Annotation of gforth/prim, revision 1.147

1.1       anton       1: \ Gforth primitives
                      2: 
1.126     anton       3: \ Copyright (C) 1995,1996,1997,1998,2000,2003 Free Software Foundation, Inc.
1.1       anton       4: 
                      5: \ This file is part of Gforth.
                      6: 
                      7: \ Gforth is free software; you can redistribute it and/or
                      8: \ modify it under the terms of the GNU General Public License
                      9: \ as published by the Free Software Foundation; either version 2
                     10: \ of the License, or (at your option) any later version.
                     11: 
                     12: \ This program is distributed in the hope that it will be useful,
                     13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
                     14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     15: \ GNU General Public License for more details.
                     16: 
                     17: \ You should have received a copy of the GNU General Public License
                     18: \ along with this program; if not, write to the Free Software
1.63      anton      19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.1       anton      20: 
                     21: 
                     22: \ WARNING: This file is processed by m4. Make sure your identifiers
                     23: \ don't collide with m4's (e.g. by undefining them).
                     24: \ 
                     25: \ 
                     26: \ 
                     27: \ This file contains primitive specifications in the following format:
                     28: \ 
1.47      anton      29: \ forth name   ( stack effect )        category        [pronunciation]
1.1       anton      30: \ [""glossary entry""]
                     31: \ C code
                     32: \ [:
                     33: \ Forth code]
                     34: \ 
1.47      anton      35: \ Note: Fields in brackets are optional.  Word specifications have to
                     36: \ be separated by at least one empty line
1.1       anton      37: \
                     38: \ Both pronounciation and stack items (in the stack effect) must
1.48      anton      39: \ conform to the C identifier syntax or the C compiler will complain.
                     40: \ If you don't have a pronounciation field, the Forth name is used,
                     41: \ and has to conform to the C identifier syntax.
1.1       anton      42: \ 
                     43: \ These specifications are automatically translated into C-code for the
                     44: \ interpreter and into some other files. I hope that your C compiler has
                     45: \ decent optimization, otherwise the automatically generated code will
                     46: \ be somewhat slow. The Forth version of the code is included for manual
                     47: \ compilers, so they will need to compile only the important words.
                     48: \ 
                     49: \ Note that stack pointer adjustment is performed according to stack
                     50: \ effect by automatically generated code and NEXT is automatically
                     51: \ appended to the C code. Also, you can use the names in the stack
                     52: \ effect in the C code. Stack access is automatic. One exception: if
                     53: \ your code does not fall through, the results are not stored into the
                     54: \ stack. Use different names on both sides of the '--', if you change a
                     55: \ value (some stores to the stack are optimized away).
1.93      anton      56: \
                     57: \ For superinstructions the syntax is:
                     58: \
                     59: \ forth-name [/ c-name] = forth-name forth-name ...
                     60: \
1.1       anton      61: \ 
                     62: \ The stack variables have the following types:
                     63: \ 
                     64: \ name matches type
                     65: \ f.*          Bool
                     66: \ c.*          Char
1.93      anton      67: \ [nw].*       Cell
1.1       anton      68: \ u.*          UCell
                     69: \ d.*          DCell
                     70: \ ud.*         UDCell
                     71: \ r.*          Float
                     72: \ a_.*         Cell *
                     73: \ c_.*         Char *
                     74: \ f_.*         Float *
                     75: \ df_.*                DFloat *
                     76: \ sf_.*                SFloat *
                     77: \ xt.*         XT
                     78: \ f83name.*    F83Name *
1.67      anton      79: 
1.79      anton      80: \E stack data-stack   sp Cell
                     81: \E stack fp-stack     fp Float
                     82: \E stack return-stack rp Cell
                     83: \E
1.67      anton      84: \E get-current prefixes set-current
                     85: \E 
                     86: \E s" Bool"            single data-stack type-prefix f
                     87: \E s" Char"            single data-stack type-prefix c
                     88: \E s" Cell"            single data-stack type-prefix n
                     89: \E s" Cell"            single data-stack type-prefix w
                     90: \E s" UCell"           single data-stack type-prefix u
                     91: \E s" DCell"           double data-stack type-prefix d
                     92: \E s" UDCell"          double data-stack type-prefix ud
                     93: \E s" Float"           single fp-stack   type-prefix r
                     94: \E s" Cell *"          single data-stack type-prefix a_
                     95: \E s" Char *"          single data-stack type-prefix c_
                     96: \E s" Float *"         single data-stack type-prefix f_
                     97: \E s" DFloat *"                single data-stack type-prefix df_
                     98: \E s" SFloat *"                single data-stack type-prefix sf_
                     99: \E s" Xt"              single data-stack type-prefix xt
                    100: \E s" struct F83Name *"        single data-stack type-prefix f83name
1.71      anton     101: \E s" struct Longname *" single data-stack type-prefix longname
1.67      anton     102: \E 
                    103: \E return-stack stack-prefix R:
                    104: \E inst-stream  stack-prefix #
                    105: \E 
                    106: \E set-current
1.97      anton     107: \E store-optimization on
1.109     anton     108: \E ' noop tail-nextp2 ! \ now INST_TAIL just stores, but does not jump
1.128     anton     109: \E
                    110: \E include-skipped-insts on \ static superinsts include cells for components
                    111: \E                          \ useful for dynamic programming and
                    112: \E                          \ superinsts across entry points
1.67      anton     113: 
1.1       anton     114: \ 
                    115: \ 
                    116: \ 
                    117: \ In addition the following names can be used:
                    118: \ ip   the instruction pointer
                    119: \ sp   the data stack pointer
                    120: \ rp   the parameter stack pointer
                    121: \ lp   the locals stack pointer
                    122: \ NEXT executes NEXT
                    123: \ cfa  
                    124: \ NEXT1        executes NEXT1
                    125: \ FLAG(x)      makes a Forth flag from a C flag
                    126: \ 
                    127: \ 
                    128: \ 
                    129: \ Percentages in comments are from Koopmans book: average/maximum use
                    130: \ (taken from four, not very representative benchmarks)
                    131: \ 
                    132: \ 
                    133: \ 
                    134: \ To do:
                    135: \ 
                    136: \ throw execute, cfa and NEXT1 out?
                    137: \ macroize *ip, ip++, *ip++ (pipelining)?
                    138: 
1.145     anton     139: \ Stack caching setup
                    140: 
1.147   ! anton     141: ifdef(`M4_ENGINE_FAST', `include(cache1.vmg)', `include(cache0.vmg)')
1.145     anton     142: 
1.1       anton     143: \ these m4 macros would collide with identifiers
                    144: undefine(`index')
                    145: undefine(`shift')
1.78      pazsan    146: undefine(`symbols')
1.1       anton     147: 
1.140     anton     148: \F 0 [if]
                    149: 
1.139     anton     150: \ run-time routines for non-primitives.  They are defined as
                    151: \ primitives, because that simplifies things.
                    152: 
                    153: (docol)        ( -- R:a_retaddr )      gforth-internal paren_docol
                    154: ""run-time routine for colon definitions""
1.141     anton     155: a_retaddr = (Cell *)IP;
1.139     anton     156: SET_IP((Xt *)PFA(CFA));
                    157: 
                    158: (docon) ( -- w )       gforth-internal paren_docon
                    159: ""run-time routine for constants""
                    160: w = *(Cell *)PFA(CFA);
                    161: 
                    162: (dovar) ( -- a_body )  gforth-internal paren_dovar
                    163: ""run-time routine for variables and CREATEd words""
                    164: a_body = PFA(CFA);
                    165: 
                    166: (douser) ( -- a_user ) gforth-internal paren_douser
                    167: ""run-time routine for constants""
                    168: a_user = (Cell *)(up+*(Cell *)PFA(CFA));
                    169: 
                    170: (dodefer) ( -- )       gforth-internal paren_dodefer
                    171: ""run-time routine for deferred words""
1.141     anton     172: ip=IP; /* undo any ip updating that may have been performed by NEXT_P0 */
                    173: SUPER_END; /* !! probably unnecessary and may lead to measurement errors */
1.139     anton     174: EXEC(*(Xt *)PFA(CFA));
                    175: 
                    176: (dofield) ( n1 -- n2 ) gforth-internal paren_field
                    177: ""run-time routine for fields""
                    178: n2 = n1 + *(Cell *)PFA(CFA);
                    179: 
                    180: (dodoes) ( -- a_body R:a_retaddr )     gforth-internal paren_dodoes
                    181: ""run-time routine for @code{does>}-defined words""
1.141     anton     182: a_retaddr = (Cell *)IP;
1.139     anton     183: a_body = PFA(CFA);
                    184: SET_IP(DOES_CODE1(CFA));
                    185: 
                    186: (does-handler) ( -- )  gforth-internal paren_does_handler
                    187: ""just a slot to have an encoding for the DOESJUMP, 
                    188: which is no longer used anyway (!! eliminate this)""
1.140     anton     189: 
                    190: \F [endif]
1.139     anton     191: 
1.83      pazsan    192: \g control
                    193: 
1.47      anton     194: noop   ( -- )          gforth
1.1       anton     195: :
                    196:  ;
                    197: 
1.112     pazsan    198: call   ( #a_callee -- R:a_retaddr )    new
                    199: ""Call callee (a variant of docol with inline argument).""
                    200: #ifdef NO_IP
                    201: INST_TAIL;
                    202: JUMP(a_callee);
                    203: #else
                    204: #ifdef DEBUG
                    205:     {
                    206:       CFA_TO_NAME((((Cell *)a_callee)-2));
                    207:       fprintf(stderr,"%08lx: call %08lx %.*s\n",(Cell)ip,(Cell)a_callee,
                    208:              len,name);
                    209:     }
                    210: #endif
                    211: a_retaddr = (Cell *)IP;
                    212: SET_IP((Xt *)a_callee);
                    213: #endif
1.1       anton     214: 
1.47      anton     215: execute        ( xt -- )               core
1.29      crook     216: ""Perform the semantics represented by the execution token, @i{xt}.""
1.102     anton     217: #ifndef NO_IP
1.1       anton     218: ip=IP;
1.102     anton     219: #endif
1.64      anton     220: IF_spTOS(spTOS = sp[0]);
1.76      anton     221: SUPER_END;
1.1       anton     222: EXEC(xt);
                    223: 
1.47      anton     224: perform        ( a_addr -- )   gforth
1.55      anton     225: ""@code{@@ execute}.""
1.1       anton     226: /* and pfe */
1.102     anton     227: #ifndef NO_IP
1.1       anton     228: ip=IP;
1.102     anton     229: #endif
1.64      anton     230: IF_spTOS(spTOS = sp[0]);
1.76      anton     231: SUPER_END;
1.1       anton     232: EXEC(*(Xt *)a_addr);
                    233: :
                    234:  @ execute ;
                    235: 
1.112     pazsan    236: ;s     ( R:w -- )              gforth  semis
                    237: ""The primitive compiled by @code{EXIT}.""
                    238: #ifdef NO_IP
                    239: INST_TAIL;
                    240: goto *(void *)w;
                    241: #else
                    242: SET_IP((Xt *)w);
                    243: #endif
                    244: 
                    245: unloop ( R:w1 R:w2 -- )        core
                    246: /* !! alias for 2rdrop */
                    247: :
                    248:  r> rdrop rdrop >r ;
                    249: 
                    250: lit-perform    ( #a_addr -- )  new     lit_perform
                    251: #ifndef NO_IP
                    252: ip=IP;
                    253: #endif
                    254: SUPER_END;
                    255: EXEC(*(Xt *)a_addr);
                    256: 
                    257: does-exec ( #a_cfa -- R:nest a_pfa )   new     does_exec
                    258: #ifdef NO_IP
                    259: /* compiled to LIT CALL by compile_prim */
                    260: assert(0);
                    261: #else
                    262: a_pfa = PFA(a_cfa);
                    263: nest = (Cell)IP;
                    264: IF_spTOS(spTOS = sp[0]);
                    265: #ifdef DEBUG
                    266:     {
                    267:       CFA_TO_NAME(a_cfa);
                    268:       fprintf(stderr,"%08lx: does %08lx %.*s\n",
                    269:              (Cell)ip,(Cell)a_cfa,len,name);
                    270:     }
                    271: #endif
                    272: SET_IP(DOES_CODE1(a_cfa));
                    273: #endif
                    274: 
1.15      pazsan    275: \+glocals
1.1       anton     276: 
1.112     pazsan    277: branch-lp+!# ( #a_target #nlocals -- ) gforth  branch_lp_plus_store_number
1.1       anton     278: /* this will probably not be used */
1.68      anton     279: lp += nlocals;
1.112     pazsan    280: #ifdef NO_IP
                    281: INST_TAIL;
                    282: JUMP(a_target);
                    283: #else
                    284: SET_IP((Xt *)a_target);
                    285: #endif
1.1       anton     286: 
1.15      pazsan    287: \+
1.1       anton     288: 
1.112     pazsan    289: branch ( #a_target -- )        gforth
                    290: #ifdef NO_IP
                    291: INST_TAIL;
                    292: JUMP(a_target);
                    293: #else
                    294: SET_IP((Xt *)a_target);
                    295: #endif
1.1       anton     296: :
1.112     pazsan    297:  r> @ >r ;
1.1       anton     298: 
1.112     pazsan    299: \ condbranch(forthname,stackeffect,restline,code1,code2,forthcode)
1.1       anton     300: \ this is non-syntactical: code must open a brace that is closed by the macro
                    301: define(condbranch,
1.112     pazsan    302: $1 ( `#'a_target $2 ) $3
                    303: $4     #ifdef NO_IP
1.96      anton     304: INST_TAIL;
1.112     pazsan    305: #endif
                    306: $5     #ifdef NO_IP
                    307: JUMP(a_target);
                    308: #else
                    309: SET_IP((Xt *)a_target);
                    310: INST_TAIL; NEXT_P2;
                    311: #endif
1.1       anton     312: }
1.87      anton     313: SUPER_CONTINUE;
1.112     pazsan    314: $6
1.1       anton     315: 
1.15      pazsan    316: \+glocals
1.1       anton     317: 
1.112     pazsan    318: $1-lp+!`#' ( `#'a_target `#'nlocals $2 ) $3_lp_plus_store_number
                    319: $4     #ifdef NO_IP
1.96      anton     320: INST_TAIL;
1.112     pazsan    321: #endif
                    322: $5     lp += nlocals;
                    323: #ifdef NO_IP
                    324: JUMP(a_target);
                    325: #else
                    326: SET_IP((Xt *)a_target);
                    327: INST_TAIL; NEXT_P2;
                    328: #endif
1.1       anton     329: }
1.87      anton     330: SUPER_CONTINUE;
1.1       anton     331: 
1.15      pazsan    332: \+
1.1       anton     333: )
                    334: 
1.68      anton     335: condbranch(?branch,f --,f83    question_branch,
1.112     pazsan    336: ,if (f==0) {
1.5       jwilke    337: ,:
1.112     pazsan    338:  0= dup 0=          \ !f f
                    339:  r> tuck cell+      \ !f branchoffset f IP+
                    340:  and -rot @ and or  \ f&IP+|!f&branch
1.5       jwilke    341:  >r ;)
1.1       anton     342: 
                    343: \ we don't need an lp_plus_store version of the ?dup-stuff, because it
                    344: \ is only used in if's (yet)
                    345: 
1.15      pazsan    346: \+xconds
1.1       anton     347: 
1.112     pazsan    348: ?dup-?branch   ( #a_target f -- f )    new     question_dupe_question_branch
1.1       anton     349: ""The run-time procedure compiled by @code{?DUP-IF}.""
                    350: if (f==0) {
                    351:   sp++;
1.64      anton     352:   IF_spTOS(spTOS = sp[0]);
1.112     pazsan    353: #ifdef NO_IP
                    354: INST_TAIL;
                    355: JUMP(a_target);
                    356: #else
                    357: SET_IP((Xt *)a_target);
                    358:   INST_TAIL; NEXT_P2;
                    359: #endif
1.1       anton     360: }
1.87      anton     361: SUPER_CONTINUE;
1.1       anton     362: 
1.112     pazsan    363: ?dup-0=-?branch ( #a_target f -- ) new question_dupe_zero_equals_question_branch
1.1       anton     364: ""The run-time procedure compiled by @code{?DUP-0=-IF}.""
