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siever.s
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Text File
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1990-12-10
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671b
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36 lines
DECIMAL
: TASK ;
8190 CONSTANT SIZE
: DO-PRIME
{ 5 REGS P Q PRIMECOUNT LOOPCOUNT LIMIT SIZE LOCBUFF FLAGS }
FLAGS SIZE 1 FILL
FLAGS SIZE + TO LIMIT
0 TO PRIMECOUNT 0 TO LOOPCOUNT
BEGIN
FLAGS LOOPCOUNT + C@
IF LOOPCOUNT 2* 3 + TO P
FLAGS P + LOOPCOUNT + TO Q
Q LIMIT <
IF
BEGIN
0 Q C!
P ADDTO Q
Q LIMIT < NOT
UNTIL
THEN
1 ADDTO PRIMECOUNT
THEN
1 ADDTO LOOPCOUNT
LOOPCOUNT SIZE = UNTIL
PRIMECOUNT . ." primes "
;
: PRIMES { 1 REGARG CNT }
FOR CNT DO-PRIME NEXT ;