from hex to signed int

[theSnail]

it's not christmas time but i'm lost inside pack-ing and unpack-ing!

can someone unpack me and show the way to get a signed integer from a one byte long hex?

thanks
theSnail

 

[Kirsle]

my $int = oct("0x[COLOR=red]9C[/color]");

where 9C is your one byte hex code (00..FF)

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[url=http://www.cuvou.com/]Cuvou.com[/url] | My personal homepage
[url=http://www.project-fearless.com]Project Fearless[/url] | My web blog

 

[theSnail]

uhm !
but

what's the oct value that corresponds to "-23" , just for example.

 

[Kirsle]

afaik, hexadecimal doesn't support negative numbers... not in one byte, anyway, because one byte can only range from 00 to FF... or, 0 to 255, with no room for negative numbers.

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Cuvou.com | My personal homepage
Project Fearless | My web blog

 

[MillerH]

Yes, as Kirsle says, simply define your range and translate it yourself.

my @n = (-127.. 128);

my @correctRange = map {$_ + 127} @n;

- Miller