                    365: /* the approach taken here of declaring the word as having the stack
                    366: effect ( f -- ) and correcting for it in the branch-taken case costs a
                    367: few cycles in that case, but is easy to convert to a CONDBRANCH
                    368: invocation */
                    369: if (f!=0) {
                    370:   sp--;
1.112     pazsan    371: #ifdef NO_IP
                    372:   JUMP(a_target);
                    373: #else
                    374:   SET_IP((Xt *)a_target);
1.1       anton     375:   NEXT;
1.112     pazsan    376: #endif
1.1       anton     377: }
1.87      anton     378: SUPER_CONTINUE;
1.1       anton     379: 
1.15      pazsan    380: \+
1.31      jwilke    381: \fhas? skiploopprims 0= [IF]
1.1       anton     382: 
1.68      anton     383: condbranch((next),R:n1 -- R:n2,cmFORTH paren_next,
1.65      anton     384: n2=n1-1;
1.112     pazsan    385: ,if (n1) {
1.1       anton     386: ,:
                    387:  r> r> dup 1- >r
1.112     pazsan    388:  IF @ >r ELSE cell+ >r THEN ;)
1.1       anton     389: 
1.68      anton     390: condbranch((loop),R:nlimit R:n1 -- R:nlimit R:n2,gforth        paren_loop,
1.65      anton     391: n2=n1+1;
1.112     pazsan    392: ,if (n2 != nlimit) {
1.1       anton     393: ,:
                    394:  r> r> 1+ r> 2dup =
                    395:  IF >r 1- >r cell+ >r
1.112     pazsan    396:  ELSE >r >r @ >r THEN ;)
1.1       anton     397: 
1.68      anton     398: condbranch((+loop),n R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_plus_loop,
1.1       anton     399: /* !! check this thoroughly */
                    400: /* sign bit manipulation and test: (x^y)<0 is equivalent to (x<0) != (y<0) */
                    401: /* dependent upon two's complement arithmetic */
1.65      anton     402: Cell olddiff = n1-nlimit;
                    403: n2=n1+n;       
1.112     pazsan    404: ,if ((olddiff^(olddiff+n))>=0   /* the limit is not crossed */
1.1       anton     405:     || (olddiff^n)>=0          /* it is a wrap-around effect */) {
                    406: ,:
                    407:  r> swap
                    408:  r> r> 2dup - >r
                    409:  2 pick r@ + r@ xor 0< 0=
                    410:  3 pick r> xor 0< 0= or
1.112     pazsan    411:  IF    >r + >r @ >r
1.1       anton     412:  ELSE  >r >r drop cell+ >r THEN ;)
                    413: 
1.15      pazsan    414: \+xconds
1.1       anton     415: 
1.68      anton     416: condbranch((-loop),u R:nlimit R:n1 -- R:nlimit R:n2,gforth paren_minus_loop,
1.65      anton     417: UCell olddiff = n1-nlimit;
                    418: n2=n1-u;
1.112     pazsan    419: ,if (olddiff>u) {
1.1       anton     420: ,)
                    421: 
1.68      anton     422: condbranch((s+loop),n R:nlimit R:n1 -- R:nlimit R:n2,gforth    paren_symmetric_plus_loop,
1.1       anton     423: ""The run-time procedure compiled by S+LOOP. It loops until the index
                    424: crosses the boundary between limit and limit-sign(n). I.e. a symmetric
                    425: version of (+LOOP).""
                    426: /* !! check this thoroughly */
1.65      anton     427: Cell diff = n1-nlimit;
1.1       anton     428: Cell newdiff = diff+n;
                    429: if (n<0) {
                    430:     diff = -diff;
                    431:     newdiff = -newdiff;
                    432: }
1.65      anton     433: n2=n1+n;
1.112     pazsan    434: ,if (diff>=0 || newdiff<0) {
1.1       anton     435: ,)
                    436: 
1.15      pazsan    437: \+
1.1       anton     438: 
1.112     pazsan    439: (for)   ( ncount -- R:nlimit R:ncount )         cmFORTH         paren_for
1.1       anton     440: /* or (for) = >r -- collides with unloop! */
1.65      anton     441: nlimit=0;
1.1       anton     442: :
                    443:  r> swap 0 >r >r >r ;
                    444: 
1.112     pazsan    445: (do)    ( nlimit nstart -- R:nlimit R:nstart )  gforth          paren_do
1.1       anton     446: :
                    447:  r> swap rot >r >r >r ;
                    448: 
1.112     pazsan    449: (?do) ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth  paren_question_do
                    450: #ifdef NO_IP
                    451:     INST_TAIL;
                    452: #endif
1.1       anton     453: if (nstart == nlimit) {
1.112     pazsan    454: #ifdef NO_IP
                    455:     JUMP(a_target);
                    456: #else
                    457:     SET_IP((Xt *)a_target);
                    458:     INST_TAIL; NEXT_P2;
                    459: #endif
1.1       anton     460: }
1.87      anton     461: SUPER_CONTINUE;
1.1       anton     462: :
                    463:   2dup =
                    464:   IF   r> swap rot >r >r
1.112     pazsan    465:        @ >r
1.1       anton     466:   ELSE r> swap rot >r >r
                    467:        cell+ >r
                    468:   THEN ;                               \ --> CORE-EXT
                    469: 
1.15      pazsan    470: \+xconds
1.1       anton     471: 
1.112     pazsan    472: (+do)  ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth paren_plus_do
                    473: #ifdef NO_IP
                    474:     INST_TAIL;
                    475: #endif
1.1       anton     476: if (nstart >= nlimit) {
1.112     pazsan    477: #ifdef NO_IP
                    478:     JUMP(a_target);
                    479: #else
                    480:     SET_IP((Xt *)a_target);
                    481:     INST_TAIL; NEXT_P2;
                    482: #endif
1.1       anton     483: }
1.87      anton     484: SUPER_CONTINUE;
1.1       anton     485: :
                    486:  swap 2dup
                    487:  r> swap >r swap >r
                    488:  >=
                    489:  IF
1.112     pazsan    490:      @
1.1       anton     491:  ELSE
                    492:      cell+
                    493:  THEN  >r ;
                    494: 
1.112     pazsan    495: (u+do) ( #a_target ulimit ustart -- R:ulimit R:ustart ) gforth paren_u_plus_do
                    496: #ifdef NO_IP
                    497:     INST_TAIL;
                    498: #endif
1.1       anton     499: if (ustart >= ulimit) {
1.112     pazsan    500: #ifdef NO_IP
                    501: JUMP(a_target);
                    502: #else
                    503: SET_IP((Xt *)a_target);
                    504: INST_TAIL; NEXT_P2;
                    505: #endif
1.1       anton     506: }
1.87      anton     507: SUPER_CONTINUE;
1.1       anton     508: :
                    509:  swap 2dup
                    510:  r> swap >r swap >r
                    511:  u>=
                    512:  IF
1.112     pazsan    513:      @
1.1       anton     514:  ELSE
                    515:      cell+
                    516:  THEN  >r ;
                    517: 
1.112     pazsan    518: (-do)  ( #a_target nlimit nstart -- R:nlimit R:nstart ) gforth paren_minus_do
                    519: #ifdef NO_IP
                    520:     INST_TAIL;
                    521: #endif
1.1       anton     522: if (nstart <= nlimit) {
1.112     pazsan    523: #ifdef NO_IP
                    524: JUMP(a_target);
                    525: #else
                    526: SET_IP((Xt *)a_target);
                    527: INST_TAIL; NEXT_P2;
                    528: #endif
1.1       anton     529: }
1.87      anton     530: SUPER_CONTINUE;
1.1       anton     531: :
                    532:  swap 2dup
                    533:  r> swap >r swap >r
                    534:  <=
                    535:  IF
1.112     pazsan    536:      @
1.1       anton     537:  ELSE
                    538:      cell+
                    539:  THEN  >r ;
                    540: 
1.112     pazsan    541: (u-do) ( #a_target ulimit ustart -- R:ulimit R:ustart ) gforth paren_u_minus_do
                    542: #ifdef NO_IP
                    543:     INST_TAIL;
                    544: #endif
1.1       anton     545: if (ustart <= ulimit) {
1.112     pazsan    546: #ifdef NO_IP
                    547: JUMP(a_target);
                    548: #else
                    549: SET_IP((Xt *)a_target);
                    550: INST_TAIL; NEXT_P2;
                    551: #endif
1.1       anton     552: }
1.87      anton     553: SUPER_CONTINUE;
1.1       anton     554: :
                    555:  swap 2dup
                    556:  r> swap >r swap >r
                    557:  u<=
                    558:  IF
1.112     pazsan    559:      @
1.1       anton     560:  ELSE
                    561:      cell+
                    562:  THEN  >r ;
                    563: 
1.15      pazsan    564: \+
1.1       anton     565: 
1.5       jwilke    566: \ don't make any assumptions where the return stack is!!
                    567: \ implement this in machine code if it should run quickly!
                    568: 
1.65      anton     569: i      ( R:n -- R:n n )                core
1.1       anton     570: :
1.5       jwilke    571: \ rp@ cell+ @ ;
                    572:   r> r> tuck >r >r ;
1.1       anton     573: 
1.65      anton     574: i'     ( R:w R:w2 -- R:w R:w2 w )              gforth          i_tick
1.1       anton     575: :
1.5       jwilke    576: \ rp@ cell+ cell+ @ ;
                    577:   r> r> r> dup itmp ! >r >r >r itmp @ ;
                    578: variable itmp
1.1       anton     579: 
1.65      anton     580: j      ( R:n R:d1 -- n R:n R:d1 )              core
1.1       anton     581: :
1.5       jwilke    582: \ rp@ cell+ cell+ cell+ @ ;
                    583:   r> r> r> r> dup itmp ! >r >r >r >r itmp @ ;
                    584: [IFUNDEF] itmp variable itmp [THEN]
1.1       anton     585: 
1.65      anton     586: k      ( R:n R:d1 R:d2 -- n R:n R:d1 R:d2 )            gforth
1.1       anton     587: :
1.5       jwilke    588: \ rp@ [ 5 cells ] Literal + @ ;
                    589:   r> r> r> r> r> r> dup itmp ! >r >r >r >r >r >r itmp @ ;
                    590: [IFUNDEF] itmp variable itmp [THEN]
1.31      jwilke    591: 
                    592: \f[THEN]
1.1       anton     593: 
                    594: \ digit is high-level: 0/0%
                    595: 
1.83      pazsan    596: \g strings
                    597: 
1.47      anton     598: move   ( c_from c_to ucount -- )               core
1.52      anton     599: ""Copy the contents of @i{ucount} aus at @i{c-from} to
1.33      anton     600: @i{c-to}. @code{move} works correctly even if the two areas overlap.""
1.52      anton     601: /* !! note that the standard specifies addr, not c-addr */
1.1       anton     602: memmove(c_to,c_from,ucount);
                    603: /* make an Ifdef for bsd and others? */
                    604: :
                    605:  >r 2dup u< IF r> cmove> ELSE r> cmove THEN ;
                    606: 
1.47      anton     607: cmove  ( c_from c_to u -- )    string  c_move
1.33      anton     608: ""Copy the contents of @i{ucount} characters from data space at
                    609: @i{c-from} to @i{c-to}. The copy proceeds @code{char}-by-@code{char}
                    610: from low address to high address; i.e., for overlapping areas it is
                    611: safe if @i{c-to}=<@i{c-from}.""
1.125     anton     612: cmove(c_from,c_to,u);
1.1       anton     613: :
                    614:  bounds ?DO  dup c@ I c! 1+  LOOP  drop ;
                    615: 
1.47      anton     616: cmove> ( c_from c_to u -- )    string  c_move_up
1.33      anton     617: ""Copy the contents of @i{ucount} characters from data space at
                    618: @i{c-from} to @i{c-to}. The copy proceeds @code{char}-by-@code{char}
                    619: from high address to low address; i.e., for overlapping areas it is
                    620: safe if @i{c-to}>=@i{c-from}.""
1.125     anton     621: cmove_up(c_from,c_to,u);
1.1       anton     622: :
                    623:  dup 0= IF  drop 2drop exit  THEN
                    624:  rot over + -rot bounds swap 1-
                    625:  DO  1- dup c@ I c!  -1 +LOOP  drop ;
                    626: 
1.47      anton     627: fill   ( c_addr u c -- )       core
1.52      anton     628: ""Store @i{c} in @i{u} chars starting at @i{c-addr}.""
1.1       anton     629: memset(c_addr,c,u);
                    630: :
                    631:  -rot bounds
                    632:  ?DO  dup I c!  LOOP  drop ;
                    633: 
1.47      anton     634: compare        ( c_addr1 u1 c_addr2 u2 -- n )  string
1.29      crook     635: ""Compare two strings lexicographically. If they are equal, @i{n} is 0; if
                    636: the first string is smaller, @i{n} is -1; if the first string is larger, @i{n}
1.1       anton     637: is 1. Currently this is based on the machine's character
1.26      crook     638: comparison. In the future, this may change to consider the current
1.1       anton     639: locale and its collation order.""
1.46      pazsan    640: /* close ' to keep fontify happy */ 
1.125     anton     641: n = compare(c_addr1, u1, c_addr2, u2);
1.1       anton     642: :
1.43      pazsan    643:  rot 2dup swap - >r min swap -text dup
                    644:  IF  rdrop  ELSE  drop r> sgn  THEN ;
1.143     pazsan    645: : -text ( c_addr1 u c_addr2 -- n )
                    646:  swap bounds
                    647:  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                    648:  ELSE  c@ I c@ - unloop  THEN  sgn ;
1.43      pazsan    649: : sgn ( n -- -1/0/1 )
                    650:  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton     651: 
1.125     anton     652: \ -text is only used by replaced primitives now; move it elsewhere
                    653: \ -text        ( c_addr1 u c_addr2 -- n )      new     dash_text
                    654: \ n = memcmp(c_addr1, c_addr2, u);
                    655: \ if (n<0)
                    656: \   n = -1;
                    657: \ else if (n>0)
                    658: \   n = 1;
                    659: \ :
                    660: \  swap bounds
                    661: \  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                    662: \  ELSE  c@ I c@ - unloop  THEN  sgn ;
                    663: \ : sgn ( n -- -1/0/1 )
                    664: \  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton     665: 
1.47      anton     666: toupper        ( c1 -- c2 )    gforth
1.29      crook     667: ""If @i{c1} is a lower-case character (in the current locale), @i{c2}
1.25      anton     668: is the equivalent upper-case character. All other characters are unchanged.""
1.1       anton     669: c2 = toupper(c1);
                    670: :
                    671:  dup [char] a - [ char z char a - 1 + ] Literal u<  bl and - ;
                    672: 
1.47      anton     673: /string        ( c_addr1 u1 n -- c_addr2 u2 )  string  slash_string
1.29      crook     674: ""Adjust the string specified by @i{c-addr1, u1} to remove @i{n}
1.27      crook     675: characters from the start of the string.""
