mirror of
https://github.com/forth-ev/VolksForth.git
synced 2024-11-26 17:49:18 +00:00
9a568b3a03
Names are adapted to DOS 8.3 file names, PETSCII adaptions of core.fth are reverted (DOS uses ASCII), the input test is disabled, since no way was yet found to inject keystrokes into dosbox. And some tweaks were applied to ans-shim.fth and the golden files to make the first tests (preliminary & core) to pass.
102 lines
1.9 KiB
Forth
102 lines
1.9 KiB
Forth
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: cells 2* ;
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: s" [compile] " compile count ; immediate restrict
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: c" [compile] " ; immediate restrict
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: [char] [compile] ascii ; immediate
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: char [compile] ascii ;
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: invert not ;
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: lshift 0 ?DO 2* LOOP ;
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: rshift 0 ?DO 2/ 32767 and LOOP ;
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\ : 2over 3 pick 3 pick ;
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: s>d extend ;
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: fm/mod m/mod ;
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: sm/rem dup >r 2dup xor >r m/mod
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over IF r> 0< IF 1+ swap r> - swap ELSE rdrop THEN
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ELSE rdrop rdrop THEN ;
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: postpone ' dup >name c@ $40 and
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IF , ELSE [compile] compile compile , THEN ; immediate
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\ : align ;
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: aligned ;
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: cell+ 2+ ;
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: char+ 1+ ;
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: chars ;
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\ : 2@ dup 2+ @ swap @ ;
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\ : 2! under ! 2+ ! ;
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: recurse last @ name> , ; immediate
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' endloop alias unloop
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: >number ( ud1 c-addr1 u1 -- ud2 c-addr2 u2 )
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BEGIN dup 0= IF exit THEN
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>r count digit? WHILE accumulate r> 1- REPEAT 1- r> ;
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: accept expect span @ ;
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: tuck under ;
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: :noname here ['] tuck @ , 0 ] ;
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: <> = not ;
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: 2>r r> -rot swap >r >r >r ;
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: 2r> r> r> r> swap rot >r ;
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: 2r@ r> r> r> 2dup >r >r swap rot >r ;
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: WITHIN ( test low high -- flag ) OVER - >R - R> U< ;
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: unused sp@ here - ;
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: again [compile] repeat ; immediate restrict
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: BUFFER: CREATE ALLOT ;
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: compile, , ;
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: defer! >body ! ;
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: defer@ >body @ ;
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: action-of
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STATE @ IF
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POSTPONE ['] POSTPONE DEFER@
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ELSE
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' DEFER@
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THEN ; IMMEDIATE
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: HOLDS ( addr u -- )
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BEGIN DUP WHILE 1- 2DUP + C@ HOLD REPEAT 2DROP ;
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: 2Variable ( --) Create 4 allot ;
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( -- adr)
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: 2Constant ( d --) Create , ,
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Does> ( -- d) 2@ ;
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: 2literal swap [compile] literal [compile] literal ;
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immediate restrict
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: d- dnegate d+ ;
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: d0< 0. d< ;
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: d2* 2dup d+ ;
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: d2/ dup 1 and -rot 2/ >r
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1 rshift swap IF $8000 or THEN r> ;
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: dmax 2over 2over d< IF 2swap THEN 2drop ;
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: dmin 2over 2over 2swap d< IF 2swap THEN 2drop ;
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: d>s drop ;
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: m+ extend d+ ;
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: 2rot 5 roll 5 roll ;
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