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34 lines
666 B
Forth
34 lines
666 B
Forth
\ Sieve benchmark
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CR .( Loading Sieve Benchmark... ) CR
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Onlyforth
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: allot ( u --)
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dup sp@ here - $180 - u>
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abort" no room" allot ;
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&8192 Constant size
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Create flags size allot
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: do-prime ( -- #primes )
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flags size 1 fill 0
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size 0 DO flags I + c@
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IF I 2* 3+ dup I +
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BEGIN dup size <
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WHILE 0 over flags + c!
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over +
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REPEAT 2drop 1+
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THEN
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LOOP ;
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: benchmark
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do-prime . ." Primzahlen" ;
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: .primes size 0 DO flags I + c@
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IF I 2* 3+ . THEN ?cr
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stop? IF LEAVE THEN LOOP ;
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CR .( Start Benchmark ) CR
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benchmark CR
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.primes CR
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.( Benchmark finished ) CR
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