1.1       anton     676: c_addr2 = c_addr1+n;
                    677: u2 = u1-n;
                    678: :
                    679:  tuck - >r + r> dup 0< IF  - 0  THEN ;
                    680: 
1.83      pazsan    681: \g arith
                    682: 
1.112     pazsan    683: lit    ( #w -- w )             gforth
                    684: :
                    685:  r> dup @ swap cell+ >r ;
                    686: 
1.47      anton     687: +      ( n1 n2 -- n )          core    plus
1.1       anton     688: n = n1+n2;
                    689: 
1.112     pazsan    690: \ lit+ / lit_plus = lit +
                    691: 
                    692: lit+   ( n1 #n2 -- n )         new     lit_plus
                    693: n=n1+n2;
                    694: 
1.1       anton     695: \ PFE-0.9.14 has it differently, but the next release will have it as follows
1.47      anton     696: under+ ( n1 n2 n3 -- n n2 )    gforth  under_plus
1.29      crook     697: ""add @i{n3} to @i{n1} (giving @i{n})""
1.1       anton     698: n = n1+n3;
                    699: :
                    700:  rot + swap ;
                    701: 
1.47      anton     702: -      ( n1 n2 -- n )          core    minus
1.1       anton     703: n = n1-n2;
                    704: :
                    705:  negate + ;
                    706: 
1.47      anton     707: negate ( n1 -- n2 )            core
1.1       anton     708: /* use minus as alias */
                    709: n2 = -n1;
                    710: :
                    711:  invert 1+ ;
                    712: 
1.47      anton     713: 1+     ( n1 -- n2 )            core            one_plus
1.1       anton     714: n2 = n1+1;
                    715: :
                    716:  1 + ;
                    717: 
1.47      anton     718: 1-     ( n1 -- n2 )            core            one_minus
1.1       anton     719: n2 = n1-1;
                    720: :
                    721:  1 - ;
                    722: 
1.47      anton     723: max    ( n1 n2 -- n )  core
1.1       anton     724: if (n1<n2)
                    725:   n = n2;
                    726: else
                    727:   n = n1;
                    728: :
                    729:  2dup < IF swap THEN drop ;
                    730: 
1.47      anton     731: min    ( n1 n2 -- n )  core
1.1       anton     732: if (n1<n2)
                    733:   n = n1;
                    734: else
                    735:   n = n2;
                    736: :
                    737:  2dup > IF swap THEN drop ;
                    738: 
1.52      anton     739: abs    ( n -- u )      core
                    740: if (n<0)
                    741:   u = -n;
1.1       anton     742: else
1.52      anton     743:   u = n;
1.1       anton     744: :
                    745:  dup 0< IF negate THEN ;
                    746: 
1.47      anton     747: *      ( n1 n2 -- n )          core    star
1.1       anton     748: n = n1*n2;
                    749: :
                    750:  um* drop ;
                    751: 
1.47      anton     752: /      ( n1 n2 -- n )          core    slash
1.1       anton     753: n = n1/n2;
                    754: :
                    755:  /mod nip ;
                    756: 
1.47      anton     757: mod    ( n1 n2 -- n )          core
1.1       anton     758: n = n1%n2;
                    759: :
                    760:  /mod drop ;
                    761: 
1.47      anton     762: /mod   ( n1 n2 -- n3 n4 )              core            slash_mod
1.1       anton     763: n4 = n1/n2;
                    764: n3 = n1%n2; /* !! is this correct? look into C standard! */
                    765: :
                    766:  >r s>d r> fm/mod ;
                    767: 
1.47      anton     768: 2*     ( n1 -- n2 )            core            two_star
1.52      anton     769: ""Shift left by 1; also works on unsigned numbers""
1.1       anton     770: n2 = 2*n1;
                    771: :
                    772:  dup + ;
                    773: 
1.47      anton     774: 2/     ( n1 -- n2 )            core            two_slash
1.52      anton     775: ""Arithmetic shift right by 1.  For signed numbers this is a floored
                    776: division by 2 (note that @code{/} not necessarily floors).""
1.1       anton     777: n2 = n1>>1;
                    778: :
                    779:  dup MINI and IF 1 ELSE 0 THEN
                    780:  [ bits/byte cell * 1- ] literal 
1.5       jwilke    781:  0 DO 2* swap dup 2* >r MINI and 
1.1       anton     782:      IF 1 ELSE 0 THEN or r> swap
                    783:  LOOP nip ;
                    784: 
1.47      anton     785: fm/mod ( d1 n1 -- n2 n3 )              core            f_m_slash_mod
1.29      crook     786: ""Floored division: @i{d1} = @i{n3}*@i{n1}+@i{n2}, @i{n1}>@i{n2}>=0 or 0>=@i{n2}>@i{n1}.""
1.1       anton     787: #ifdef BUGGY_LONG_LONG
                    788: DCell r = fmdiv(d1,n1);
                    789: n2=r.hi;
                    790: n3=r.lo;
                    791: #else
                    792: /* assumes that the processor uses either floored or symmetric division */
                    793: n3 = d1/n1;
                    794: n2 = d1%n1;
                    795: /* note that this 1%-3>0 is optimized by the compiler */
                    796: if (1%-3>0 && (d1<0) != (n1<0) && n2!=0) {
                    797:   n3--;
                    798:   n2+=n1;
                    799: }
                    800: #endif
                    801: :
                    802:  dup >r dup 0< IF  negate >r dnegate r>  THEN
                    803:  over       0< IF  tuck + swap  THEN
                    804:  um/mod
                    805:  r> 0< IF  swap negate swap  THEN ;
                    806: 
1.47      anton     807: sm/rem ( d1 n1 -- n2 n3 )              core            s_m_slash_rem
1.29      crook     808: ""Symmetric division: @i{d1} = @i{n3}*@i{n1}+@i{n2}, sign(@i{n2})=sign(@i{d1}) or 0.""
1.1       anton     809: #ifdef BUGGY_LONG_LONG
                    810: DCell r = smdiv(d1,n1);
                    811: n2=r.hi;
                    812: n3=r.lo;
                    813: #else
                    814: /* assumes that the processor uses either floored or symmetric division */
                    815: n3 = d1/n1;
                    816: n2 = d1%n1;
                    817: /* note that this 1%-3<0 is optimized by the compiler */
                    818: if (1%-3<0 && (d1<0) != (n1<0) && n2!=0) {
                    819:   n3++;
                    820:   n2-=n1;
                    821: }
                    822: #endif
                    823: :
                    824:  over >r dup >r abs -rot
                    825:  dabs rot um/mod
                    826:  r> r@ xor 0< IF       negate       THEN
                    827:  r>        0< IF  swap negate swap  THEN ;
                    828: 
1.47      anton     829: m*     ( n1 n2 -- d )          core    m_star
1.1       anton     830: #ifdef BUGGY_LONG_LONG
                    831: d = mmul(n1,n2);
                    832: #else
                    833: d = (DCell)n1 * (DCell)n2;
                    834: #endif
                    835: :
                    836:  2dup      0< and >r
                    837:  2dup swap 0< and >r
                    838:  um* r> - r> - ;
                    839: 
1.47      anton     840: um*    ( u1 u2 -- ud )         core    u_m_star
1.1       anton     841: /* use u* as alias */
                    842: #ifdef BUGGY_LONG_LONG
                    843: ud = ummul(u1,u2);
                    844: #else
                    845: ud = (UDCell)u1 * (UDCell)u2;
                    846: #endif
                    847: :
1.137     pazsan    848:    0 -rot dup [ 8 cells ] literal -
1.1       anton     849:    DO
1.137     pazsan    850:        dup 0< I' and d2*+ drop
                    851:    LOOP ;
1.1       anton     852: : d2*+ ( ud n -- ud+n c )
                    853:    over MINI
                    854:    and >r >r 2dup d+ swap r> + swap r> ;
                    855: 
1.47      anton     856: um/mod ( ud u1 -- u2 u3 )              core    u_m_slash_mod
1.32      anton     857: ""ud=u3*u1+u2, u1>u2>=0""
1.1       anton     858: #ifdef BUGGY_LONG_LONG
                    859: UDCell r = umdiv(ud,u1);
                    860: u2=r.hi;
                    861: u3=r.lo;
                    862: #else
                    863: u3 = ud/u1;
                    864: u2 = ud%u1;
                    865: #endif
                    866: :
                    867:    0 swap [ 8 cells 1 + ] literal 0
1.5       jwilke    868:    ?DO /modstep
1.1       anton     869:    LOOP drop swap 1 rshift or swap ;
                    870: : /modstep ( ud c R: u -- ud-?u c R: u )
1.5       jwilke    871:    >r over r@ u< 0= or IF r@ - 1 ELSE 0 THEN  d2*+ r> ;
1.1       anton     872: : d2*+ ( ud n -- ud+n c )
                    873:    over MINI
                    874:    and >r >r 2dup d+ swap r> + swap r> ;
                    875: 
1.47      anton     876: m+     ( d1 n -- d2 )          double          m_plus
1.1       anton     877: #ifdef BUGGY_LONG_LONG
                    878: d2.lo = d1.lo+n;
                    879: d2.hi = d1.hi - (n<0) + (d2.lo<d1.lo);
                    880: #else
                    881: d2 = d1+n;
                    882: #endif
                    883: :
                    884:  s>d d+ ;
                    885: 
1.47      anton     886: d+     ( d1 d2 -- d )          double  d_plus
1.1       anton     887: #ifdef BUGGY_LONG_LONG
                    888: d.lo = d1.lo+d2.lo;
                    889: d.hi = d1.hi + d2.hi + (d.lo<d1.lo);
                    890: #else
                    891: d = d1+d2;
                    892: #endif
                    893: :
                    894:  rot + >r tuck + swap over u> r> swap - ;
                    895: 
1.47      anton     896: d-     ( d1 d2 -- d )          double          d_minus
1.1       anton     897: #ifdef BUGGY_LONG_LONG
                    898: d.lo = d1.lo - d2.lo;
                    899: d.hi = d1.hi-d2.hi-(d1.lo<d2.lo);
                    900: #else
                    901: d = d1-d2;
                    902: #endif
                    903: :
                    904:  dnegate d+ ;
                    905: 
1.47      anton     906: dnegate        ( d1 -- d2 )            double  d_negate
1.1       anton     907: /* use dminus as alias */
                    908: #ifdef BUGGY_LONG_LONG
                    909: d2 = dnegate(d1);
                    910: #else
                    911: d2 = -d1;
                    912: #endif
                    913: :
                    914:  invert swap negate tuck 0= - ;
                    915: 
1.47      anton     916: d2*    ( d1 -- d2 )            double          d_two_star
1.52      anton     917: ""Shift left by 1; also works on unsigned numbers""
1.1       anton     918: #ifdef BUGGY_LONG_LONG
                    919: d2.lo = d1.lo<<1;
                    920: d2.hi = (d1.hi<<1) | (d1.lo>>(CELL_BITS-1));
                    921: #else
                    922: d2 = 2*d1;
                    923: #endif
                    924: :
                    925:  2dup d+ ;
                    926: 
1.47      anton     927: d2/    ( d1 -- d2 )            double          d_two_slash
1.52      anton     928: ""Arithmetic shift right by 1.  For signed numbers this is a floored
                    929: division by 2.""
1.1       anton     930: #ifdef BUGGY_LONG_LONG
                    931: d2.hi = d1.hi>>1;
                    932: d2.lo= (d1.lo>>1) | (d1.hi<<(CELL_BITS-1));
                    933: #else
                    934: d2 = d1>>1;
                    935: #endif
                    936: :
                    937:  dup 1 and >r 2/ swap 2/ [ 1 8 cells 1- lshift 1- ] Literal and
                    938:  r> IF  [ 1 8 cells 1- lshift ] Literal + THEN  swap ;
                    939: 
1.47      anton     940: and    ( w1 w2 -- w )          core
1.1       anton     941: w = w1&w2;
                    942: 
1.47      anton     943: or     ( w1 w2 -- w )          core
1.1       anton     944: w = w1|w2;
                    945: :
                    946:  invert swap invert and invert ;
                    947: 
1.47      anton     948: xor    ( w1 w2 -- w )          core    x_or
1.1       anton     949: w = w1^w2;
                    950: 
1.47      anton     951: invert ( w1 -- w2 )            core
1.1       anton     952: w2 = ~w1;
                    953: :
                    954:  MAXU xor ;
                    955: 
1.47      anton     956: rshift ( u1 n -- u2 )          core    r_shift
1.53      anton     957: ""Logical shift right by @i{n} bits.""
1.1       anton     958:   u2 = u1>>n;
                    959: :
                    960:     0 ?DO 2/ MAXI and LOOP ;
                    961: 
1.47      anton     962: lshift ( u1 n -- u2 )          core    l_shift
1.1       anton     963:   u2 = u1<<n;
                    964: :
                    965:     0 ?DO 2* LOOP ;
                    966: 
1.110     pazsan    967: \g compare
                    968: 
1.1       anton     969: \ comparisons(prefix, args, prefix, arg1, arg2, wordsets...)
                    970: define(comparisons,
1.47      anton     971: $1=    ( $2 -- f )             $6      $3equals
1.1       anton     972: f = FLAG($4==$5);
                    973: :
                    974:     [ char $1x char 0 = [IF]
                    975:        ] IF false ELSE true THEN [
                    976:     [ELSE]
                    977:        ] xor 0= [
                    978:     [THEN] ] ;
                    979: 
1.47      anton     980: $1<>   ( $2 -- f )             $7      $3not_equals
1.1       anton     981: f = FLAG($4!=$5);
                    982: :
                    983:     [ char $1x char 0 = [IF]
                    984:        ] IF true ELSE false THEN [
                    985:     [ELSE]
                    986:        ] xor 0<> [
                    987:     [THEN] ] ;
                    988: 
1.47      anton     989: $1<    ( $2 -- f )             $8      $3less_than
1.1       anton     990: f = FLAG($4<$5);
                    991: :
                    992:     [ char $1x char 0 = [IF]
                    993:        ] MINI and 0<> [
                    994:     [ELSE] char $1x char u = [IF]
                    995:        ]   2dup xor 0<  IF nip ELSE - THEN 0<  [
                    996:        [ELSE]
                    997:            ] MINI xor >r MINI xor r> u< [
                    998:        [THEN]
                    999:     [THEN] ] ;
                   1000: 
1.47      anton    1001: $1>    ( $2 -- f )             $9      $3greater_than
1.1       anton    1002: f = FLAG($4>$5);
                   1003: :
                   1004:     [ char $1x char 0 = [IF] ] negate [ [ELSE] ] swap [ [THEN] ]
                   1005:     $1< ;
                   1006: 
1.47      anton    1007: $1<=   ( $2 -- f )             gforth  $3less_or_equal
1.1       anton    1008: f = FLAG($4<=$5);
                   1009: :
                   1010:     $1> 0= ;
                   1011: 
1.47      anton    1012: $1>=   ( $2 -- f )             gforth  $3greater_or_equal
1.1       anton    1013: f = FLAG($4>=$5);
                   1014: :
                   1015:     [ char $1x char 0 = [IF] ] negate [ [ELSE] ] swap [ [THEN] ]
                   1016:     $1<= ;
                   1017: 
                   1018: )
                   1019: 
                   1020: comparisons(0, n, zero_, n, 0, core, core-ext, core, core-ext)
                   1021: comparisons(, n1 n2, , n1, n2, core, core-ext, core, core)
                   1022: comparisons(u, u1 u2, u_, u1, u2, gforth, gforth, core, core-ext)
                   1023: 
                   1024: \ dcomparisons(prefix, args, prefix, arg1, arg2, wordsets...)
