It seems that the Javascript is doing 32-bit signed math. So the easiest way is to do your calculations and then pack it into 32bit as 4 bytes, and then to reinterpret these four bytes as signed integer:

perl -E 'say unpack "l", pack "L", (1169367104<<5)'
-1234958336

[download]

In reply to Re: Trying to translate overflowing JS code to Perl by Corion
in thread Trying to translate overflowing JS code to Perl by bliako

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