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Re^2: 3-byte representation

by BrowserUk (Pope)
on Oct 12, 2011 at 18:32 UTC ( #931059=note: print w/ replies, xml ) Need Help??


in reply to Re: 3-byte representation
in thread 3-byte representation

Hm?

Big-endian:

sub pack24{ substr( pack('l>', $_[0]), 1) };; sub unpack24{ unpack('l>', "$_[0]\0") };; print "$_: ", unpack24( pack24( $_ ) ) for ( -8388608, -8388607, -2, -1, 0, 1, 2, 8388606, 8388607 );; -8388608: -2147483648 -8388607: -2147483392 -2: -512 -1: -256 0: 0 1: 256 2: 512 8388606: 2147483136 8388607: 2147483392

Little-endian:

sub pack24{ substr( pack('l<', $_[0]), 1) };; sub unpack24{ unpack('l<', "$_[0]\0") };; print "$_: ", unpack24( pack24( $_ ) ) for ( -8388608, -8388607, -2, -1, 0, 1, 2, 8388606, 8388607 );; -8388608: 16744448 -8388607: 16744448 -2: 16777215 -1: 16777215 0: 0 1: 0 2: 0 8388606: 32767 8388607: 32767

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.


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Re^3: 3-byte representation
by ikegami (Pope) on Oct 12, 2011 at 18:45 UTC

    Thanks, a "/256" got accidentally dropped when I posted my code. Fixed.

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