                   1025: define(dcomparisons,
1.47      anton    1026: $1=    ( $2 -- f )             $6      $3equals
1.1       anton    1027: #ifdef BUGGY_LONG_LONG
                   1028: f = FLAG($4.lo==$5.lo && $4.hi==$5.hi);
                   1029: #else
                   1030: f = FLAG($4==$5);
                   1031: #endif
                   1032: 
1.47      anton    1033: $1<>   ( $2 -- f )             $7      $3not_equals
1.1       anton    1034: #ifdef BUGGY_LONG_LONG
                   1035: f = FLAG($4.lo!=$5.lo || $4.hi!=$5.hi);
                   1036: #else
                   1037: f = FLAG($4!=$5);
                   1038: #endif
                   1039: 
1.47      anton    1040: $1<    ( $2 -- f )             $8      $3less_than
1.1       anton    1041: #ifdef BUGGY_LONG_LONG
                   1042: f = FLAG($4.hi==$5.hi ? $4.lo<$5.lo : $4.hi<$5.hi);
                   1043: #else
                   1044: f = FLAG($4<$5);
                   1045: #endif
                   1046: 
1.47      anton    1047: $1>    ( $2 -- f )             $9      $3greater_than
1.1       anton    1048: #ifdef BUGGY_LONG_LONG
                   1049: f = FLAG($4.hi==$5.hi ? $4.lo>$5.lo : $4.hi>$5.hi);
                   1050: #else
                   1051: f = FLAG($4>$5);
                   1052: #endif
                   1053: 
1.47      anton    1054: $1<=   ( $2 -- f )             gforth  $3less_or_equal
1.1       anton    1055: #ifdef BUGGY_LONG_LONG
                   1056: f = FLAG($4.hi==$5.hi ? $4.lo<=$5.lo : $4.hi<=$5.hi);
                   1057: #else
                   1058: f = FLAG($4<=$5);
                   1059: #endif
                   1060: 
1.47      anton    1061: $1>=   ( $2 -- f )             gforth  $3greater_or_equal
1.1       anton    1062: #ifdef BUGGY_LONG_LONG
                   1063: f = FLAG($4.hi==$5.hi ? $4.lo>=$5.lo : $4.hi>=$5.hi);
                   1064: #else
                   1065: f = FLAG($4>=$5);
                   1066: #endif
                   1067: 
                   1068: )
                   1069: 
1.15      pazsan   1070: \+dcomps
1.1       anton    1071: 
                   1072: dcomparisons(d, d1 d2, d_, d1, d2, double, gforth, double, gforth)
                   1073: dcomparisons(d0, d, d_zero_, d, DZERO, double, gforth, double, gforth)
                   1074: dcomparisons(du, ud1 ud2, d_u_, ud1, ud2, gforth, gforth, double-ext, gforth)
                   1075: 
1.15      pazsan   1076: \+
1.1       anton    1077: 
1.47      anton    1078: within ( u1 u2 u3 -- f )               core-ext
1.32      anton    1079: ""u2=<u1<u3 or: u3=<u2 and u1 is not in [u3,u2).  This works for
                   1080: unsigned and signed numbers (but not a mixture).  Another way to think
                   1081: about this word is to consider the numbers as a circle (wrapping
                   1082: around from @code{max-u} to 0 for unsigned, and from @code{max-n} to
                   1083: min-n for signed numbers); now consider the range from u2 towards
                   1084: increasing numbers up to and excluding u3 (giving an empty range if
1.52      anton    1085: u2=u3); if u1 is in this range, @code{within} returns true.""
1.1       anton    1086: f = FLAG(u1-u2 < u3-u2);
                   1087: :
                   1088:  over - >r - r> u< ;
                   1089: 
1.112     pazsan   1090: \g stack
                   1091: 
                   1092: useraddr       ( #u -- a_addr )        new
                   1093: a_addr = (Cell *)(up+u);
                   1094: 
                   1095: up!    ( a_addr -- )   gforth  up_store
                   1096: UP=up=(char *)a_addr;
                   1097: :
                   1098:  up ! ;
                   1099: Variable UP
                   1100: 
1.47      anton    1101: sp@    ( -- a_addr )           gforth          sp_fetch
1.1       anton    1102: a_addr = sp+1;
                   1103: 
1.47      anton    1104: sp!    ( a_addr -- )           gforth          sp_store
1.1       anton    1105: sp = a_addr;
1.64      anton    1106: /* works with and without spTOS caching */
1.1       anton    1107: 
1.47      anton    1108: rp@    ( -- a_addr )           gforth          rp_fetch
1.1       anton    1109: a_addr = rp;
                   1110: 
1.47      anton    1111: rp!    ( a_addr -- )           gforth          rp_store
1.1       anton    1112: rp = a_addr;
                   1113: 
1.15      pazsan   1114: \+floating
1.1       anton    1115: 
1.47      anton    1116: fp@    ( -- f_addr )   gforth  fp_fetch
1.1       anton    1117: f_addr = fp;
                   1118: 
1.47      anton    1119: fp!    ( f_addr -- )   gforth  fp_store
1.1       anton    1120: fp = f_addr;
                   1121: 
1.15      pazsan   1122: \+
1.1       anton    1123: 
1.65      anton    1124: >r     ( w -- R:w )            core    to_r
1.1       anton    1125: :
                   1126:  (>r) ;
                   1127: : (>r)  rp@ cell+ @ rp@ ! rp@ cell+ ! ;
                   1128: 
1.65      anton    1129: r>     ( R:w -- w )            core    r_from
1.1       anton    1130: :
                   1131:  rp@ cell+ @ rp@ @ rp@ cell+ ! (rdrop) rp@ ! ;
                   1132: Create (rdrop) ' ;s A,
                   1133: 
1.65      anton    1134: rdrop  ( R:w -- )              gforth
1.1       anton    1135: :
                   1136:  r> r> drop >r ;
                   1137: 
1.136     pazsan   1138: 2>r    ( d -- R:d )    core-ext        two_to_r
1.1       anton    1139: :
                   1140:  swap r> swap >r swap >r >r ;
                   1141: 
1.136     pazsan   1142: 2r>    ( R:d -- d )    core-ext        two_r_from
1.1       anton    1143: :
                   1144:  r> r> swap r> swap >r swap ;
                   1145: 
1.136     pazsan   1146: 2r@    ( R:d -- R:d d )        core-ext        two_r_fetch
1.1       anton    1147: :
                   1148:  i' j ;
                   1149: 
1.136     pazsan   1150: 2rdrop ( R:d -- )              gforth  two_r_drop
1.1       anton    1151: :
                   1152:  r> r> drop r> drop >r ;
                   1153: 
1.47      anton    1154: over   ( w1 w2 -- w1 w2 w1 )           core
1.1       anton    1155: :
                   1156:  sp@ cell+ @ ;
                   1157: 
1.47      anton    1158: drop   ( w -- )                core
1.1       anton    1159: :
                   1160:  IF THEN ;
                   1161: 
1.47      anton    1162: swap   ( w1 w2 -- w2 w1 )              core
1.1       anton    1163: :
                   1164:  >r (swap) ! r> (swap) @ ;
                   1165: Variable (swap)
                   1166: 
1.47      anton    1167: dup    ( w -- w w )            core    dupe
1.1       anton    1168: :
                   1169:  sp@ @ ;
                   1170: 
1.47      anton    1171: rot    ( w1 w2 w3 -- w2 w3 w1 )        core    rote
1.1       anton    1172: :
                   1173: [ defined? (swap) [IF] ]
                   1174:     (swap) ! (rot) ! >r (rot) @ (swap) @ r> ;
                   1175: Variable (rot)
                   1176: [ELSE] ]
                   1177:     >r swap r> swap ;
                   1178: [THEN]
                   1179: 
1.47      anton    1180: -rot   ( w1 w2 w3 -- w3 w1 w2 )        gforth  not_rote
1.1       anton    1181: :
                   1182:  rot rot ;
                   1183: 
1.47      anton    1184: nip    ( w1 w2 -- w2 )         core-ext
1.1       anton    1185: :
1.6       jwilke   1186:  swap drop ;
1.1       anton    1187: 
1.47      anton    1188: tuck   ( w1 w2 -- w2 w1 w2 )   core-ext
1.1       anton    1189: :
                   1190:  swap over ;
                   1191: 
1.47      anton    1192: ?dup   ( w -- w )                      core    question_dupe
1.52      anton    1193: ""Actually the stack effect is: @code{( w -- 0 | w w )}.  It performs a
                   1194: @code{dup} if w is nonzero.""
1.1       anton    1195: if (w!=0) {
1.64      anton    1196:   IF_spTOS(*sp-- = w;)
1.1       anton    1197: #ifndef USE_TOS
                   1198:   *--sp = w;
                   1199: #endif
                   1200: }
                   1201: :
                   1202:  dup IF dup THEN ;
                   1203: 
1.47      anton    1204: pick   ( u -- w )                      core-ext
1.52      anton    1205: ""Actually the stack effect is @code{ x0 ... xu u -- x0 ... xu x0 }.""
1.1       anton    1206: w = sp[u+1];
                   1207: :
                   1208:  1+ cells sp@ + @ ;
                   1209: 
1.47      anton    1210: 2drop  ( w1 w2 -- )            core    two_drop
1.1       anton    1211: :
                   1212:  drop drop ;
                   1213: 
1.47      anton    1214: 2dup   ( w1 w2 -- w1 w2 w1 w2 )        core    two_dupe
1.1       anton    1215: :
                   1216:  over over ;
                   1217: 
1.47      anton    1218: 2over  ( w1 w2 w3 w4 -- w1 w2 w3 w4 w1 w2 )    core    two_over
1.1       anton    1219: :
                   1220:  3 pick 3 pick ;
                   1221: 
1.47      anton    1222: 2swap  ( w1 w2 w3 w4 -- w3 w4 w1 w2 )  core    two_swap
1.1       anton    1223: :
                   1224:  rot >r rot r> ;
                   1225: 
1.47      anton    1226: 2rot   ( w1 w2 w3 w4 w5 w6 -- w3 w4 w5 w6 w1 w2 )      double-ext      two_rote
1.1       anton    1227: :
                   1228:  >r >r 2swap r> r> 2swap ;
                   1229: 
1.47      anton    1230: 2nip   ( w1 w2 w3 w4 -- w3 w4 )        gforth  two_nip
1.1       anton    1231: :
                   1232:  2swap 2drop ;
                   1233: 
1.47      anton    1234: 2tuck  ( w1 w2 w3 w4 -- w3 w4 w1 w2 w3 w4 )    gforth  two_tuck
1.1       anton    1235: :
                   1236:  2swap 2over ;
                   1237: 
                   1238: \ toggle is high-level: 0.11/0.42%
                   1239: 
1.110     pazsan   1240: \g memory
                   1241: 
1.47      anton    1242: @      ( a_addr -- w )         core    fetch
1.52      anton    1243: ""@i{w} is the cell stored at @i{a_addr}.""
1.1       anton    1244: w = *a_addr;
                   1245: 
1.112     pazsan   1246: \ lit@ / lit_fetch = lit @
                   1247: 
                   1248: lit@           ( #a_addr -- w ) new    lit_fetch
                   1249: w = *a_addr;
                   1250: 
1.47      anton    1251: !      ( w a_addr -- )         core    store
1.52      anton    1252: ""Store @i{w} into the cell at @i{a-addr}.""
1.1       anton    1253: *a_addr = w;
                   1254: 
1.47      anton    1255: +!     ( n a_addr -- )         core    plus_store
1.52      anton    1256: ""Add @i{n} to the cell at @i{a-addr}.""
1.1       anton    1257: *a_addr += n;
                   1258: :
                   1259:  tuck @ + swap ! ;
                   1260: 
1.47      anton    1261: c@     ( c_addr -- c )         core    c_fetch
1.52      anton    1262: ""@i{c} is the char stored at @i{c_addr}.""
1.1       anton    1263: c = *c_addr;
                   1264: :
                   1265: [ bigendian [IF] ]
                   1266:     [ cell>bit 4 = [IF] ]
                   1267:        dup [ 0 cell - ] Literal and @ swap 1 and
                   1268:        IF  $FF and  ELSE  8>>  THEN  ;
                   1269:     [ [ELSE] ]
                   1270:        dup [ cell 1- ] literal and
                   1271:        tuck - @ swap [ cell 1- ] literal xor
                   1272:        0 ?DO 8>> LOOP $FF and
                   1273:     [ [THEN] ]
                   1274: [ [ELSE] ]
                   1275:     [ cell>bit 4 = [IF] ]
                   1276:        dup [ 0 cell - ] Literal and @ swap 1 and
                   1277:        IF  8>>  ELSE  $FF and  THEN
                   1278:     [ [ELSE] ]
                   1279:        dup [ cell  1- ] literal and 
                   1280:        tuck - @ swap
                   1281:        0 ?DO 8>> LOOP 255 and
                   1282:     [ [THEN] ]
                   1283: [ [THEN] ]
                   1284: ;
                   1285: : 8>> 2/ 2/ 2/ 2/  2/ 2/ 2/ 2/ ;
                   1286: 
1.47      anton    1287: c!     ( c c_addr -- )         core    c_store
1.52      anton    1288: ""Store @i{c} into the char at @i{c-addr}.""
1.1       anton    1289: *c_addr = c;
                   1290: :
                   1291: [ bigendian [IF] ]
                   1292:     [ cell>bit 4 = [IF] ]
                   1293:        tuck 1 and IF  $FF and  ELSE  8<<  THEN >r
                   1294:        dup -2 and @ over 1 and cells masks + @ and
                   1295:        r> or swap -2 and ! ;
                   1296:        Create masks $00FF , $FF00 ,
                   1297:     [ELSE] ]
                   1298:        dup [ cell 1- ] literal and dup 
                   1299:        [ cell 1- ] literal xor >r
                   1300:        - dup @ $FF r@ 0 ?DO 8<< LOOP invert and
                   1301:        rot $FF and r> 0 ?DO 8<< LOOP or swap ! ;
                   1302:     [THEN]
                   1303: [ELSE] ]
                   1304:     [ cell>bit 4 = [IF] ]
                   1305:        tuck 1 and IF  8<<  ELSE  $FF and  THEN >r
                   1306:        dup -2 and @ over 1 and cells masks + @ and
                   1307:        r> or swap -2 and ! ;
                   1308:        Create masks $FF00 , $00FF ,
                   1309:     [ELSE] ]
                   1310:        dup [ cell 1- ] literal and dup >r
                   1311:        - dup @ $FF r@ 0 ?DO 8<< LOOP invert and
                   1312:        rot $FF and r> 0 ?DO 8<< LOOP or swap ! ;
                   1313:     [THEN]
                   1314: [THEN]
                   1315: : 8<< 2* 2* 2* 2*  2* 2* 2* 2* ;
                   1316: 
1.47      anton    1317: 2!     ( w1 w2 a_addr -- )             core    two_store
1.52      anton    1318: ""Store @i{w2} into the cell at @i{c-addr} and @i{w1} into the next cell.""
1.1       anton    1319: a_addr[0] = w2;
                   1320: a_addr[1] = w1;
                   1321: :
                   1322:  tuck ! cell+ ! ;
                   1323: 
1.47      anton    1324: 2@     ( a_addr -- w1 w2 )             core    two_fetch
1.52      anton    1325: ""@i{w2} is the content of the cell stored at @i{a-addr}, @i{w1} is
                   1326: the content of the next cell.""
1.1       anton    1327: w2 = a_addr[0];
                   1328: w1 = a_addr[1];
                   1329: :
                   1330:  dup cell+ @ swap @ ;
                   1331: 
1.47      anton    1332: cell+  ( a_addr1 -- a_addr2 )  core    cell_plus
1.52      anton    1333: ""@code{1 cells +}""
1.1       anton    1334: a_addr2 = a_addr1+1;
                   1335: :
                   1336:  cell + ;
                   1337: 
1.47      anton    1338: cells  ( n1 -- n2 )            core
1.52      anton    1339: "" @i{n2} is the number of address units of @i{n1} cells.""
1.1       anton    1340: n2 = n1 * sizeof(Cell);
                   1341: :
                   1342:  [ cell
                   1343:  2/ dup [IF] ] 2* [ [THEN]
                   1344:  2/ dup [IF] ] 2* [ [THEN]
                   1345:  2/ dup [IF] ] 2* [ [THEN]
                   1346:  2/ dup [IF] ] 2* [ [THEN]
                   1347:  drop ] ;
                   1348: 
1.47      anton    1349: char+  ( c_addr1 -- c_addr2 )  core    char_plus
1.52      anton    1350: ""@code{1 chars +}.""
1.1       anton    1351: c_addr2 = c_addr1 + 1;
                   1352: :
                   1353:  1+ ;
                   1354: 
1.47      anton    1355: (chars)        ( n1 -- n2 )    gforth  paren_chars
1.1       anton    1356: n2 = n1 * sizeof(Char);
                   1357: :
                   1358:  ;
                   1359: 
1.47      anton    1360: count  ( c_addr1 -- c_addr2 u )        core
1.56      anton    1361: ""@i{c-addr2} is the first character and @i{u} the length of the
                   1362: counted string at @i{c-addr1}.""
