Talk:Pseudo-random numbers/PCG32: Difference between revisions
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:::::::: Writing an alternative draft is, of course, the only constructive use of these divergences. I might often feel puzzled by the sheer unreliability and stylistic incoherence of some variants touchingly announced to be 'idiomatic', but these things don't need to be said. |
:::::::: Writing an alternative draft is, of course, the only constructive use of these divergences. I might often feel puzzled by the sheer unreliability and stylistic incoherence of some variants touchingly announced to be 'idiomatic', but these things don't need to be said. |
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:::::::: Variant drafts are much more useful and interesting Rosetta commentaries, and much more eloquent too. [[User:Hout|Hout]] ([[User talk:Hout|talk]]) 06:57, 16 August 2020 (UTC) |
:::::::: Variant drafts are much more useful and interesting Rosetta commentaries, and much more eloquent too. [[User:Hout|Hout]] ([[User talk:Hout|talk]]) 06:57, 16 August 2020 (UTC) |
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== Help needed == |
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I am trying to translate the JAVA Program to REXX. |
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Can anyone explain this stone in my way (the different values of t5)? |
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These are a few lines of a JAVA program |
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<pre> |
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long t1=(shiftedx >>> rotx); System.out.printf("%nt1=%d",t1); |
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int t2=(~rotx); System.out.printf("%nt2=%d",t2); |
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int t3=(t2+1); System.out.printf("%nt3=%d",t3); |
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int t4=(t3 & 31); System.out.printf("%nt4=%d",t4); |
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System.out.printf("%nshiftedx=%d",shiftedx); |
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System.out.printf("%nlong t5=(shiftedx << t4);"); |
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long t5=(shiftedx << t4); System.out.printf("%nt5=%d",t5); |
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long t7=(t1|t5); System.out.printf("%nt7=%d",t7); |
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int t8=(int) t7; System.out.printf("%nt8=%d",t8); |
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running this program shows this in the output: |
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t4=20 |
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shiftedx=-293022013 |
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long t5=(shiftedx << t4); |
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t5=1815085056 |
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When I try this in a small program, |
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long n=-293022013; |
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int s=20; |
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long t5=(n<<s); |
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System.out.printf("%nn=%d",n); |
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System.out.printf("%nt5=%d",t5); |
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I get |
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n=-293022013 |
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t5=-307255850303488 |
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</pre> |
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--Walter Pachl 08:22, 27 February 2021 (UTC) |