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Today's Topics:

   1. Conversion float to int using SndBuf (M?che?l ? Cath?in)
   2. Re: Conversion float to int using SndBuf (Michael Heuer)
   3. Re: Conversion float to int using SndBuf (ermina)
   4. Re: Conversion float to int using SndBuf (Jean Menezes da Rocha)



---------- Forwarded message ----------
From: "Mícheál Ó Catháin" <micheal.ocathain@gmail.com>
To: chuck-users@lists.cs.princeton.edu
Cc: 
Bcc: 
Date: Tue, 21 Jan 2020 13:08:02 +0000
Subject: [chuck-users] Conversion float to int using SndBuf

Hi

What is the best way to convert a float to int in the following please?

//I want to set myBuf.pos to a percentage of myBuf.samples()...

//Start playing at say 40% through the total number of samples.

40.0 => float pctPosInit;

pctPosInit/100*myBuf.samples() => myBuf.pos;

This throws the error argument types don't match.

I'm not seeing how to convert the float to an int here.

Thanks for your help!

Micheal

---------- Forwarded message ----------
From: Michael Heuer <heuermh@gmail.com>
To: ChucK Users Mailing List <chuck-users@lists.cs.princeton.edu>
Cc: 
Bcc: 
Date: Tue, 21 Jan 2020 09:35:12 -0600
Subject: Re: [chuck-users] Conversion float to int using SndBuf
Hello Mícheál,

The ChucK language has a cast operator '$' which might come in handy in this situation

(pctPosInit/100*myBuf.samples()) $ int => myBuf.pos;

Cheers,

   michael


> On Jan 21, 2020, at 7:08 AM, Mícheál Ó Catháin <micheal.ocathain@gmail.com> wrote:
>
> Hi
> What is the best way to convert a float to int in the following please?
>
> //I want to set myBuf.pos to a percentage of myBuf.samples()...
> //Start playing at say 40% through the total number of samples.
>
> 40.0 => float pctPosInit;
> pctPosInit/100*myBuf.samples() => myBuf.pos;
>
>
> This throws the error argument types don't match.
> I'm not seeing how to convert the float to an int here.
> Thanks for your help!
>
> Micheal
> _______________________________________________
> chuck-users mailing list
> chuck-users@lists.cs.princeton.edu
> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users





---------- Forwarded message ----------
From: ermina <ermina@studioplume.com>
To: chuck-users@lists.cs.princeton.edu
Cc: 
Bcc: 
Date: Tue, 21 Jan 2020 16:47:40 +0100
Subject: Re: [chuck-users] Conversion float to int using SndBuf
Hi,

to convert a float to an int,
you need to explicitly cast the value with
4.8 $ int => int foo;  // foo == 4
(as written here: https://chuck.cs.princeton.edu/doc/language/oper.html)

So you would do something like
pctPosInit $ int => int pctPosInitInt
pctPosInitInt/100*myBuf.samples() => myBuf.pos;

. e
On 01/21/2020 02:08 PM, Mícheál Ó Catháin wrote:
> Hi
> What is the best way to convert a float to int in the following please?
>
> //I want to set myBuf.pos to a percentage of myBuf.samples()...
> //Start playing at say 40% through the total number of samples.
>
> 40.0 => float pctPosInit;
> pctPosInit/100*myBuf.samples() => myBuf.pos;
>
>
> This throws the error argument types don't match.
> I'm not seeing how to convert the float to an int here.
> Thanks for your help!
>
> Micheal
>
>
> _______________________________________________
> chuck-users mailing list
> chuck-users@lists.cs.princeton.edu
> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users
>




---------- Forwarded message ----------
From: Jean Menezes da Rocha <jean@menezesdarocha.info>
To: ChucK Users Mailing List <chuck-users@lists.cs.princeton.edu>
Cc: 
Bcc: 
Date: Tue, 21 Jan 2020 12:58:36 -0300
Subject: Re: [chuck-users] Conversion float to int using SndBuf

I would suggest that you call Math.round() before casting, as to prevent undesirable effects: notice that in the example sent by ermina, 4.8 rounds down to 4 when cast to int, which could cause miscalculations depending on your use case.

The previous example would look something like this if we used Math.round():

Math.round(pctPosInit) $ int => int pctPosInitInt;

pctPosInitInt/100*myBuf.samples() => myBuf.pos;

Best regards!

On Tue, Jan 21, 2020 at 12:49 PM ermina <ermina@studioplume.com> wrote:

Hi,

to convert a float to an int,
you need to explicitly cast the value with
4.8 $ int => int foo;  // foo == 4
(as written here: https://chuck.cs.princeton.edu/doc/language/oper.html)

So you would do something like
pctPosInit $ int => int pctPosInitInt
pctPosInitInt/100*myBuf.samples() => myBuf.pos;

. e
On 01/21/2020 02:08 PM, Mícheál Ó Catháin wrote:
> Hi
> What is the best way to convert a float to int in the following please?
>
> //I want to set myBuf.pos to a percentage of myBuf.samples()...
> //Start playing at say 40% through the total number of samples.
>
> 40.0 => float pctPosInit;
> pctPosInit/100*myBuf.samples() => myBuf.pos;
>
>
> This throws the error argument types don't match.
> I'm not seeing how to convert the float to an int here.
> Thanks for your help!
>
> Micheal
>
>
> _______________________________________________
> chuck-users mailing list
> chuck-users@lists.cs.princeton.edu
> https://lists.cs.princeton.edu/mailman/listinfo/chuck-users
>
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--

Jean Menezes da Rocha

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