1.1       anton    1363: u = *c_addr1;
                   1364: c_addr2 = c_addr1+1;
                   1365: :
                   1366:  dup 1+ swap c@ ;
                   1367: 
1.110     pazsan   1368: \g compiler
                   1369: 
1.138     pazsan   1370: \+f83headerstring
                   1371: 
                   1372: (f83find)      ( c_addr u f83name1 -- f83name2 )       new     paren_f83find
                   1373: for (; f83name1 != NULL; f83name1 = (struct F83Name *)(f83name1->next))
                   1374:   if ((UCell)F83NAME_COUNT(f83name1)==u &&
                   1375:       memcasecmp(c_addr, f83name1->name, u)== 0 /* or inline? */)
                   1376:     break;
                   1377: f83name2=f83name1;
                   1378: :
                   1379:     BEGIN  dup WHILE  (find-samelen)  dup  WHILE
                   1380:        >r 2dup r@ cell+ char+ capscomp  0=
                   1381:        IF  2drop r>  EXIT  THEN
                   1382:        r> @
                   1383:     REPEAT  THEN  nip nip ;
                   1384: : (find-samelen) ( u f83name1 -- u f83name2/0 )
                   1385:     BEGIN  2dup cell+ c@ $1F and <> WHILE  @  dup 0= UNTIL  THEN ;
                   1386: : capscomp ( c_addr1 u c_addr2 -- n )
                   1387:  swap bounds
                   1388:  ?DO  dup c@ I c@ <>
                   1389:      IF  dup c@ toupper I c@ toupper =
                   1390:      ELSE  true  THEN  WHILE  1+  LOOP  drop 0
                   1391:  ELSE  c@ toupper I c@ toupper - unloop  THEN  sgn ;
                   1392: : sgn ( n -- -1/0/1 )
                   1393:  dup 0= IF EXIT THEN  0< 2* 1+ ;
                   1394: 
                   1395: \-
                   1396: 
1.112     pazsan   1397: (listlfind)    ( c_addr u longname1 -- longname2 )     new     paren_listlfind
1.125     anton    1398: longname2=listlfind(c_addr, u, longname1);
1.1       anton    1399: :
1.112     pazsan   1400:     BEGIN  dup WHILE  (findl-samelen)  dup  WHILE
                   1401:        >r 2dup r@ cell+ cell+ capscomp  0=
1.1       anton    1402:        IF  2drop r>  EXIT  THEN
                   1403:        r> @
                   1404:     REPEAT  THEN  nip nip ;
1.112     pazsan   1405: : (findl-samelen) ( u longname1 -- u longname2/0 )
                   1406:     BEGIN  2dup cell+ @ lcount-mask and <> WHILE  @  dup 0= UNTIL  THEN ;
1.144     pazsan   1407: : capscomp ( c_addr1 u c_addr2 -- n )
                   1408:  swap bounds
                   1409:  ?DO  dup c@ I c@ <>
                   1410:      IF  dup c@ toupper I c@ toupper =
                   1411:      ELSE  true  THEN  WHILE  1+  LOOP  drop 0
                   1412:  ELSE  c@ toupper I c@ toupper - unloop  THEN  sgn ;
                   1413: : sgn ( n -- -1/0/1 )
                   1414:  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton    1415: 
1.15      pazsan   1416: \+hash
1.1       anton    1417: 
1.112     pazsan   1418: (hashlfind)    ( c_addr u a_addr -- longname2 )        new     paren_hashlfind
1.125     anton    1419: longname2 = hashlfind(c_addr, u, a_addr);
1.1       anton    1420: :
                   1421:  BEGIN  dup  WHILE
1.112     pazsan   1422:         2@ >r >r dup r@ cell+ @ lcount-mask and =
                   1423:         IF  2dup r@ cell+ cell+ capscomp 0=
1.1       anton    1424:            IF  2drop r> rdrop  EXIT  THEN  THEN
                   1425:        rdrop r>
                   1426:  REPEAT nip nip ;
                   1427: 
1.112     pazsan   1428: (tablelfind)   ( c_addr u a_addr -- longname2 )        new     paren_tablelfind
1.1       anton    1429: ""A case-sensitive variant of @code{(hashfind)}""
1.125     anton    1430: longname2 = tablelfind(c_addr, u, a_addr);
1.1       anton    1431: :
                   1432:  BEGIN  dup  WHILE
1.112     pazsan   1433:         2@ >r >r dup r@ cell+ @ lcount-mask and =
                   1434:         IF  2dup r@ cell+ cell+ -text 0=
1.1       anton    1435:            IF  2drop r> rdrop  EXIT  THEN  THEN
                   1436:        rdrop r>
                   1437:  REPEAT nip nip ;
1.138     pazsan   1438: : -text ( c_addr1 u c_addr2 -- n )
                   1439:  swap bounds
                   1440:  ?DO  dup c@ I c@ = WHILE  1+  LOOP  drop 0
                   1441:  ELSE  c@ I c@ - unloop  THEN  sgn ;
                   1442: : sgn ( n -- -1/0/1 )
                   1443:  dup 0= IF EXIT THEN  0< 2* 1+ ;
1.1       anton    1444: 
1.47      anton    1445: (hashkey1)     ( c_addr u ubits -- ukey )              gforth  paren_hashkey1
1.1       anton    1446: ""ukey is the hash key for the string c_addr u fitting in ubits bits""
1.125     anton    1447: ukey = hashkey1(c_addr, u, ubits);
1.1       anton    1448: :
                   1449:  dup rot-values + c@ over 1 swap lshift 1- >r
                   1450:  tuck - 2swap r> 0 2swap bounds
                   1451:  ?DO  dup 4 pick lshift swap 3 pick rshift or
                   1452:       I c@ toupper xor
                   1453:       over and  LOOP
                   1454:  nip nip nip ;
                   1455: Create rot-values
                   1456:   5 c, 0 c, 1 c, 2 c, 3 c,  4 c, 5 c, 5 c, 5 c, 5 c,
                   1457:   3 c, 5 c, 5 c, 5 c, 5 c,  7 c, 5 c, 5 c, 5 c, 5 c,
                   1458:   7 c, 5 c, 5 c, 5 c, 5 c,  6 c, 5 c, 5 c, 5 c, 5 c,
                   1459:   7 c, 5 c, 5 c,
1.138     pazsan   1460: 
                   1461: \+
1.1       anton    1462: 
1.15      pazsan   1463: \+
1.1       anton    1464: 
1.47      anton    1465: (parse-white)  ( c_addr1 u1 -- c_addr2 u2 )    gforth  paren_parse_white
1.125     anton    1466: struct Cellpair r=parse_white(c_addr1, u1);
                   1467: c_addr2 = (Char *)(r.n1);
                   1468: u2 = r.n2;
1.1       anton    1469: :
                   1470:  BEGIN  dup  WHILE  over c@ bl <=  WHILE  1 /string
                   1471:  REPEAT  THEN  2dup
                   1472:  BEGIN  dup  WHILE  over c@ bl >   WHILE  1 /string
                   1473:  REPEAT  THEN  nip - ;
                   1474: 
1.47      anton    1475: aligned        ( c_addr -- a_addr )    core
1.29      crook    1476: "" @i{a-addr} is the first aligned address greater than or equal to @i{c-addr}.""
1.1       anton    1477: a_addr = (Cell *)((((Cell)c_addr)+(sizeof(Cell)-1))&(-sizeof(Cell)));
                   1478: :
                   1479:  [ cell 1- ] Literal + [ -1 cells ] Literal and ;
                   1480: 
1.47      anton    1481: faligned       ( c_addr -- f_addr )    float   f_aligned
1.29      crook    1482: "" @i{f-addr} is the first float-aligned address greater than or equal to @i{c-addr}.""
1.1       anton    1483: f_addr = (Float *)((((Cell)c_addr)+(sizeof(Float)-1))&(-sizeof(Float)));
                   1484: :
                   1485:  [ 1 floats 1- ] Literal + [ -1 floats ] Literal and ;
                   1486: 
1.35      jwilke   1487: \ threading stuff is currently only interesting if we have a compiler
                   1488: \fhas? standardthreading has? compiler and [IF]
1.47      anton    1489: threading-method       ( -- n )        gforth  threading_method
1.1       anton    1490: ""0 if the engine is direct threaded. Note that this may change during
                   1491: the lifetime of an image.""
                   1492: #if defined(DOUBLY_INDIRECT)
                   1493: n=2;
                   1494: #else
                   1495: # if defined(DIRECT_THREADED)
                   1496: n=0;
                   1497: # else
                   1498: n=1;
                   1499: # endif
                   1500: #endif
                   1501: :
                   1502:  1 ;
1.28      jwilke   1503: 
1.35      jwilke   1504: \f[THEN]
1.1       anton    1505: 
1.83      pazsan   1506: \g hostos
                   1507: 
1.47      anton    1508: key-file       ( wfileid -- n )                gforth  paren_key_file
1.17      pazsan   1509: #ifdef HAS_FILE
1.1       anton    1510: fflush(stdout);
1.12      pazsan   1511: n = key((FILE*)wfileid);
1.17      pazsan   1512: #else
                   1513: n = key(stdin);
                   1514: #endif
1.1       anton    1515: 
1.47      anton    1516: key?-file      ( wfileid -- n )                facility        key_q_file
1.17      pazsan   1517: #ifdef HAS_FILE
1.1       anton    1518: fflush(stdout);
1.12      pazsan   1519: n = key_query((FILE*)wfileid);
1.17      pazsan   1520: #else
                   1521: n = key_query(stdin);
                   1522: #endif
                   1523: 
                   1524: \+os
1.12      pazsan   1525: 
1.47      anton    1526: stdin  ( -- wfileid )  gforth
1.12      pazsan   1527: wfileid = (Cell)stdin;
1.1       anton    1528: 
1.47      anton    1529: stdout ( -- wfileid )  gforth
1.1       anton    1530: wfileid = (Cell)stdout;
                   1531: 
1.47      anton    1532: stderr ( -- wfileid )  gforth
1.1       anton    1533: wfileid = (Cell)stderr;
                   1534: 
1.47      anton    1535: form   ( -- urows ucols )      gforth
1.1       anton    1536: ""The number of lines and columns in the terminal. These numbers may change
                   1537: with the window size.""
                   1538: /* we could block SIGWINCH here to get a consistent size, but I don't
                   1539:  think this is necessary or always beneficial */
                   1540: urows=rows;
                   1541: ucols=cols;
                   1542: 
1.47      anton    1543: flush-icache   ( c_addr u -- ) gforth  flush_icache
1.1       anton    1544: ""Make sure that the instruction cache of the processor (if there is
1.29      crook    1545: one) does not contain stale data at @i{c-addr} and @i{u} bytes
1.1       anton    1546: afterwards. @code{END-CODE} performs a @code{flush-icache}
                   1547: automatically. Caveat: @code{flush-icache} might not work on your
                   1548: installation; this is usually the case if direct threading is not
                   1549: supported on your machine (take a look at your @file{machine.h}) and
                   1550: your machine has a separate instruction cache. In such cases,
                   1551: @code{flush-icache} does nothing instead of flushing the instruction
                   1552: cache.""
                   1553: FLUSH_ICACHE(c_addr,u);
                   1554: 
1.47      anton    1555: (bye)  ( n -- )        gforth  paren_bye
1.77      anton    1556: SUPER_END;
1.1       anton    1557: return (Label *)n;
                   1558: 
1.125     anton    1559: (system)       ( c_addr u -- wretval wior )    gforth  paren_system
1.20      pazsan   1560: #ifndef MSDOS
1.1       anton    1561: int old_tp=terminal_prepped;
                   1562: deprep_terminal();
1.20      pazsan   1563: #endif
1.1       anton    1564: wretval=system(cstr(c_addr,u,1)); /* ~ expansion on first part of string? */
                   1565: wior = IOR(wretval==-1 || (wretval==127 && errno != 0));
1.20      pazsan   1566: #ifndef MSDOS
1.1       anton    1567: if (old_tp)
                   1568:   prep_terminal();
1.20      pazsan   1569: #endif
1.1       anton    1570: 
1.47      anton    1571: getenv ( c_addr1 u1 -- c_addr2 u2 )    gforth
1.29      crook    1572: ""The string @i{c-addr1 u1} specifies an environment variable. The string @i{c-addr2 u2}
1.24      crook    1573: is the host operating system's expansion of that environment variable. If the
1.29      crook    1574: environment variable does not exist, @i{c-addr2 u2} specifies a string 0 characters
1.24      crook    1575: in length.""
1.46      pazsan   1576: /* close ' to keep fontify happy */
1.1       anton    1577: c_addr2 = getenv(cstr(c_addr1,u1,1));
                   1578: u2 = (c_addr2 == NULL ? 0 : strlen(c_addr2));
                   1579: 
1.56      anton    1580: open-pipe      ( c_addr u wfam -- wfileid wior )       gforth  open_pipe
1.84      pazsan   1581: wfileid=(Cell)popen(cstr(c_addr,u,1),pfileattr[wfam]); /* ~ expansion of 1st arg? */
1.1       anton    1582: wior = IOR(wfileid==0); /* !! the man page says that errno is not set reliably */
                   1583: 
1.47      anton    1584: close-pipe     ( wfileid -- wretval wior )             gforth  close_pipe
1.1       anton    1585: wretval = pclose((FILE *)wfileid);
                   1586: wior = IOR(wretval==-1);
                   1587: 
1.47      anton    1588: time&date      ( -- nsec nmin nhour nday nmonth nyear )        facility-ext    time_and_date
1.44      crook    1589: ""Report the current time of day. Seconds, minutes and hours are numbered from 0.
                   1590: Months are numbered from 1.""
1.127     anton    1591: #if 1
                   1592: time_t now;
                   1593: struct tm *ltime;
                   1594: time(&now);
                   1595: ltime=localtime(&now);
                   1596: #else
1.1       anton    1597: struct timeval time1;
                   1598: struct timezone zone1;
                   1599: struct tm *ltime;
                   1600: gettimeofday(&time1,&zone1);
1.51      anton    1601: /* !! Single Unix specification: 
                   1602:    If tzp is not a null pointer, the behaviour is unspecified. */
1.1       anton    1603: ltime=localtime((time_t *)&time1.tv_sec);
1.127     anton    1604: #endif
1.1       anton    1605: nyear =ltime->tm_year+1900;
                   1606: nmonth=ltime->tm_mon+1;
                   1607: nday  =ltime->tm_mday;
                   1608: nhour =ltime->tm_hour;
                   1609: nmin  =ltime->tm_min;
                   1610: nsec  =ltime->tm_sec;
                   1611: 
1.47      anton    1612: ms     ( n -- )        facility-ext
1.44      crook    1613: ""Wait at least @i{n} milli-second.""
1.1       anton    1614: struct timeval timeout;
                   1615: timeout.tv_sec=n/1000;
                   1616: timeout.tv_usec=1000*(n%1000);
                   1617: (void)select(0,0,0,0,&timeout);
                   1618: 
1.47      anton    1619: allocate       ( u -- a_addr wior )    memory
1.29      crook    1620: ""Allocate @i{u} address units of contiguous data space. The initial
1.27      crook    1621: contents of the data space is undefined. If the allocation is successful,
1.29      crook    1622: @i{a-addr} is the start address of the allocated region and @i{wior}
                   1623: is 0. If the allocation fails, @i{a-addr} is undefined and @i{wior}
1.52      anton    1624: is a non-zero I/O result code.""
1.1       anton    1625: a_addr = (Cell *)malloc(u?u:1);
                   1626: wior = IOR(a_addr==NULL);
                   1627: 
1.47      anton    1628: free   ( a_addr -- wior )              memory
1.29      crook    1629: ""Return the region of data space starting at @i{a-addr} to the system.
