-
Notifications
You must be signed in to change notification settings - Fork 1
/
CORE.FTH
43 lines (39 loc) · 996 Bytes
/
CORE.FTH
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
: begin here ; immediate
: again lit branch , here - , ; immediate
: until lit branch0 , here - , ; immediate
: while lit branch0 , here 0 , ; immediate
: repeat swap lit branch , here - , here over - swap ! ; immediate
: if lit branch0 , here 0 , ; immediate
: else lit branch , here 0 , swap here over - swap ! ; immediate
: then here over - swap ! ; immediate
: nip swap drop ;
: -rot rot rot ;
: ?dup dup if dup then ;
: 2dup over over ;
: tuck swap over ;
: 2drop drop drop ;
: % /mod drop ;
: / /mod nip ;
: > swap < ;
: = 2dup < invert -rot swap < invert and ;
: <> = invert ;
: >= < invert ;
: <= swap < invert ;
: ( begin key 41 = until ; immediate
: min 2dup < if drop else nip then ;
: max 2dup > if drop else nip then ;
: variable
word mkhdr
48016 , 1024 , 58367 ,
lit lit ,
here 4 + ,
lit exit , 0 , ;
: constant
word mkhdr
48016 , 1024 , 58367 ,
lit lit , ,
lit exit , ;
: . ( n -- )
dup 0 < if 45 emit -1 * then
10 /mod ?dup if . then
48 + emit ;