in reply to Re: Split any number into string of 8-bit hex values (=1 byte)
in thread Split any number into string of 8-bit hex values (=1 byte)

Your regex code is impressive to say the least!
It replicates my output verbatim.

But this fuzzy requirement about the number of bytes to be output seems odd to me.
I updated my post with what I hope is a clear question to the OP.

I guess we shall see what, if anything develops from that.

  • Comment on Re^2: Split any number into string of 8-bit hex values (=1 byte)

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Re^3: Split any number into string of 8-bit hex values (=1 byte)
by tybalt89 (Monsignor) on Aug 30, 2021 at 13:34 UTC

    I do have another regex ready in case the OP wants answers that are ONLY 1, 2, 4, or 8 bytes long.

    We'll just have to wait...

[reply]
      Yes please :-) If I'd convert anything from a quad and then remove unnecessary leading zeros so that I'd end up with 1, 2, 4 or 8 bytes I'm thinking that this should work. What does the regex look like?
[reply]
        #!/usr/bin/perl

use strict; # https://perlmonks.org/?node_id=11136191
use warnings;

for my $n (0, 2, 20, 200, 2000, 20000, 200000)
  {
  my @bytes = reverse sprintf('%016X', $n) =~ s/^0{8}(0{4}(00)?)?//r =
+~ /../g;
  print "$n => @bytes\n";
  }

        [download]

        Outputs: 

        0 => 00
2 => 02
20 => 14
200 => C8
2000 => D0 07
20000 => 20 4E
200000 => 40 0D 03 00

        [download]
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