I would $num >>= 16;
Both methods have problems on 32-bit systems.
GrandFather's produces the correct result and warnings, but yours gives the wrong result?
print 24600988483 / 2**32;;
print 24600988483 / 0x100000000;;
Integer overflow in hexadecimal number at (eval 24) line 1
Hexadecimal number > 0xffffffff non-portable at (eval 24) line 1
print 24600988483 >> 16;;
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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