mirror of https://git.sr.ht/~rabbits/uxn
43 lines
785 B
Tal
43 lines
785 B
Tal
( Primes:
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An integer greater than one is called a prime number
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if its only positive divisors are one and itself. )
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|0100 ( -> ) @reset
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#0000 INC2k
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&loop
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DUP2 ,is-prime JSR #00 EQU ,&skip JCN
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( print ) DUP2 ,print/short JSR
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( space ) #2018 DEO
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&skip
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INC2 NEQ2k ,&loop JCN
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POP2 POP2
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( halt ) #010f DEO
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BRK
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@is-prime ( number* -- flag )
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DUP2 #0001 EQU2 ,&fail JCN
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STH2k
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( range ) #01 SFT2 #0002
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&loop
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STH2kr OVR2 ( mod2 ) [ DIV2k MUL2 SUB2 ] ORA ,&continue JCN
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POP2 POP2
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POP2r #00 JMP2r
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&continue
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INC2 GTH2k ,&loop JCN
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POP2 POP2
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POP2r #01
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JMP2r
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&fail POP2 #00 JMP2r
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@print ( short* -- )
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&short ( short* -- ) SWP ,&byte JSR
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&byte ( byte -- ) DUP #04 SFT ,&char JSR
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&char ( char -- ) #0f AND DUP #09 GTH #27 MUL ADD #30 ADD #18 DEO
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JMP2r
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