: f@local1       ( -- r )        new     f_fetch_local_eight
1.112     pazsan   2291: r = ((Float *)lp)[1];
1.1       anton    2292: 
1.15      pazsan   2293: \+
1.1       anton    2294: 
1.68      anton    2295: laddr# ( #noffset -- c_addr )  gforth  laddr_number
1.1       anton    2296: /* this can also be used to implement lp@ */
1.68      anton    2297: c_addr = (Char *)(lp+noffset);
1.1       anton    2298: 
1.68      anton    2299: lp+!#  ( #noffset -- ) gforth  lp_plus_store_number
1.1       anton    2300: ""used with negative immediate values it allocates memory on the
                   2301: local stack, a positive immediate argument drops memory from the local
                   2302: stack""
1.68      anton    2303: lp += noffset;
1.1       anton    2304: 
1.47      anton    2305: lp-    ( -- )  new     minus_four_lp_plus_store
1.1       anton    2306: lp += -sizeof(Cell);
                   2307: 
1.47      anton    2308: lp+    ( -- )  new     eight_lp_plus_store
1.1       anton    2309: lp += sizeof(Float);
                   2310: 
1.47      anton    2311: lp+2   ( -- )  new     sixteen_lp_plus_store
1.1       anton    2312: lp += 2*sizeof(Float);
                   2313: 
1.47      anton    2314: lp!    ( c_addr -- )   gforth  lp_store
1.1       anton    2315: lp = (Address)c_addr;
                   2316: 
1.47      anton    2317: >l     ( w -- )        gforth  to_l
1.1       anton    2318: lp -= sizeof(Cell);
                   2319: *(Cell *)lp = w;
                   2320: 
1.15      pazsan   2321: \+floating
1.1       anton    2322: 
1.47      anton    2323: f>l    ( r -- )        gforth  f_to_l
1.1       anton    2324: lp -= sizeof(Float);
                   2325: *(Float *)lp = r;
                   2326: 
1.47      anton    2327: fpick  ( u -- r )              gforth
1.52      anton    2328: ""Actually the stack effect is @code{ r0 ... ru u -- r0 ... ru r0 }.""
1.11      anton    2329: r = fp[u+1]; /* +1, because update of fp happens before this fragment */
                   2330: :
                   2331:  floats fp@ + f@ ;
                   2332: 
1.15      pazsan   2333: \+
                   2334: \+
1.1       anton    2335: 
1.15      pazsan   2336: \+OS
1.1       anton    2337: 
1.110     pazsan   2338: \g syslib
                   2339: 
1.131     pazsan   2340: open-lib       ( c_addr1 u1 -- u2 )    gforth  open_lib
                   2341: #if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN)
                   2342: #ifndef RTLD_GLOBAL
                   2343: #define RTLD_GLOBAL 0
                   2344: #endif
                   2345: u2=(UCell) dlopen(cstr(c_addr1, u1, 1), RTLD_GLOBAL | RTLD_LAZY);
                   2346: #else
                   2347: #  ifdef _WIN32
                   2348: u2 = (Cell) GetModuleHandle(cstr(c_addr1, u1, 1));
                   2349: #  else
                   2350: #warning Define open-lib!
                   2351: u2 = 0;
                   2352: #  endif
                   2353: #endif
                   2354: 
                   2355: lib-sym        ( c_addr1 u1 u2 -- u3 ) gforth  lib_sym
                   2356: #if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN)
                   2357: u3 = (UCell) dlsym((void*)u2,cstr(c_addr1, u1, 1));
                   2358: #else
                   2359: #  ifdef _WIN32
                   2360: u3 = (Cell) GetProcAddress((HMODULE)u2, cstr(c_addr1, u1, 1));
                   2361: #  else
                   2362: #warning Define lib-sym!