1.52      anton    1630: The region must originally have been obtained using @code{allocate} or
1.29      crook    1631: @code{resize}. If the operational is successful, @i{wior} is 0.
1.52      anton    1632: If the operation fails, @i{wior} is a non-zero I/O result code.""
1.1       anton    1633: free(a_addr);
                   1634: wior = 0;
                   1635: 
1.47      anton    1636: resize ( a_addr1 u -- a_addr2 wior )   memory
1.26      crook    1637: ""Change the size of the allocated area at @i{a-addr1} to @i{u}
1.1       anton    1638: address units, possibly moving the contents to a different
1.27      crook    1639: area. @i{a-addr2} is the address of the resulting area.
1.52      anton    1640: If the operation is successful, @i{wior} is 0.
                   1641: If the operation fails, @i{wior} is a non-zero
1.29      crook    1642: I/O result code. If @i{a-addr1} is 0, Gforth's (but not the Standard)
1.27      crook    1643: @code{resize} @code{allocate}s @i{u} address units.""
1.1       anton    1644: /* the following check is not necessary on most OSs, but it is needed
                   1645:    on SunOS 4.1.2. */
1.46      pazsan   1646: /* close ' to keep fontify happy */
1.1       anton    1647: if (a_addr1==NULL)
                   1648:   a_addr2 = (Cell *)malloc(u);
                   1649: else
                   1650:   a_addr2 = (Cell *)realloc(a_addr1, u);
                   1651: wior = IOR(a_addr2==NULL);     /* !! Define a return code */
                   1652: 
1.47      anton    1653: strerror       ( n -- c_addr u )       gforth
1.1       anton    1654: c_addr = strerror(n);
                   1655: u = strlen(c_addr);
                   1656: 
1.47      anton    1657: strsignal      ( n -- c_addr u )       gforth
1.133     anton    1658: c_addr = (Address)strsignal(n);
1.1       anton    1659: u = strlen(c_addr);
                   1660: 
1.47      anton    1661: call-c ( w -- )        gforth  call_c
1.1       anton    1662: ""Call the C function pointed to by @i{w}. The C function has to
                   1663: access the stack itself. The stack pointers are exported in the global
                   1664: variables @code{SP} and @code{FP}.""
                   1665: /* This is a first attempt at support for calls to C. This may change in
                   1666:    the future */
1.64      anton    1667: IF_fpTOS(fp[0]=fpTOS);
1.1       anton    1668: FP=fp;
                   1669: SP=sp;
                   1670: ((void (*)())w)();
                   1671: sp=SP;
                   1672: fp=FP;
1.64      anton    1673: IF_spTOS(spTOS=sp[0]);
                   1674: IF_fpTOS(fpTOS=fp[0]);
1.1       anton    1675: 
1.15      pazsan   1676: \+
                   1677: \+file
1.1       anton    1678: 
1.47      anton    1679: close-file     ( wfileid -- wior )             file    close_file
1.1       anton    1680: wior = IOR(fclose((FILE *)wfileid)==EOF);
                   1681: 
1.56      anton    1682: open-file      ( c_addr u wfam -- wfileid wior )       file    open_file
                   1683: wfileid = (Cell)fopen(tilde_cstr(c_addr, u, 1), fileattr[wfam]);
1.22      crook    1684: wior =  IOR(wfileid == 0);
1.1       anton    1685: 
1.56      anton    1686: create-file    ( c_addr u wfam -- wfileid wior )       file    create_file
1.1       anton    1687: Cell   fd;
1.56      anton    1688: fd = open(tilde_cstr(c_addr, u, 1), O_CREAT|O_TRUNC|ufileattr[wfam], 0666);
1.1       anton    1689: if (fd != -1) {
1.56      anton    1690:   wfileid = (Cell)fdopen(fd, fileattr[wfam]);
1.22      crook    1691:   wior = IOR(wfileid == 0);
1.1       anton    1692: } else {
1.22      crook    1693:   wfileid = 0;
1.1       anton    1694:   wior = IOR(1);
                   1695: }
                   1696: 
1.47      anton    1697: delete-file    ( c_addr u -- wior )            file    delete_file
1.1       anton    1698: wior = IOR(unlink(tilde_cstr(c_addr, u, 1))==-1);
                   1699: 
1.47      anton    1700: rename-file    ( c_addr1 u1 c_addr2 u2 -- wior )       file-ext        rename_file
1.29      crook    1701: ""Rename file @i{c_addr1 u1} to new name @i{c_addr2 u2}""
1.125     anton    1702: wior = rename_file(c_addr1, u1, c_addr2, u2);
1.1       anton    1703: 
1.47      anton    1704: file-position  ( wfileid -- ud wior )  file    file_position
1.1       anton    1705: /* !! use tell and lseek? */
1.108     anton    1706: ud = OFF2UD(ftello((FILE *)wfileid));
                   1707: wior = IOR(UD2OFF(ud)==-1);
1.1       anton    1708: 
1.47      anton    1709: reposition-file        ( ud wfileid -- wior )  file    reposition_file
1.108     anton    1710: wior = IOR(fseeko((FILE *)wfileid, UD2OFF(ud), SEEK_SET)==-1);
1.1       anton    1711: 
1.47      anton    1712: file-size      ( wfileid -- ud wior )  file    file_size
1.1       anton    1713: struct stat buf;
                   1714: wior = IOR(fstat(fileno((FILE *)wfileid), &buf)==-1);
1.108     anton    1715: ud = OFF2UD(buf.st_size);
1.1       anton    1716: 
1.47      anton    1717: resize-file    ( ud wfileid -- wior )  file    resize_file
1.108     anton    1718: wior = IOR(ftruncate(fileno((FILE *)wfileid), UD2OFF(ud))==-1);
1.1       anton    1719: 
1.47      anton    1720: read-file      ( c_addr u1 wfileid -- u2 wior )        file    read_file
1.1       anton    1721: /* !! fread does not guarantee enough */
                   1722: u2 = fread(c_addr, sizeof(Char), u1, (FILE *)wfileid);
                   1723: wior = FILEIO(u2<u1 && ferror((FILE *)wfileid));
                   1724: /* !! is the value of ferror errno-compatible? */
                   1725: if (wior)
                   1726:   clearerr((FILE *)wfileid);
                   1727: 
1.125     anton    1728: (read-line)    ( c_addr u1 wfileid -- u2 flag u3 wior ) file   paren_read_line
                   1729: struct Cellquad r = read_line(c_addr, u1, wfileid);
                   1730: u2   = r.n1;
                   1731: flag = r.n2;
                   1732: u3   = r.n3;
                   1733: wior = r.n4;
1.1       anton    1734: 
1.15      pazsan   1735: \+
1.1       anton    1736: 
1.47      anton    1737: write-file     ( c_addr u1 wfileid -- wior )   file    write_file
1.1       anton    1738: /* !! fwrite does not guarantee enough */
1.39      pazsan   1739: #ifdef HAS_FILE
1.1       anton    1740: {
                   1741:   UCell u2 = fwrite(c_addr, sizeof(Char), u1, (FILE *)wfileid);
                   1742:   wior = FILEIO(u2<u1 && ferror((FILE *)wfileid));
                   1743:   if (wior)
                   1744:     clearerr((FILE *)wfileid);
                   1745: }
1.39      pazsan   1746: #else
                   1747: TYPE(c_addr, u1);
                   1748: #endif
1.17      pazsan   1749: 
1.47      anton    1750: emit-file      ( c wfileid -- wior )   gforth  emit_file
1.17      pazsan   1751: #ifdef HAS_FILE
1.1       anton    1752: wior = FILEIO(putc(c, (FILE *)wfileid)==EOF);
                   1753: if (wior)
                   1754:   clearerr((FILE *)wfileid);
1.17      pazsan   1755: #else
1.36      pazsan   1756: PUTC(c);
1.17      pazsan   1757: #endif
1.1       anton    1758: 
1.15      pazsan   1759: \+file
1.1       anton    1760: 
1.47      anton    1761: flush-file     ( wfileid -- wior )             file-ext        flush_file
1.1       anton    1762: wior = IOR(fflush((FILE *) wfileid)==EOF);
                   1763: 
1.56      anton    1764: file-status    ( c_addr u -- wfam wior )       file-ext        file_status
1.125     anton    1765: struct Cellpair r = file_status(c_addr, u);
                   1766: wfam = r.n1;
                   1767: wior = r.n2;
1.1       anton    1768: 
1.112     pazsan   1769: file-eof?      ( wfileid -- flag )     gforth  file_eof_query
                   1770: flag = FLAG(feof((FILE *) wfileid));
1.1       anton    1771: 
1.112     pazsan   1772: open-dir       ( c_addr u -- wdirid wior )     gforth  open_dir
                   1773: ""Open the directory specified by @i{c-addr, u}
                   1774: and return @i{dir-id} for futher access to it.""
                   1775: wdirid = (Cell)opendir(tilde_cstr(c_addr, u, 1));
                   1776: wior =  IOR(wdirid == 0);
                   1777: 
                   1778: read-dir       ( c_addr u1 wdirid -- u2 flag wior )    gforth  read_dir
                   1779: ""Attempt to read the next entry from the directory specified
                   1780: by @i{dir-id} to the buffer of length @i{u1} at address @i{c-addr}. 
                   1781: If the attempt fails because there is no more entries,
                   1782: @i{ior}=0, @i{flag}=0, @i{u2}=0, and the buffer is unmodified.
                   1783: If the attempt to read the next entry fails because of any other reason, 
                   1784: return @i{ior}<>0.
                   1785: If the attempt succeeds, store file name to the buffer at @i{c-addr}
                   1786: and return @i{ior}=0, @i{flag}=true and @i{u2} equal to the size of the file name.
                   1787: If the length of the file name is greater than @i{u1}, 
                   1788: store first @i{u1} characters from file name into the buffer and
                   1789: indicate "name too long" with @i{ior}, @i{flag}=true, and @i{u2}=@i{u1}.""
                   1790: struct dirent * dent;
                   1791: dent = readdir((DIR *)wdirid);
                   1792: wior = 0;
                   1793: flag = -1;
                   1794: if(dent == NULL) {
                   1795:   u2 = 0;
                   1796:   flag = 0;
                   1797: } else {
                   1798:   u2 = strlen(dent->d_name);
                   1799:   if(u2 > u1) {
                   1800:     u2 = u1;
                   1801:     wior = -512-ENAMETOOLONG;
                   1802:   }
                   1803:   memmove(c_addr, dent->d_name, u2);
                   1804: }
                   1805: 
                   1806: close-dir      ( wdirid -- wior )      gforth  close_dir
                   1807: ""Close the directory specified by @i{dir-id}.""
                   1808: wior = IOR(closedir((DIR *)wdirid));
                   1809: 
                   1810: filename-match ( c_addr1 u1 c_addr2 u2 -- flag )       gforth  match_file
                   1811: char * string = cstr(c_addr1, u1, 1);
                   1812: char * pattern = cstr(c_addr2, u2, 0);
                   1813: flag = FLAG(!fnmatch(pattern, string, 0));
                   1814: 
                   1815: \+
                   1816: 
                   1817: newline        ( -- c_addr u ) gforth
                   1818: ""String containing the newline sequence of the host OS""
                   1819: char newline[] = {
1.115     anton    1820: #if DIRSEP=='/'
                   1821: /* Unix */
1.112     pazsan   1822: '\n'
                   1823: #else
1.115     anton    1824: /* DOS, Win, OS/2 */
1.112     pazsan   1825: '\r','\n'
                   1826: #endif
                   1827: };
                   1828: c_addr=newline;
                   1829: u=sizeof(newline);
                   1830: :
                   1831:  "newline count ;
                   1832: Create "newline e? crlf [IF] 2 c, $0D c, [ELSE] 1 c, [THEN] $0A c,
                   1833: 
                   1834: \+os
                   1835: 
                   1836: utime  ( -- dtime )    gforth
                   1837: ""Report the current time in microseconds since some epoch.""
                   1838: struct timeval time1;
                   1839: gettimeofday(&time1,NULL);
                   1840: dtime = timeval2us(&time1);
                   1841: 
                   1842: cputime ( -- duser dsystem ) gforth
                   1843: ""duser and dsystem are the respective user- and system-level CPU
                   1844: times used since the start of the Forth system (excluding child
                   1845: processes), in microseconds (the granularity may be much larger,
                   1846: however).  On platforms without the getrusage call, it reports elapsed
                   1847: time (since some epoch) for duser and 0 for dsystem.""
                   1848: #ifdef HAVE_GETRUSAGE
                   1849: struct rusage usage;
                   1850: getrusage(RUSAGE_SELF, &usage);
                   1851: duser = timeval2us(&usage.ru_utime);
                   1852: dsystem = timeval2us(&usage.ru_stime);
                   1853: #else
                   1854: struct timeval time1;
                   1855: gettimeofday(&time1,NULL);
                   1856: duser = timeval2us(&time1);
                   1857: #ifndef BUGGY_LONG_LONG
                   1858: dsystem = (DCell)0;
                   1859: #else
                   1860: dsystem=(DCell){0,0};
                   1861: #endif
                   1862: #endif
                   1863: 
                   1864: \+
                   1865: 
                   1866: \+floating
                   1867: 
                   1868: \g floating
1.83      pazsan   1869: 
1.1       anton    1870: comparisons(f, r1 r2, f_, r1, r2, gforth, gforth, float, gforth)
                   1871: comparisons(f0, r, f_zero_, r, 0., float, gforth, float, gforth)
                   1872: 
1.47      anton    1873: d>f    ( d -- r )              float   d_to_f
1.1       anton    1874: #ifdef BUGGY_LONG_LONG
                   1875: extern double ldexp(double x, int exp);
1.113     anton    1876: if (d.hi<0) {
                   1877:   DCell d2=dnegate(d);
                   1878:   r = -(ldexp((Float)d2.hi,CELL_BITS) + (Float)d2.lo);
                   1879: } else
                   1880:   r = ldexp((Float)d.hi,CELL_BITS) + (Float)d.lo;
1.1       anton    1881: #else
                   1882: r = d;
                   1883: #endif
                   1884: 
1.47      anton    1885: f>d    ( r -- d )              float   f_to_d
1.100     pazsan   1886: extern DCell double2ll(Float r);
                   1887: d = double2ll(r);
1.1       anton    1888: 
1.47      anton    1889: f!     ( r f_addr -- ) float   f_store
1.52      anton    1890: ""Store @i{r} into the float at address @i{f-addr}.""
1.1       anton    1891: *f_addr = r;
                   1892: 
1.47      anton    1893: f@     ( f_addr -- r ) float   f_fetch
1.52      anton    1894: ""@i{r} is the float at address @i{f-addr}.""
1.1       anton    1895: r = *f_addr;
                   1896: 
1.47      anton    1897: df@    ( df_addr -- r )        float-ext       d_f_fetch
1.52      anton    1898: ""Fetch the double-precision IEEE floating-point value @i{r} from the address @i{df-addr}.""
1.1       anton    1899: #ifdef IEEE_FP
                   1900: r = *df_addr;
                   1901: #else
                   1902: !! df@
                   1903: #endif
                   1904: 
1.47      anton    1905: df!    ( r df_addr -- )        float-ext       d_f_store
1.52      anton    1906: ""Store @i{r} as double-precision IEEE floating-point value to the
                   1907: address @i{df-addr}.""
1.1       anton    1908: #ifdef IEEE_FP
                   1909: *df_addr = r;
                   1910: #else
                   1911: !! df!
                   1912: #endif
                   1913: 
1.47      anton    1914: sf@    ( sf_addr -- r )        float-ext       s_f_fetch
1.52      anton    1915: ""Fetch the single-precision IEEE floating-point value @i{r} from the address @i{sf-addr}.""
