SPUG: 24-bit signed int unpacking?

Eric Johanson ericj at cubesearch.com
Fri Oct 1 02:17:35 CDT 2004

Hey perl-gurus,

I'm trying to use unpack to convert binary 24-bit ints into native perl

For example (in hex):

I'd like to convert:

"\x24\x00\x00"  => 66

"\xf9\xff\xff"  => -7

I COULD just tack on 0x00 or 0xFF based on the last byte values, but this
seems really ghetto.   Is there a slicker method for conversion?

print unpack('i*', "\xf9\xff\xff"); # Darn, doesn't work...


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