On Thu, 15 Mar 2012 11:51:37 +1100, Vasily Chekalkin <[email protected]>
wrote:
Yay!
Can you also try parrot with int keys and float values? Just for
curiosity.
--
Bacek
I was looking to make it possible (yesterday I pushed a commit to make
iterating
Hash PMCs with int keys possible) but it is not at the moment.
There as also some uncertainty how to proceed. At my PC(amd64) FLOATVAL
is
defined as synonym for double (64 bits). Hash values have maximum size
of a
pointer and there are architectures that have
sizeof(void *) < sizeof(double)
i386 to be precise.
So if we want to store FLOATVAL directly in hash tables we have 2
choises:
1. Make FLOATVAL = float (32 bit) on platforms where
sizeof(void *) < sizeof(double)
I am not sure if this is the right choice - what guarantees do we give
for
FLOATVALs (Num registers)?
2. make hashval field big enough for doubles - it will pose some
penalty on
32bit platforms
In either case it will not be the major case of use of hash tables. I
am not
even sure if Rakudo could do hashes with int keys
If we have consensus how to proceed I am willing to code it even if it
is not
the major use case.
Best regards
--
Luben Karavelov
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