Re: What is?

From: Kevin Dethlefs (demortes@msn.com)
Date: 06/12/02


>
> >What is this 128 bit deal? What does it do? I seen it on the ftp site,
>and
> >now in here. Its bugging me.
>
>Uses an array of integers to give the illusion of one big bitvector.
>
>unsigned long array_o_bits[4];  /* 32 bits * 4 ints = 128 bits */
>
>#define AFF_A 1
>#define AFF_B 2
>#define AFF_Z 26
>#define AFF_z 52
>
>AFF_z = array_o_bits[52 / 32] & (1 << (52 % 32));
>AFF_z = array_o_bits[1] & (1 << 20);
>
>Only downside being you cannot do:
>
>   PRF_FLAGGED(ch, PRF_B | PRF_Z)
>
>because "2 | 26" doesn't do what you want, while "(1 << 26) | (1 << 2)"
>does.

Note to self: Don't ask good programmers complicated questions, it only
confuses the heck out of me.

Could someone perhaps give an example, or am i just to much of a newbie to C
programming?

Demortes

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