in reply to Re^2: C code translation to Perl
in thread C code translation to Perl

I have no clue why the values differs from the 5th element on.

You are using a 64-bit perl, (or possibly a 32-bit Perl with 64-bit IVs enabled), which means that your attempts to reproduce the results from the C code which uses 32-bit integers isn't working.

The type of bit-wise math in the C code relies heavily on the implicit mod 2**32 of intermediate results to work.

For a way to 'fix' it, see Re: emulate 32-bit on perl 64.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

The start of some sanity?

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Re^4: C code translation to Perl
by bottch (Initiate) on Jan 31, 2012 at 16:18 UTC
    Thanks a lot BrowserUK! You just kinda hit the bullseye :) Now everything works fine. Thanks again. regards,bottch
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