Given you are already using unpack, why not let it do the whole job? 

 perl> print unpack( 'N', chr(255).chr(255).chr(255).chr(255) )
4294967295

[download]

The only caveat to this (or blakm's solution above) is that if the data is sourced from a system other than your own, the byte-order my be different (big-endian .v. little-endian ot vice versa) in which case you would need to use an unpack template of 'V'. The difference is demonstrated by 

 perl> print unpack( 'N', chr(255).chr(127).chr(64).chr(32) )
4286529568
 perl> print unpack( 'V', chr(255).chr(127).chr(64).chr(32) )
541097983

[download]
If the source is a foriegn system, and you are unsure of the byte ordering, you'll need a sample known value and try both to make your determination of which of 'N' or 'V' to use.

In reply to Re: How do I convert a 32 bit unsigned integer to it's decimal value. by BrowserUk
in thread How do I convert a 32 bit unsigned integer to its decimal value? by notfred

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