1.1       anton    1916: #ifdef IEEE_FP
                   1917: r = *sf_addr;
                   1918: #else
                   1919: !! sf@
                   1920: #endif
                   1921: 
1.47      anton    1922: sf!    ( r sf_addr -- )        float-ext       s_f_store
1.52      anton    1923: ""Store @i{r} as single-precision IEEE floating-point value to the
                   1924: address @i{sf-addr}.""
1.1       anton    1925: #ifdef IEEE_FP
                   1926: *sf_addr = r;
                   1927: #else
                   1928: !! sf!
                   1929: #endif
                   1930: 
1.47      anton    1931: f+     ( r1 r2 -- r3 ) float   f_plus
1.1       anton    1932: r3 = r1+r2;
                   1933: 
1.47      anton    1934: f-     ( r1 r2 -- r3 ) float   f_minus
1.1       anton    1935: r3 = r1-r2;
                   1936: 
1.47      anton    1937: f*     ( r1 r2 -- r3 ) float   f_star
1.1       anton    1938: r3 = r1*r2;
                   1939: 
1.47      anton    1940: f/     ( r1 r2 -- r3 ) float   f_slash
1.1       anton    1941: r3 = r1/r2;
                   1942: 
1.47      anton    1943: f**    ( r1 r2 -- r3 ) float-ext       f_star_star
1.26      crook    1944: ""@i{r3} is @i{r1} raised to the @i{r2}th power.""
1.1       anton    1945: r3 = pow(r1,r2);
                   1946: 
1.47      anton    1947: fnegate        ( r1 -- r2 )    float   f_negate
1.1       anton    1948: r2 = - r1;
                   1949: 
1.47      anton    1950: fdrop  ( r -- )                float   f_drop
1.1       anton    1951: 
1.47      anton    1952: fdup   ( r -- r r )    float   f_dupe
1.1       anton    1953: 
1.47      anton    1954: fswap  ( r1 r2 -- r2 r1 )      float   f_swap
1.1       anton    1955: 
1.47      anton    1956: fover  ( r1 r2 -- r1 r2 r1 )   float   f_over
1.1       anton    1957: 
1.47      anton    1958: frot   ( r1 r2 r3 -- r2 r3 r1 )        float   f_rote
1.1       anton    1959: 
1.47      anton    1960: fnip   ( r1 r2 -- r2 ) gforth  f_nip
1.1       anton    1961: 
1.47      anton    1962: ftuck  ( r1 r2 -- r2 r1 r2 )   gforth  f_tuck
1.1       anton    1963: 
1.47      anton    1964: float+ ( f_addr1 -- f_addr2 )  float   float_plus
1.52      anton    1965: ""@code{1 floats +}.""
1.1       anton    1966: f_addr2 = f_addr1+1;
                   1967: 
1.47      anton    1968: floats ( n1 -- n2 )    float
1.52      anton    1969: ""@i{n2} is the number of address units of @i{n1} floats.""
1.1       anton    1970: n2 = n1*sizeof(Float);
                   1971: 
1.47      anton    1972: floor  ( r1 -- r2 )    float
1.26      crook    1973: ""Round towards the next smaller integral value, i.e., round toward negative infinity.""
1.1       anton    1974: /* !! unclear wording */
                   1975: r2 = floor(r1);
                   1976: 
1.105     anton    1977: fround ( r1 -- r2 )    gforth  f_round
                   1978: ""Round to the nearest integral value.""
1.1       anton    1979: r2 = rint(r1);
                   1980: 
1.47      anton    1981: fmax   ( r1 r2 -- r3 ) float   f_max
1.1       anton    1982: if (r1<r2)
                   1983:   r3 = r2;
                   1984: else
                   1985:   r3 = r1;
                   1986: 
1.47      anton    1987: fmin   ( r1 r2 -- r3 ) float   f_min
1.1       anton    1988: if (r1<r2)
                   1989:   r3 = r1;
                   1990: else
                   1991:   r3 = r2;
                   1992: 
1.47      anton    1993: represent      ( r c_addr u -- n f1 f2 )       float
1.1       anton    1994: char *sig;
1.122     anton    1995: size_t siglen;
1.1       anton    1996: int flag;
                   1997: int decpt;
                   1998: sig=ecvt(r, u, &decpt, &flag);
1.122     anton    1999: n=(r==0. ? 1 : decpt);
1.1       anton    2000: f1=FLAG(flag!=0);
1.21      anton    2001: f2=FLAG(isdigit((unsigned)(sig[0]))!=0);
1.122     anton    2002: siglen=strlen(sig);
1.124     anton    2003: if (siglen>u) /* happens in glibc-2.1.3 if 999.. is rounded up */
                   2004:   siglen=u;
1.122     anton    2005: memcpy(c_addr,sig,siglen);
1.123     anton    2006: memset(c_addr+siglen,f2?'0':' ',u-siglen);
1.1       anton    2007: 
1.47      anton    2008: >float ( c_addr u -- flag )    float   to_float
1.56      anton    2009: ""Actual stack effect: ( c_addr u -- r t | f ).  Attempt to convert the
                   2010: character string @i{c-addr u} to internal floating-point
                   2011: representation. If the string represents a valid floating-point number
                   2012: @i{r} is placed on the floating-point stack and @i{flag} is
                   2013: true. Otherwise, @i{flag} is false. A string of blanks is a special
                   2014: case and represents the floating-point number 0.""
1.1       anton    2015: Float r;
1.125     anton    2016: flag = to_float(c_addr, u, &r);
                   2017: if (flag) {
                   2018:   IF_fpTOS(fp[0] = fpTOS);
                   2019:   fp += -1;
                   2020:   fpTOS = r;
1.1       anton    2021: }
                   2022: 
1.47      anton    2023: fabs   ( r1 -- r2 )    float-ext       f_abs
1.1       anton    2024: r2 = fabs(r1);
                   2025: 
1.47      anton    2026: facos  ( r1 -- r2 )    float-ext       f_a_cos
1.1       anton    2027: r2 = acos(r1);
                   2028: 
1.47      anton    2029: fasin  ( r1 -- r2 )    float-ext       f_a_sine
1.1       anton    2030: r2 = asin(r1);
                   2031: 
1.47      anton    2032: fatan  ( r1 -- r2 )    float-ext       f_a_tan
1.1       anton    2033: r2 = atan(r1);
                   2034: 
1.47      anton    2035: fatan2 ( r1 r2 -- r3 ) float-ext       f_a_tan_two
1.26      crook    2036: ""@i{r1/r2}=tan(@i{r3}). ANS Forth does not require, but probably
1.1       anton    2037: intends this to be the inverse of @code{fsincos}. In gforth it is.""
                   2038: r3 = atan2(r1,r2);
                   2039: 
1.47      anton    2040: fcos   ( r1 -- r2 )    float-ext       f_cos
1.1       anton    2041: r2 = cos(r1);
                   2042: 
1.47      anton    2043: fexp   ( r1 -- r2 )    float-ext       f_e_x_p
1.1       anton    2044: r2 = exp(r1);
                   2045: 
1.47      anton    2046: fexpm1 ( r1 -- r2 )    float-ext       f_e_x_p_m_one
1.1       anton    2047: ""@i{r2}=@i{e}**@i{r1}@minus{}1""
                   2048: #ifdef HAVE_EXPM1
1.3       pazsan   2049: extern double
                   2050: #ifdef NeXT
                   2051:               const
                   2052: #endif
                   2053:                     expm1(double);
1.1       anton    2054: r2 = expm1(r1);
                   2055: #else
                   2056: r2 = exp(r1)-1.;
                   2057: #endif
                   2058: 
1.47      anton    2059: fln    ( r1 -- r2 )    float-ext       f_l_n
1.1       anton    2060: r2 = log(r1);
                   2061: 
1.47      anton    2062: flnp1  ( r1 -- r2 )    float-ext       f_l_n_p_one
1.1       anton    2063: ""@i{r2}=ln(@i{r1}+1)""
                   2064: #ifdef HAVE_LOG1P
1.3       pazsan   2065: extern double
                   2066: #ifdef NeXT
                   2067:               const
                   2068: #endif
                   2069:                     log1p(double);
1.1       anton    2070: r2 = log1p(r1);
                   2071: #else
                   2072: r2 = log(r1+1.);
                   2073: #endif
                   2074: 
1.47      anton    2075: flog   ( r1 -- r2 )    float-ext       f_log
1.26      crook    2076: ""The decimal logarithm.""
1.1       anton    2077: r2 = log10(r1);
                   2078: 
1.47      anton    2079: falog  ( r1 -- r2 )    float-ext       f_a_log
1.1       anton    2080: ""@i{r2}=10**@i{r1}""
                   2081: extern double pow10(double);
                   2082: r2 = pow10(r1);
                   2083: 
1.47      anton    2084: fsin   ( r1 -- r2 )    float-ext       f_sine
1.1       anton    2085: r2 = sin(r1);
                   2086: 
1.47      anton    2087: fsincos        ( r1 -- r2 r3 ) float-ext       f_sine_cos
1.1       anton    2088: ""@i{r2}=sin(@i{r1}), @i{r3}=cos(@i{r1})""
                   2089: r2 = sin(r1);
                   2090: r3 = cos(r1);
                   2091: 
1.47      anton    2092: fsqrt  ( r1 -- r2 )    float-ext       f_square_root
1.1       anton    2093: r2 = sqrt(r1);
                   2094: 
1.47      anton    2095: ftan   ( r1 -- r2 )    float-ext       f_tan
1.1       anton    2096: r2 = tan(r1);
                   2097: :
                   2098:  fsincos f/ ;
                   2099: 
1.47      anton    2100: fsinh  ( r1 -- r2 )    float-ext       f_cinch
1.1       anton    2101: r2 = sinh(r1);
                   2102: :
                   2103:  fexpm1 fdup fdup 1. d>f f+ f/ f+ f2/ ;
                   2104: 
1.47      anton    2105: fcosh  ( r1 -- r2 )    float-ext       f_cosh
1.1       anton    2106: r2 = cosh(r1);
                   2107: :
                   2108:  fexp fdup 1/f f+ f2/ ;
                   2109: 
1.47      anton    2110: ftanh  ( r1 -- r2 )    float-ext       f_tan_h
1.1       anton    2111: r2 = tanh(r1);
                   2112: :
                   2113:  f2* fexpm1 fdup 2. d>f f+ f/ ;
                   2114: 
1.47      anton    2115: fasinh ( r1 -- r2 )    float-ext       f_a_cinch
1.1       anton    2116: r2 = asinh(r1);
                   2117: :
                   2118:  fdup fdup f* 1. d>f f+ fsqrt f/ fatanh ;
                   2119: 
1.47      anton    2120: facosh ( r1 -- r2 )    float-ext       f_a_cosh
1.1       anton    2121: r2 = acosh(r1);
                   2122: :
                   2123:  fdup fdup f* 1. d>f f- fsqrt f+ fln ;
                   2124: 
1.47      anton    2125: fatanh ( r1 -- r2 )    float-ext       f_a_tan_h
1.1       anton    2126: r2 = atanh(r1);
                   2127: :
                   2128:  fdup f0< >r fabs 1. d>f fover f- f/  f2* flnp1 f2/
                   2129:  r> IF  fnegate  THEN ;
                   2130: 
1.47      anton    2131: sfloats        ( n1 -- n2 )    float-ext       s_floats
1.52      anton    2132: ""@i{n2} is the number of address units of @i{n1}
1.29      crook    2133: single-precision IEEE floating-point numbers.""
1.1       anton    2134: n2 = n1*sizeof(SFloat);
                   2135: 
1.47      anton    2136: dfloats        ( n1 -- n2 )    float-ext       d_floats
1.52      anton    2137: ""@i{n2} is the number of address units of @i{n1}
1.29      crook    2138: double-precision IEEE floating-point numbers.""
1.1       anton    2139: n2 = n1*sizeof(DFloat);
                   2140: 
1.47      anton    2141: sfaligned      ( c_addr -- sf_addr )   float-ext       s_f_aligned
1.52      anton    2142: ""@i{sf-addr} is the first single-float-aligned address greater
1.29      crook    2143: than or equal to @i{c-addr}.""
1.1       anton    2144: sf_addr = (SFloat *)((((Cell)c_addr)+(sizeof(SFloat)-1))&(-sizeof(SFloat)));
                   2145: :
                   2146:  [ 1 sfloats 1- ] Literal + [ -1 sfloats ] Literal and ;
                   2147: 
1.47      anton    2148: dfaligned      ( c_addr -- df_addr )   float-ext       d_f_aligned
1.52      anton    2149: ""@i{df-addr} is the first double-float-aligned address greater
1.29      crook    2150: than or equal to @i{c-addr}.""
1.1       anton    2151: df_addr = (DFloat *)((((Cell)c_addr)+(sizeof(DFloat)-1))&(-sizeof(DFloat)));
                   2152: :
                   2153:  [ 1 dfloats 1- ] Literal + [ -1 dfloats ] Literal and ;
                   2154: 
1.112     pazsan   2155: v*     ( f_addr1 nstride1 f_addr2 nstride2 ucount -- r ) gforth v_star
                   2156: ""dot-product: r=v1*v2.  The first element of v1 is at f_addr1, the
                   2157: next at f_addr1+nstride1 and so on (similar for v2). Both vectors have
                   2158: ucount elements.""
1.125     anton    2159: r = v_star(f_addr1, nstride1, f_addr2, nstride2, ucount);
1.112     pazsan   2160: :
                   2161:  >r swap 2swap swap 0e r> 0 ?DO
                   2162:      dup f@ over + 2swap dup f@ f* f+ over + 2swap
                   2163:  LOOP 2drop 2drop ; 
                   2164: 
                   2165: faxpy  ( ra f_x nstridex f_y nstridey ucount -- )      gforth
                   2166: ""vy=ra*vx+vy""
1.125     anton    2167: faxpy(ra, f_x, nstridex, f_y, nstridey, ucount);
1.112     pazsan   2168: :
                   2169:  >r swap 2swap swap r> 0 ?DO
                   2170:      fdup dup f@ f* over + 2swap dup f@ f+ dup f! over + 2swap
                   2171:  LOOP 2drop 2drop fdrop ;
                   2172: 
                   2173: \+
                   2174: 
1.1       anton    2175: \ The following words access machine/OS/installation-dependent
                   2176: \   Gforth internals
                   2177: \ !! how about environmental queries DIRECT-THREADED,
                   2178: \   INDIRECT-THREADED, TOS-CACHED, FTOS-CACHED, CODEFIELD-DOES */
                   2179: 
                   2180: \ local variable implementation primitives
1.112     pazsan   2181: 
1.15      pazsan   2182: \+glocals
1.1       anton    2183: 
1.110     pazsan   2184: \g locals
                   2185: 
1.68      anton    2186: @local#        ( #noffset -- w )       gforth  fetch_local_number
                   2187: w = *(Cell *)(lp+noffset);
1.1       anton    2188: 
1.47      anton    2189: @local0        ( -- w )        new     fetch_local_zero
1.112     pazsan   2190: w = ((Cell *)lp)[0];
1.1       anton    2191: 
1.47      anton    2192: @local1        ( -- w )        new     fetch_local_four
1.112     pazsan   2193: w = ((Cell *)lp)[1];
1.1       anton    2194: 
1.47      anton    2195: @local2        ( -- w )        new     fetch_local_eight
1.112     pazsan   2196: w = ((Cell *)lp)[2];
1.1       anton    2197: 
1.47      anton    2198: @local3        ( -- w )        new     fetch_local_twelve
1.112     pazsan   2199: w = ((Cell *)lp)[3];
1.1       anton    2200: 
1.15      pazsan   2201: \+floating
1.1       anton    2202: 
1.68      anton    2203: f@local#       ( #noffset -- r )       gforth  f_fetch_local_number
                   2204: r = *(Float *)(lp+noffset);
1.1       anton    2205: 
1.47      anton    2206: f@local0       ( -- r )        new     f_fetch_local_zero
1.112     pazsan   2207: r = ((Float *)lp)[0];
1.1       anton    2208: 
1.47      anton    2209: f@local1       ( -- r )        new     f_fetch_local_eight
1.112     pazsan   2210: r = ((Float *)lp)[1];
1.1       anton    2211: 
1.15      pazsan   2212: \+
1.1       anton    2213: 
1.68      anton    2214: laddr# ( #noffset -- c_addr )  gforth  laddr_number
1.1       anton    2215: /* this can also be used to implement lp@ */
1.68      anton    2216: c_addr = (Char *)(lp+noffset);
1.1       anton    2217: 
1.68      anton    2218: lp+!#  ( #noffset -- ) gforth  lp_plus_store_number
1.1       anton    2219: ""used with negative immediate values it allocates memory on the
                   2220: local stack, a positive immediate argument drops memory from the local
                   2221: stack""
1.68      anton    2222: lp += noffset;
1.1       anton    2223: 
1.47      anton    2224: lp-    ( -- )  new     minus_four_lp_plus_store
1.1       anton    2225: lp += -sizeof(Cell);
                   2226: 
1.47      anton    2227: lp+    ( -- )  new     eight_lp_plus_store
1.1       anton    2228: lp += sizeof(Float);
                   2229: 
1.47      anton    2230: lp+2   ( -- )  new     sixteen_lp_plus_store
1.1       anton    2231: lp += 2*sizeof(Float);
                   2232: 
1.47      anton    2233: lp!    ( c_addr -- )   gforth  lp_store
1.1       anton    2234: lp = (Address)c_addr;
                   2235: 
1.47      anton    2236: >l     ( w -- )        gforth  to_l
1.1       anton    2237: lp -= sizeof(Cell);
                   2238: *(Cell *)lp = w;
                   2239: 
1.15      pazsan   2240: \+floating
1.1       anton    2241: 
1.47      anton    2242: f>l    ( r -- )        gforth  f_to_l
1.1       anton    2243: lp -= sizeof(Float);
                   2244: *(Float *)lp = r;
                   2245: 
1.47      anton    2246: fpick  ( u -- r )              gforth
1.52      anton    2247: ""Actually the stack effect is @code{ r0 ... ru u -- r0 ... ru r0 }.""
