linuxaudio.org

Hi,
I tried to post this to faust-users-list, but since I changed my email-adress

this was refused. Now, after spending a week of "awaiting moderator approval",

I decided to post my question here, and I hope that some of the faust-guys

might be around.
I have a problem understanding this piece of faust-code:
index( n ) = &( n - 1 ) ~ + ( 1 );
It is from the faust-soft-computing.pdf. I do understand that it works like a

counter and I think it should jump back to 0 when it reaches n - 1. But

what exactly is the logical AND operator doing? In the quick reference it is

sayed, that primitives behave like their C counterpart. O.k. I don't have any

experience in C, but I realy tried to figure this out. To me it seemed, that

the "&" operator in C would give back the smaller value of the two compared.

So in this case it would give pack the line from 0 to n-1 and then continue

with streaming n-1. But that would not make any sense if it is used in a

delay-line, to calculate the read/write index, does it? 
Please correct me if I missunderstood something and thank you for help.
Kind regards,
Bjoern

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