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Fixed +loop

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This commit is contained in:
Koichi Nakamura 2021-01-11 10:14:55 +09:00
parent 3411fec40d
commit d014418bb4
1 changed files with 11 additions and 3 deletions
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14
bootstrap.fs
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@ -1473,16 +1473,24 @@ do-stack 16 cells + do-sp !
compile rdrop compile rdrop
; immediate ; immediate
\ This code is take from Gforth
: crossed-boundary? ( d n i )
swap - ( d i-n )
2dup + ( d i-n i+d-n )
over xor ( d i-n (i-n)^(i+d-n) )
>r xor r> ( d^(i-n) (i^n)^(i+d-n) )
and 0<
;
: +loop : +loop
compile r> compile r>
compile r> compile r>
compile 3dup
compile rot compile rot
compile over
compile + compile +
compile >r compile >r
compile over
compile >r compile >r
compile = compile crossed-boundary?
compile 0branch compile 0branch
here cell + backpatch-leave \ leave jumps to here here cell + backpatch-leave \ leave jumps to here
do> drop \ do-mark do> drop \ do-mark