RFR: 8343700: ceil_log2 should not loop endlessly

[Andrew Haley]

On Wed, 13 Nov 2024 14:28:37 GMT, Sonia Zaldana Calles <szaldana at openjdk.org> wrote:

> Hi all, 
> 
> This PR addresses [8343700](https://bugs.openjdk.org/browse/JDK-8343700) where ceil_log2 looped endlessly if the input value has the highest bit set. 
> 
> I also dealt with the case where we try to find ceil_log2(1) which would've returned 1 as opposed to 0. 
> 
> Cheers, 
> Sonia

Marked as reviewed by aph (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/22074#pullrequestreview-2433734092