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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.

Replies are listed 'Best First'.
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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