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Do you mean Math::BigInt numbers?
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I've pretty long string of \d chars that cannot be converted with sprintf(&quot;%X&quot;, $str).<br />
Let's say that decimal value can reach upto 2^64 (8 bytes)<br />

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I've pretty long string of \d chars that cannot be converted with sprintf("%X", $str).
Let's say that decimal value can reach upto 2^64 (8 bytes)


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perl -MMath::BigInt=:constant -e '$x=shift; printf&quot;%08X%08X\n&quot;,$x/2**3<wbr />2,$x%2**32<wbr />' 9876543210987654321
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perl -MMath::BigInt=:constant -e '$x=shift; printf"%08X%08X\n",$x/2**32,$x%2**32' 9876543210987654321

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Hmm... That's doesn't work :(<br />
It ouputs result 891087B87FFFFFFF<br />
And it's always 7fffffff in $x%2**32<br />

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Hmm... That's doesn't work :(
It ouputs result 891087B87FFFFFFF
And it's always 7fffffff in $x%2**32


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Sounds like you left out the -MMath::BigInt=:constant
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Sounds like you left out the -MMath::BigInt=:constant

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I've just copy&amp;past-ed the whole string into command line. I understand this is the way that should work.<br />

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I've just copy&past-ed the whole string into command line. I understand this is the way that should work.


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I get<br />
+2299561912+3820424369<br />
In a case I substitute &quot;%s%s&quot; with &quot;%X%X&quot; - I receive:<br />
891087B8E3B70CB1<br />
<br />
What, I suppose, is correct.<br />
Thanks, ozo.<br />

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I get
+2299561912+3820424369
In a case I substitute "%s%s" with "%X%X" - I receive:
891087B8E3B70CB1

What, I suppose, is correct.
Thanks, ozo.


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You probably want to substitiute %08X%08X, in case you get a number like 9876543207167229953<br />
I guess you must have a version of Math::BigInt that doesn't support :constant, sorry.
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You probably want to substitiute %08X%08X, in case you get a number like 9876543207167229953
I guess you must have a version of Math::BigInt that doesn't support :constant, sorry.

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<div class="content wysiwyg-content">
How can I convert big numbers from decimal to Hex?<br />

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How can I convert big numbers from decimal to Hex?


Big numbers in perl.

Perl is a high-level, general-purpose, interpreted, dynamic programming languages with over 25 years of development. Perl 5 runs on over 100 platforms from portables to mainframes and is suitable for both rapid prototyping and large-scale development projects.  Perl gained widespread popularity as a Common Gateway Interface (CGI) scripting language, in part due to its regular expression and string parsing abilities. In addition to CGI, Perl is used for graphics programming, system administration, network programming, finance, bioinformatics, and other applications.