According to the manual, a capital K can be used to denote an in or out type
for a UDO. The implication is that this is different from a lower-case k in
that it's "with initialization." But this phrase doesn't seem to be
explained on that manual page, and I have been unable to determine
experimentally whether there is any difference between K and k. They seem to
function identically.

Is there a functional difference? If so, what is it? Thanks!

--Jim Aikin

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It does what it says on the tin!  k does not work at the init-pass,  
but K does.
These examples should give you an idea of how this works:

opcode Test1,i,k
kvar xin
xout i(kvar)
endop

opcode Test2,i,K
kvar xin
xout i(kvar)
endop

instr 1

k1 init 10
i1 Test1 k1
i2 Test2 k1
print i1
print i2

endin
======

new alloc for instr 1:
instr 1: i1 = 0.000
instr 1: i2 = 10.000



On 1 Sep 2011, at 20:38, Jim Aikin wrote:

> According to the manual, a capital K can be used to denote an in or  
> out type
> for a UDO. The implication is that this is different from a lower- 
> case k in
> that it's "with initialization." But this phrase doesn't seem to be
> explained on that manual page, and I have been unable to determine
> experimentally whether there is any difference between K and k. They  
> seem to
> function identically.
>
> Is there a functional difference? If so, what is it? Thanks!
>
> --Jim Aikin
>
> --
> View this message in context: http://csound.1045644.n5.nabble.com/K-rate-I-O-for-UDOs-tp4759760p4759760.html
> Sent from the Csound - General mailing list archive at Nabble.com.
>
>
> Send bugs reports to the Sourceforge bug tracker
>            https://sourceforge.net/tracker/?group_id=81968&atid=564599
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body  
> "unsubscribe csound"
>

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie





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> It does what it says on the tin!  k does not work at the init-pass,  
> but K does. 

Thanks, Victor. That explains it. The manual page, I'm constrained to point
out, doesn't say that. It simply says, "k-rate with initialization." This is
not a clear explanation; really, it's not an explanation at all.

By now I've forgotten the rather convoluted steps that are needed to update
manual pages, or I'd fix it myself. Maybe I can dig out the instructions.
They should still be around here somewhere ... but I seem to recall
something about the code having been moved from SVN to GIT or something.
That may have nothing to do with updating the manual, or I may be
remembering backwards. But how would I know?

Anyway, thanks.

--JA


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I've been catching up on old postings and came across this one, which  
I don't understand.

Victor, in your example the K-rate parameter apparently somehow gets  
set to 0, I guess because of the line:

xout i(kvar)

This example seems to bump up against my continuing inability to  
completely understand what happens at i-time vs k-time, and what the  
real differences are between i-rate and k-rate variables.

Would you be so kind as to explain why opcode Test1 returns a zero and  
Test2 does not?

Many thanks.

-Lou Cohen


On Sep 2, 2011, at 3:46 PM, Victor Lazzarini wrote:

> It does what it says on the tin!  k does not work at the init-pass,  
> but K does.
> These examples should give you an idea of how this works:
>
> opcode Test1,i,k
> kvar xin
> xout i(kvar)
> endop
>
> opcode Test2,i,K
> kvar xin
> xout i(kvar)
> endop
>
> instr 1
>
> k1 init 10
> i1 Test1 k1
> i2 Test2 k1
> print i1
> print i2
>
> endin
> ======
>
> new alloc for instr 1:
> instr 1: i1 = 0.000
> instr 1: i2 = 10.000
>
>
>
> On 1 Sep 2011, at 20:38, Jim Aikin wrote:
>
>> According to the manual, a capital K can be used to denote an in or  
>> out type
>> for a UDO. The implication is that this is different from a lower- 
>> case k in
>> that it's "with initialization." But this phrase doesn't seem to be
>> explained on that manual page, and I have been unable to determine
>> experimentally whether there is any difference between K and k.  
>> They seem to
>> function identically.
>>
>> Is there a functional difference? If so, what is it? Thanks!
>>
>> --Jim Aikin
>>
>> --
>> View this message in context: http://csound.1045644.n5.nabble.com/K-rate-I-O-for-UDOs-tp4759760p4759760.html
>> Sent from the Csound - General mailing list archive at Nabble.com.
>>
>>
>> Send bugs reports to the Sourceforge bug tracker
>>           https://sourceforge.net/tracker/?group_id=81968&atid=564599
>> Discussions of bugs and features can be posted here
>> To unsubscribe, send email sympa@lists.bath.ac.uk with body  
>> "unsubscribe csound"
>>
>
> Dr Victor Lazzarini
> Senior Lecturer
> Dept. of Music
> NUI Maynooth Ireland
> tel.: +353 1 708 3545
> Victor dot Lazzarini AT nuim dot ie
>
>
>
>
>
> Send bugs reports to the Sourceforge bug tracker
>           https://sourceforge.net/tracker/?group_id=81968&atid=564599
> Discussions of bugs and features can be posted here
> To unsubscribe, send email sympa@lists.bath.ac.uk with body  
> "unsubscribe csound"
>



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