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bug#21883: unnecessary bit shifting range limits

From: Mark H Weaver
Subject: bug#21883: unnecessary bit shifting range limits
Date: Sun, 14 Oct 2018 18:19:36 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux)

Stefan Israelsson Tampe <address@hidden> writes:
> how would this slow down the code. just add the correction where you
> throw the exception which should be in a branch outside the hot path.

If you have a suggestion that's simpler than what I did in commits
011aec7e, 9448a078, and 1990aa91, and just as fast in the common cases,
feel free to propose a patch.  The words above are insufficient.


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