mirror of
https://github.com/forth-ev/VolksForth.git
synced 2024-12-25 10:29:25 +00:00
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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