1.11      anton    2248: r = fp[u+1]; /* +1, because update of fp happens before this fragment */
                   2249: :
                   2250:  floats fp@ + f@ ;
                   2251: 
1.15      pazsan   2252: \+
                   2253: \+
1.1       anton    2254: 
1.15      pazsan   2255: \+OS
1.1       anton    2256: 
1.110     pazsan   2257: \g syslib
                   2258: 
1.131     pazsan   2259: open-lib       ( c_addr1 u1 -- u2 )    gforth  open_lib
                   2260: #if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN)
                   2261: #ifndef RTLD_GLOBAL
                   2262: #define RTLD_GLOBAL 0
                   2263: #endif
                   2264: u2=(UCell) dlopen(cstr(c_addr1, u1, 1), RTLD_GLOBAL | RTLD_LAZY);
                   2265: #else
                   2266: #  ifdef _WIN32
                   2267: u2 = (Cell) GetModuleHandle(cstr(c_addr1, u1, 1));
                   2268: #  else
                   2269: #warning Define open-lib!
                   2270: u2 = 0;
                   2271: #  endif
                   2272: #endif
                   2273: 
                   2274: lib-sym        ( c_addr1 u1 u2 -- u3 ) gforth  lib_sym
                   2275: #if defined(HAVE_LIBDL) || defined(HAVE_DLOPEN)
                   2276: u3 = (UCell) dlsym((void*)u2,cstr(c_addr1, u1, 1));
                   2277: #else
                   2278: #  ifdef _WIN32
                   2279: u3 = (Cell) GetProcAddress((HMODULE)u2, cstr(c_addr1, u1, 1));
                   2280: #  else
                   2281: #warning Define lib-sym!
                   2282: u3 = 0;
                   2283: #  endif
                   2284: #endif
                   2285: 
1.142     pazsan   2286: wcall  ( u -- )        gforth
                   2287: IF_fpTOS(fp[0]=fpTOS);
                   2288: FP=fp;
                   2289: sp=(Cell*)(SYSCALL(Cell*(*)(Cell *, void *))u)(sp, &FP);
                   2290: fp=FP;
                   2291: IF_spTOS(spTOS=sp[0];)
                   2292: IF_fpTOS(fpTOS=fp[0]);
                   2293: 
1.131     pazsan   2294: \+FFCALL
                   2295: 
1.136     pazsan   2296: av-start-void  ( c_addr -- )   gforth  av_start_void
1.131     pazsan   2297: av_start_void(alist, c_addr);
                   2298: 
1.136     pazsan   2299: av-start-int   ( c_addr -- )   gforth  av_start_int
1.131     pazsan   2300: av_start_int(alist, c_addr, &irv);
                   2301: 
1.136     pazsan   2302: av-start-float ( c_addr -- )   gforth  av_start_float
1.131     pazsan   2303: av_start_float(alist, c_addr, &frv);
                   2304: 
1.136     pazsan   2305: av-start-double        ( c_addr -- )   gforth  av_start_double
1.131     pazsan   2306: av_start_double(alist, c_addr, &drv);
                   2307: 
1.136     pazsan   2308: av-start-longlong      ( c_addr -- )   gforth  av_start_longlong
1.131     pazsan   2309: av_start_longlong(alist, c_addr, &llrv);
                   2310: 
1.136     pazsan   2311: av-start-ptr   ( c_addr -- )   gforth  av_start_ptr
1.131     pazsan   2312: av_start_ptr(alist, c_addr, void*, &prv);
                   2313: 
                   2314: av-int  ( w -- )  gforth  av_int
                   2315: av_int(alist, w);
                   2316: 
1.136     pazsan   2317: av-float       ( r -- )        gforth  av_float
1.131     pazsan   2318: av_float(alist, r);
                   2319: 
1.136     pazsan   2320: av-double      ( r -- )        gforth  av_double
1.131     pazsan   2321: av_double(alist, r);
                   2322: 
1.136     pazsan   2323: av-longlong    ( d -- )        gforth  av_longlong
1.131     pazsan   2324: av_longlong(alist, d);
                   2325: 
1.136     pazsan   2326: av-ptr ( c_addr -- )   gforth  av_ptr
1.131     pazsan   2327: av_ptr(alist, void*, c_addr);
                   2328: 
1.136     pazsan   2329: av-int-r  ( R:w -- )  gforth  av_int_r
                   2330: av_int(alist, w);
                   2331: 
                   2332: av-float-r     ( -- )  gforth  av_float_r
                   2333: float r = *(Float*)lp;
                   2334: lp += sizeof(Float);
                   2335: av_float(alist, r);
                   2336: 
                   2337: av-double-r    ( -- )  gforth  av_double_r
                   2338: double r = *(Float*)lp;
                   2339: lp += sizeof(Float);
                   2340: av_double(alist, r);
                   2341: 
                   2342: av-longlong-r  ( R:d -- )      gforth  av_longlong_r
                   2343: av_longlong(alist, d);
                   2344: 
                   2345: av-ptr-r       ( R:c_addr -- ) gforth  av_ptr_r
                   2346: av_ptr(alist, void*, c_addr);
                   2347: 
                   2348: av-call-void   ( -- )  gforth  av_call_void
1.131     pazsan   2349: SAVE_REGS
                   2350: av_call(alist);
                   2351: REST_REGS
                   2352: 
1.136     pazsan   2353: av-call-int    ( -- w )        gforth  av_call_int
1.131     pazsan   2354: SAVE_REGS
                   2355: av_call(alist);
1.134     pazsan   2356: REST_REGS
1.131     pazsan   2357: w = irv;
                   2358: 
1.136     pazsan   2359: av-call-float  ( -- r )        gforth  av_call_float
1.131     pazsan   2360: SAVE_REGS
                   2361: av_call(alist);
                   2362: REST_REGS
                   2363: r = frv;
                   2364: 
1.136     pazsan   2365: av-call-double ( -- r )        gforth  av_call_double
1.131     pazsan   2366: SAVE_REGS
                   2367: av_call(alist);
                   2368: REST_REGS
                   2369: r = drv;
                   2370: 
1.136     pazsan   2371: av-call-longlong       ( -- d )        gforth  av_call_longlong
1.131     pazsan   2372: SAVE_REGS
                   2373: av_call(alist);
                   2374: REST_REGS
                   2375: d = llrv;
                   2376: 
1.136     pazsan   2377: av-call-ptr    ( -- c_addr )   gforth  av_call_ptr
1.131     pazsan   2378: SAVE_REGS
                   2379: av_call(alist);
                   2380: REST_REGS
                   2381: c_addr = prv;
                   2382: 
1.135     pazsan   2383: alloc-callback ( a_ip -- c_addr )      gforth  alloc_callback
                   2384: c_addr = (char *)alloc_callback(engine_callback, (Xt *)a_ip);
1.131     pazsan   2385: 
1.135     pazsan   2386: va-start-void  ( -- )  gforth  va_start_void
                   2387: va_start_void(clist);
1.131     pazsan   2388: 
1.135     pazsan   2389: va-start-int   ( -- )  gforth  va_start_int
                   2390: va_start_int(clist);
1.131     pazsan   2391: 
1.135     pazsan   2392: va-start-longlong      ( -- )  gforth  va_start_longlong
                   2393: va_start_longlong(clist);
1.131     pazsan   2394: 
1.135     pazsan   2395: va-start-ptr   ( -- )  gforth  va_start_ptr
                   2396: va_start_ptr(clist, (char *));
1.131     pazsan   2397: 
1.135     pazsan   2398: va-start-float ( -- )  gforth  va_start_float
                   2399: va_start_float(clist);
                   2400: 
                   2401: va-start-double        ( -- )  gforth  va_start_double
                   2402: va_start_double(clist);
                   2403: 
                   2404: va-arg-int     ( -- w )        gforth  va_arg_int
                   2405: w = va_arg_int(clist);
                   2406: 
                   2407: va-arg-longlong        ( -- d )        gforth  va_arg_longlong
                   2408: d = va_arg_longlong(clist);
                   2409: 
                   2410: va-arg-ptr     ( -- c_addr )   gforth  va_arg_ptr
                   2411: c_addr = (char *)va_arg_ptr(clist,char*);
                   2412: 
                   2413: va-arg-float   ( -- r )        gforth  va_arg_float
                   2414: r = va_arg_float(clist);
                   2415: 
                   2416: va-arg-double  ( -- r )        gforth  va_arg_double
                   2417: r = va_arg_double(clist);
1.131     pazsan   2418: 
                   2419: va-return-void ( -- )  gforth va_return_void
                   2420: va_return_void(clist);
                   2421: return 0;
                   2422: 
                   2423: va-return-int ( w -- ) gforth va_return_int
                   2424: va_return_int(clist, w);
                   2425: return 0;
                   2426: 
                   2427: va-return-ptr ( c_addr -- )    gforth va_return_ptr
                   2428: va_return_ptr(clist, void *, c_addr);
                   2429: return 0;
                   2430: 
                   2431: va-return-longlong ( d -- )    gforth va_return_longlong
                   2432: va_return_longlong(clist, d);
                   2433: return 0;
                   2434: 
                   2435: va-return-float ( r -- )       gforth va_return_float
                   2436: va_return_float(clist, r);
                   2437: return 0;
                   2438: 
                   2439: va-return-double ( r -- )      gforth va_return_double
                   2440: va_return_double(clist, r);
                   2441: return 0;
                   2442: 
1.142     pazsan   2443: \+
                   2444: 
                   2445: \+OLDCALL
1.131     pazsan   2446: 
1.1       anton    2447: define(`uploop',
                   2448:        `pushdef(`$1', `$2')_uploop(`$1', `$2', `$3', `$4', `$5')`'popdef(`$1')')
                   2449: define(`_uploop',
                   2450:        `ifelse($1, `$3', `$5',
                   2451:               `$4`'define(`$1', incr($1))_uploop(`$1', `$2', `$3', `$4', `$5')')')
                   2452: \ argflist(argnum): Forth argument list
                   2453: define(argflist,
                   2454:        `ifelse($1, 0, `',
                   2455:                `uploop(`_i', 1, $1, `format(`u%d ', _i)', `format(`u%d ', _i)')')')
                   2456: \ argdlist(argnum): declare C's arguments
                   2457: define(argdlist,
                   2458:        `ifelse($1, 0, `',
                   2459:                `uploop(`_i', 1, $1, `Cell, ', `Cell')')')
                   2460: \ argclist(argnum): pass C's arguments
                   2461: define(argclist,
                   2462:        `ifelse($1, 0, `',
                   2463:                `uploop(`_i', 1, $1, `format(`u%d, ', _i)', `format(`u%d', _i)')')')
                   2464: \ icall(argnum)
                   2465: define(icall,
1.47      anton    2466: `icall$1       ( argflist($1)u -- uret )       gforth
1.9       pazsan   2467: uret = (SYSCALL(Cell(*)(argdlist($1)))u)(argclist($1));
1.1       anton    2468: 
                   2469: ')
                   2470: define(fcall,
1.47      anton    2471: `fcall$1       ( argflist($1)u -- rret )       gforth
1.9       pazsan   2472: rret = (SYSCALL(Float(*)(argdlist($1)))u)(argclist($1));
1.1       anton    2473: 
                   2474: ')
                   2475: 
1.46      pazsan   2476: \ close ' to keep fontify happy
1.1       anton    2477: 
                   2478: uploop(i, 0, 7, `icall(i)')
                   2479: icall(20)
                   2480: uploop(i, 0, 7, `fcall(i)')
                   2481: fcall(20)
                   2482: 
1.15      pazsan   2483: \+
1.131     pazsan   2484: \+
1.1       anton    2485: 
1.142     pazsan   2486: \g peephole
1.46      pazsan   2487: 
1.112     pazsan   2488: \+peephole
                   2489: 
1.119     anton    2490: compile-prim1 ( a_prim -- ) gforth compile_prim1
                   2491: ""compile prim (incl. immargs) at @var{a_prim}""
                   2492: compile_prim1(a_prim);
                   2493: 
                   2494: finish-code ( -- ) gforth finish_code
                   2495: ""Perform delayed steps in code generation (branch resolution, I-cache
                   2496: flushing).""
                   2497: finish_code();
                   2498: 
                   2499: forget-dyncode ( c_code -- f ) gforth-internal forget_dyncode
                   2500: f = forget_dyncode(c_code);
                   2501: 
                   2502: decompile-prim ( a_code -- a_prim ) gforth-internal decompile_prim
                   2503: ""a_prim is the code address of the primitive that has been
                   2504: compile_prim1ed to a_code""
1.121     anton    2505: a_prim = (Cell *)decompile_code((Label)a_code);
1.119     anton    2506: 
1.112     pazsan   2507: \ set-next-code and call2 do not appear in images and can be
                   2508: \ renumbered arbitrarily
1.46      pazsan   2509: 
1.112     pazsan   2510: set-next-code ( #w -- ) gforth set_next_code
                   2511: #ifdef NO_IP
                   2512: next_code = (Label)w;
                   2513: #endif
1.34      jwilke   2514: 
1.112     pazsan   2515: call2 ( #a_callee #a_ret_addr -- R:a_ret_addr ) gforth
                   2516: /* call with explicit return address */
                   2517: #ifdef NO_IP
                   2518: INST_TAIL;
                   2519: JUMP(a_callee);
1.45      anton    2520: #else
1.112     pazsan   2521: assert(0);
1.45      anton    2522: #endif
1.131     pazsan   2523: 
                   2524: tag-offsets ( -- a_addr ) gforth tag_offsets
                   2525: extern Cell groups[32];
                   2526: a_addr = groups;
1.51      anton    2527: 
1.54      pazsan   2528: \+
1.128     anton    2529: 
                   2530: \g static_super
                   2531: 
1.147   ! anton    2532: ifdef(`M4_ENGINE_FAST',
        !          2533: `include(peeprules.vmg)')
1.54      pazsan   2534: 
1.112     pazsan   2535: \g end

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