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;; LDC 0, LDC 0, CEQ, TSEL adr 0 でadrへの無条件jmpを表現できることを使って | |
;; 0+..+n をループで求める | |
;; environment frame の破壊的変更は ST でできる | |
LDC 0 ; sum | |
LDC 10 ; n | |
CONS | |
LDF 7 | |
AP 1 | |
DBUG | |
RTN | |
LD 0 0 | |
CDR | |
LDC 0 | |
CEQ | |
TSEL 12 15 | |
LD 0 0 | |
CAR | |
RTN | |
LD 0 0 ; n != 0 | |
CAR | |
LD 0 0 | |
CDR | |
ADD | |
LD 0 0 | |
CDR | |
LDC 1 | |
SUB | |
CONS | |
ST 0 0 | |
LDC 0 | |
LDC 0 | |
CEQ | |
TSEL 7 0 ;; always jump to 7 |
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LDC 10 ; n | |
LDF 5 | |
AP 1 | |
DBUG | |
RTN | |
LD 0 0 | |
LDC 0 | |
CEQ | |
SEL 10 12 | |
RTN | |
LDC 0 | |
JOIN | |
LD 0 0 | |
LD 0 0 ; x > 1 | |
LDC 1 | |
SUB | |
LDF 5 | |
AP 1 | |
ADD | |
JOIN |
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;; SELのかわりにTSELを使うとJOINがいらなくなる | |
LDC 10 ; n | |
LDF 5 | |
AP 1 | |
DBUG | |
RTN | |
LD 0 0 | |
LDC 0 | |
CEQ | |
TSEL 9 11 | |
LDC 0 | |
RTN | |
LD 0 0 ; x > 1 | |
LD 0 0 | |
LDC 1 | |
SUB | |
LDF 5 | |
AP 1 | |
ADD | |
RTN |
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;; (n, acc) を引数にとって、末尾再帰するver. | |
;; スタックを食いつぶさない | |
LDC 3 ; n | |
LDC 0 ; acc | |
CONS | |
LDF 7 | |
AP 1 | |
DBUG | |
RTN | |
LD 0 0 | |
CAR | |
LDC 0 | |
CEQ | |
TSEL 12 15 | |
LD 0 0 ; n == 0 | |
CDR | |
RTN | |
LD 0 0 | |
CAR | |
LDC 1 | |
SUB | |
LD 0 0 | |
CDR | |
LD 0 0 | |
CAR | |
ADD | |
CONS | |
LDF 7 | |
TAP 1 | |
RTN |
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