                   2363: u3 = 0;
                   2364: #  endif
                   2365: #endif
                   2366: 
1.142     pazsan   2367: wcall  ( u -- )        gforth
                   2368: IF_fpTOS(fp[0]=fpTOS);
                   2369: FP=fp;
                   2370: sp=(Cell*)(SYSCALL(Cell*(*)(Cell *, void *))u)(sp, &FP);
                   2371: fp=FP;
                   2372: IF_spTOS(spTOS=sp[0];)
                   2373: IF_fpTOS(fpTOS=fp[0]);
                   2374: 
1.131     pazsan   2375: \+FFCALL
                   2376: 
1.136     pazsan   2377: av-start-void  ( c_addr -- )   gforth  av_start_void
1.131     pazsan   2378: av_start_void(alist, c_addr);
                   2379: 
1.136     pazsan   2380: av-start-int   ( c_addr -- )   gforth  av_start_int
1.131     pazsan   2381: av_start_int(alist, c_addr, &irv);
                   2382: 
1.136     pazsan   2383: av-start-float ( c_addr -- )   gforth  av_start_float
1.131     pazsan   2384: av_start_float(alist, c_addr, &frv);
                   2385: 
1.136     pazsan   2386: av-start-double        ( c_addr -- )   gforth  av_start_double
1.131     pazsan   2387: av_start_double(alist, c_addr, &drv);
                   2388: 
1.136     pazsan   2389: av-start-longlong      ( c_addr -- )   gforth  av_start_longlong
1.131     pazsan   2390: av_start_longlong(alist, c_addr, &llrv);
                   2391: 
1.136     pazsan   2392: av-start-ptr   ( c_addr -- )   gforth  av_start_ptr
1.131     pazsan   2393: av_start_ptr(alist, c_addr, void*, &prv);
                   2394: 
                   2395: av-int  ( w -- )  gforth  av_int
                   2396: av_int(alist, w);
                   2397: 
1.136     pazsan   2398: av-float       ( r -- )        gforth  av_float
1.131     pazsan   2399: av_float(alist, r);
                   2400: 
1.136     pazsan   2401: av-double      ( r -- )        gforth  av_double
1.131     pazsan   2402: av_double(alist, r);
                   2403: 
1.136     pazsan   2404: av-longlong    ( d -- )        gforth  av_longlong
1.158     pazsan   2405: #ifdef BUGGY_LL_SIZE
                   2406: av_longlong(alist, DLO(d));
1.151     pazsan   2407: #else
1.131     pazsan   2408: av_longlong(alist, d);
1.151     pazsan   2409: #endif
1.131     pazsan   2410: 
1.136     pazsan   2411: av-ptr ( c_addr -- )   gforth  av_ptr
1.131     pazsan   2412: av_ptr(alist, void*, c_addr);
                   2413: 
1.136     pazsan   2414: av-int-r  ( R:w -- )  gforth  av_int_r
                   2415: av_int(alist, w);
                   2416: 
                   2417: av-float-r     ( -- )  gforth  av_float_r
                   2418: float r = *(Float*)lp;
                   2419: lp += sizeof(Float);
                   2420: av_float(alist, r);
                   2421: 
                   2422: av-double-r    ( -- )  gforth  av_double_r
                   2423: double r = *(Float*)lp;
                   2424: lp += sizeof(Float);
                   2425: av_double(alist, r);
                   2426: 
                   2427: av-longlong-r  ( R:d -- )      gforth  av_longlong_r
1.158     pazsan   2428: #ifdef BUGGY_LL_SIZE
                   2429: av_longlong(alist, DLO(d));
1.151     pazsan   2430: #else
1.136     pazsan   2431: av_longlong(alist, d);
1.151     pazsan   2432: #endif
1.136     pazsan   2433: 
                   2434: av-ptr-r       ( R:c_addr -- ) gforth  av_ptr_r
                   2435: av_ptr(alist, void*, c_addr);
                   2436: 
                   2437: av-call-void   ( -- )  gforth  av_call_void
1.131     pazsan   2438: SAVE_REGS
                   2439: av_call(alist);
                   2440: REST_REGS
                   2441: 
1.136     pazsan   2442: av-call-int    ( -- w )        gforth  av_call_int
1.131     pazsan   2443: SAVE_REGS
                   2444: av_call(alist);
1.134     pazsan   2445: REST_REGS
1.131     pazsan   2446: w = irv;
                   2447: 
1.136     pazsan   2448: av-call-float  ( -- r )        gforth  av_call_float
1.131     pazsan   2449: SAVE_REGS
                   2450: av_call(alist);
                   2451: REST_REGS
                   2452: r = frv;
                   2453: 
1.136     pazsan   2454: av-call-double ( -- r )        gforth  av_call_double
1.131     pazsan   2455: SAVE_REGS
                   2456: av_call(alist);
                   2457: REST_REGS
                   2458: r = drv;
                   2459: 
