Re: [chuck-users] Conversion float to int using SndBuf (Michael Heuer) => (ermina) => (Jean Menezes da Rocha)

Thank you Michael, Ermina and Jean! It is working a treat. Micheal On Tue, 21 Jan 2020 at 17:00, wrote:

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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" 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 To: ChucK Users Mailing List 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 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

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---------- Forwarded message ---------- From: Jean Menezes da Rocha To: ChucK Users Mailing List 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 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

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-- Jean Menezes da Rocha _______________________________________________ chuck-users mailing list chuck-users@lists.cs.princeton.edu https://lists.cs.princeton.edu/mailman/listinfo/chuck-users