[perl #34442] [TODO] *BooleanArray PMCs should use single bit per bool

[Bernhard Schmalhofer]

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This was mentioned by Leo in Ticket 34934 and 30230:

> Oh well, while at it, the *BooleanArray should just use one bit per item
> not an INTVAL.

I'll tackle that. First I'll propable take a look at Bit::Vector in Perl5,
as there are propably a lot of interesting methods on a boolean array.

There are even CPUs with processor instructions for counting set bits.
Does that call for some inline assembler in PMC C-code?

CU, Bernhard

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[Leopold Toetsch]

Bernhard Schmalhofer (via RT) wrote:

>
> This was mentioned by Leo in Ticket 34934 and 30230:
>
>
>>Oh well, while at it, the *BooleanArray should just use one bit per item
>>not an INTVAL.
>
>
> I'll tackle that. First I'll propable take a look at Bit::Vector in Perl5,
> as there are propably a lot of interesting methods on a boolean array.

Great, thanks.

> There are even CPUs with processor instructions for counting set bits.
> Does that call for some inline assembler in PMC C-code?

Not yet IMHO. But I can imagine that PGE might need all available speed
hacks. Let's see.

> CU, Bernhard

leo