1.136     pazsan   2460: av-call-longlong       ( -- d )        gforth  av_call_longlong
1.131     pazsan   2461: SAVE_REGS
                   2462: av_call(alist);
                   2463: REST_REGS
1.151     pazsan   2464: #ifdef BUGGY_LONG_LONG
1.158     pazsan   2465: DLO_IS(d, llrv);
                   2466: DHI_IS(d, 0);
1.152     pazsan   2467: #else
                   2468: d = llrv;
1.151     pazsan   2469: #endif
1.131     pazsan   2470: 
1.136     pazsan   2471: av-call-ptr    ( -- c_addr )   gforth  av_call_ptr
1.131     pazsan   2472: SAVE_REGS
                   2473: av_call(alist);
                   2474: REST_REGS
                   2475: c_addr = prv;
                   2476: 
1.135     pazsan   2477: alloc-callback ( a_ip -- c_addr )      gforth  alloc_callback
                   2478: c_addr = (char *)alloc_callback(engine_callback, (Xt *)a_ip);
1.131     pazsan   2479: 
1.135     pazsan   2480: va-start-void  ( -- )  gforth  va_start_void
                   2481: va_start_void(clist);
1.131     pazsan   2482: 
1.135     pazsan   2483: va-start-int   ( -- )  gforth  va_start_int
                   2484: va_start_int(clist);
1.131     pazsan   2485: 
1.135     pazsan   2486: va-start-longlong      ( -- )  gforth  va_start_longlong
                   2487: va_start_longlong(clist);
1.131     pazsan   2488: 
1.135     pazsan   2489: va-start-ptr   ( -- )  gforth  va_start_ptr
                   2490: va_start_ptr(clist, (char *));
1.131     pazsan   2491: 
1.135     pazsan   2492: va-start-float ( -- )  gforth  va_start_float
                   2493: va_start_float(clist);
                   2494: 
                   2495: va-start-double        ( -- )  gforth  va_start_double
                   2496: va_start_double(clist);
                   2497: 
                   2498: va-arg-int     ( -- w )        gforth  va_arg_int
                   2499: w = va_arg_int(clist);
                   2500: 
                   2501: va-arg-longlong        ( -- d )        gforth  va_arg_longlong
1.151     pazsan   2502: #ifdef BUGGY_LONG_LONG
1.158     pazsan   2503: DLO_IS(d, va_arg_longlong(clist));
                   2504: DHI_IS(d, 0);
1.151     pazsan   2505: #else
1.135     pazsan   2506: d = va_arg_longlong(clist);
1.151     pazsan   2507: #endif
1.135     pazsan   2508: 
                   2509: va-arg-ptr     ( -- c_addr )   gforth  va_arg_ptr
                   2510: c_addr = (char *)va_arg_ptr(clist,char*);
                   2511: 
                   2512: va-arg-float   ( -- r )        gforth  va_arg_float
                   2513: r = va_arg_float(clist);
                   2514: 
                   2515: va-arg-double  ( -- r )        gforth  va_arg_double
                   2516: r = va_arg_double(clist);
1.131     pazsan   2517: 
                   2518: va-return-void ( -- )  gforth va_return_void
                   2519: va_return_void(clist);
                   2520: return 0;
                   2521: 
                   2522: va-return-int ( w -- ) gforth va_return_int
                   2523: va_return_int(clist, w);
                   2524: return 0;
                   2525: 
                   2526: va-return-ptr ( c_addr -- )    gforth va_return_ptr
                   2527: va_return_ptr(clist, void *, c_addr);
                   2528: return 0;
                   2529: 
                   2530: va-return-longlong ( d -- )    gforth va_return_longlong
1.151     pazsan   2531: #ifdef BUGGY_LONG_LONG
                   2532: va_return_longlong(clist, d.lo);
                   2533: #else
1.131     pazsan   2534: va_return_longlong(clist, d);
1.151     pazsan   2535: #endif
1.131     pazsan   2536: return 0;
                   2537: 
                   2538: va-return-float ( r -- )       gforth va_return_float
                   2539: va_return_float(clist, r);
                   2540: return 0;
                   2541: 
                   2542: va-return-double ( r -- )      gforth va_return_double
                   2543: va_return_double(clist, r);
                   2544: return 0;
                   2545: 
1.142     pazsan   2546: \+
                   2547: 
                   2548: \+OLDCALL
1.131     pazsan   2549: 
1.1       anton    2550: define(`uploop',
                   2551:        `pushdef(`$1', `$2')_uploop(`$1', `$2', `$3', `$4', `$5')`'popdef(`$1')')
                   2552: define(`_uploop',
                   2553:        `ifelse($1, `$3', `$5',
