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POHow to determine bitwise binary scores for a list of number in perl?
 

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  1. POHow to determine bitwise binary scores for a list of number in perl?
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    <p>I am trying to inter-convert some decimal and binary numbers. I am working with data produced in the following format:</p> <pre><code>Example decimal: 163, Corresponding binary: 10100011 Binary table key: </code></pre> <p><img src="https://i.stack.imgur.com/LDIhF.png" alt="enter image description here"></p> <pre><code>...and the corresponding description for the binary number in question: </code></pre> <p><img src="https://i.stack.imgur.com/nhbCe.png" alt="enter image description here"></p> <p>I want to be able to take a decimal number, convert it to binary, and then use this look-up table to print a list of attributes for a given decimal. I'm able to convert my decimal to binary using this code:</p> <pre><code>sub dec2bin { my $str = unpack("B32", pack("N", shift)); $str =~ s/^0+(?=\d)//; # otherwise you'll get leading zeros return $str; } </code></pre> <p>But then don't see how to use the lookup table. The problem is, I have binary numbers specifically designed to be compatible for this table, such as 1000011, 10000011, 101110011, but I just don't see how to use these binaries to pull our their descriptions. They are even different lengths!</p> <p>Can someone please help me understand what is going on here?</p> <p>EDIT: here is another look-up table I found... perhaps this is more accurate/helpful? It looks identical to me, but is from the software's offiical <a href="http://samtools.sourceforge.net/samtools.shtml#5" rel="nofollow noreferrer">website</a>. </p> <p><img src="https://i.stack.imgur.com/XG7nv.png" alt="enter image description here"></p>
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    1. CODid you mistype the binary number? Looks like it should be `11000011` from your tabular description.
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      1. USHunter McMillen
    2. COI thought so too! But this isn't a typo... this is from the official description website for samtools, which is a very prominent set of software tools for biologists, and other guides I've found use similar examples.
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    3. COThat is confusing then because `0x20` maps to 32 (base 10) and the 32 bit is set in the number above, but the table does list the `0x20` description. It lists the `0x80` (64, base 10) description.
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