...reserved for each element in the bit vector.

You were wanting 64 bits, so each is one bit wide. This is 32-bit perl:

$ perl -e 'vec( $foo, 63, 1) = 1; print unpack( "b64",$foo),$/'
0000000000000000000000000000000000000000000000000000000000000001

[download]
or, if you prefer your high order bits printed on the left,
$ perl -e 'vec( $foo, 63, 1) = 1; print scalar reverse(unpack "b64",$f
+oo),$/'
1000000000000000000000000000000000000000000000000000000000000000

[download]
The bitwise operators work on vec() strings

After Compline,
Zaxo

In reply to Re: Re: bitboards in perl by Zaxo
in thread Need data struct that can hold 64 bits of info (was: bitboards in perl) by justinNEE

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