                   2554:               `$4`'define(`$1', incr($1))_uploop(`$1', `$2', `$3', `$4', `$5')')')
                   2555: \ argflist(argnum): Forth argument list
                   2556: define(argflist,
                   2557:        `ifelse($1, 0, `',
                   2558:                `uploop(`_i', 1, $1, `format(`u%d ', _i)', `format(`u%d ', _i)')')')
                   2559: \ argdlist(argnum): declare C's arguments
                   2560: define(argdlist,
                   2561:        `ifelse($1, 0, `',
                   2562:                `uploop(`_i', 1, $1, `Cell, ', `Cell')')')
                   2563: \ argclist(argnum): pass C's arguments
                   2564: define(argclist,
                   2565:        `ifelse($1, 0, `',
                   2566:                `uploop(`_i', 1, $1, `format(`u%d, ', _i)', `format(`u%d', _i)')')')
                   2567: \ icall(argnum)
                   2568: define(icall,
1.47      anton    2569: `icall$1       ( argflist($1)u -- uret )       gforth
1.9       pazsan   2570: uret = (SYSCALL(Cell(*)(argdlist($1)))u)(argclist($1));
1.1       anton    2571: 
                   2572: ')
                   2573: define(fcall,
1.47      anton    2574: `fcall$1       ( argflist($1)u -- rret )       gforth
1.9       pazsan   2575: rret = (SYSCALL(Float(*)(argdlist($1)))u)(argclist($1));
1.1       anton    2576: 
                   2577: ')
                   2578: 
1.46      pazsan   2579: \ close ' to keep fontify happy
1.1       anton    2580: 
                   2581: uploop(i, 0, 7, `icall(i)')
                   2582: icall(20)
                   2583: uploop(i, 0, 7, `fcall(i)')
                   2584: fcall(20)
                   2585: 
1.15      pazsan   2586: \+
1.131     pazsan   2587: \+
1.1       anton    2588: 
1.142     pazsan   2589: \g peephole
1.46      pazsan   2590: 
1.112     pazsan   2591: \+peephole
                   2592: 
1.119     anton    2593: compile-prim1 ( a_prim -- ) gforth compile_prim1
                   2594: ""compile prim (incl. immargs) at @var{a_prim}""
                   2595: compile_prim1(a_prim);
                   2596: 
                   2597: finish-code ( -- ) gforth finish_code
                   2598: ""Perform delayed steps in code generation (branch resolution, I-cache
                   2599: flushing).""
1.149     anton    2600: IF_spTOS(sp[0]=spTOS); /* workaround for failing to save spTOS
                   2601:                          (gcc-2.95.1, gforth-fast --enable-force-reg) */
1.119     anton    2602: finish_code();
1.149     anton    2603: IF_spTOS(spTOS=sp[0]);
1.119     anton    2604: 
                   2605: forget-dyncode ( c_code -- f ) gforth-internal forget_dyncode
                   2606: f = forget_dyncode(c_code);
                   2607: 
                   2608: decompile-prim ( a_code -- a_prim ) gforth-internal decompile_prim
                   2609: ""a_prim is the code address of the primitive that has been
                   2610: compile_prim1ed to a_code""
1.121     anton    2611: a_prim = (Cell *)decompile_code((Label)a_code);
1.119     anton    2612: 
1.112     pazsan   2613: \ set-next-code and call2 do not appear in images and can be
                   2614: \ renumbered arbitrarily
1.46      pazsan   2615: 
1.112     pazsan   2616: set-next-code ( #w -- ) gforth set_next_code
                   2617: #ifdef NO_IP
                   2618: next_code = (Label)w;
                   2619: #endif
1.34      jwilke   2620: 
1.112     pazsan   2621: call2 ( #a_callee #a_ret_addr -- R:a_ret_addr ) gforth
                   2622: /* call with explicit return address */
                   2623: #ifdef NO_IP
                   2624: INST_TAIL;
                   2625: JUMP(a_callee);
1.45      anton    2626: #else
1.112     pazsan   2627: assert(0);
1.45      anton    2628: #endif
1.131     pazsan   2629: 
                   2630: tag-offsets ( -- a_addr ) gforth tag_offsets
                   2631: extern Cell groups[32];
                   2632: a_addr = groups;
1.51      anton    2633: 
1.54      pazsan   2634: \+
1.128     anton    2635: 
                   2636: \g static_super
                   2637: 
1.147     anton    2638: ifdef(`M4_ENGINE_FAST',
                   2639: `include(peeprules.vmg)')
1.54      pazsan   2640: 
1.112     pazsan   2641: \g end

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