[Tcl-bugs] [ tcl-Bugs-1567222 ] error in bignum << computation

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Bugs item #1567222, was opened at 2006-09-28 14:29
Message generated for change (Comment added) made by dgp
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Category: 47. Number Handling
Group: development: 8.5a5
Status: Open
Resolution: None
Priority: 9
Submitted By: Don Porter (dgp)
Assigned to: Don Porter (dgp)
Summary: error in bignum << computation

Initial Comment:

On 32-bit systems, the correct
result:

% expr {(500000000000000<<28)}
134217728000000000000000

On an LP64 system:

% expr {(500000000000000<<28)}
-781880310697558016


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>Comment By: Don Porter (dgp)
Date: 2006-09-28 15:26

Message:
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user_id=80530


Wow.  That was subtle.

Code had literal "1"
where it needed to have "1L"
or perhaps "((long)1)".

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