Subject: Re: [linux-audio-dev] Converting float to int
From: Daniel V. (dvenkita_AT_ecel.uwa.edu.au)
Date: Mon Oct 29 2001 - 18:30:28 EET
On Monday 29 October 2001 22:47, you wrote:
> On Mon, Oct 29, 2001 at 09:03:53PM +0800, Daniel V. wrote:
> > Hi all. I know this has been answered before but I can't find the post
> > :( Anyway, the problem is I have a buffer of audio represented as floats
> > [-1,+1] that I want to convert to signed shorts for writing to my card.
> > I recall there is an efficient way of doing this, and an inefficient way.
> > Can someone remind me with a snippet of code?
>
> inline int f_round(float f) {
> f += (3<<22);
> return *((int*)&f) - 0x4b400000;
> }
>
> output = f_round(32768.0f * input)
>
Thanks for the info. I'll remember to save it this time :)
Daniel.
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