Re: [Csnd-dev] [EXTERNAL] [Csnd-dev] sysdep.h and MAXLEN for ftables

Then for some reason in the build B64BIT is not defined. If that’s defined you can do

i1 ftgen 1, 0, 2^28, 2, 0, 2^28, 0 

We need to check that.

> On 1 Oct 2024, at 22:47, Giovanni Bedetti <[email protected]> wrote:
> 
> I tried to create a table (using the API, compileOrc and CopyTableIn) after reading samples from a stereo file (so the table will hold both channels, interleaved): this works: audioClip samples 4549938x2 = 9099876, length (seconds): 103.1732, sr: 44100
> this doesn't: audioClip samples 10612538x2 = 21225076, length (seconds): 240.6471, sr: 44100
> with this log:
> illegal table length 
> INIT ERROR in instr 0 (opcode ftgen) line 11: ftgen error gisampletable100 ftgen 100 0 -21225076 -7 0 0
> 
> I'm still using Csound6 (6.18) on CsoundUnity on macOS
> 
> Il giorno mar 1 ott 2024 alle ore 21:58 Victor Lazzarini <[email protected]> ha scritto:
> That’s if B64BIT is not defined. Actually I don’t think we need to check for this.
> ========================
> Prof. Victor Lazzarini
> Maynooth University
> Ireland
> 
> > On 1 Oct 2024, at 20:20, Steven Yi <[email protected]> wrote:
> > 
> > I was going off what's documented in the manual (https://csound.com/docs/manual/f.html)
> > 
> > "p3 -- Size of function table (i.e. number of points) Must be a power of 2, or a power-of-2 plus 1 if this number is positive. Maximum table size is 16777216 (224) points."
> > 
> > I think Giovanni ran into issues with longer sized tables but I don't recall how long. 
> > 
> > On Tue, Oct 1, 2024 at 3:00 PM Victor Lazzarini <[email protected]> wrote:
> > MAXLEN is 0x10000000 for most modern archs, that's 2^28 is it not? That translates into 
> > about 101 minutes of audio at 44100.
> > 
> > It does not strike me as too short. I think we could get away with 2^32 without having to do a major overhaul, but I need to check if my idea works correctly. That would allows 1603 minutes or 27 hours of audio. 
> > 
> > Prof. Victor Lazzarini 
> > Maynooth University
> > Ireland
> > 
> >> On 1 Oct 2024, at 13:36, Steven Yi <[email protected]> wrote:
> >> 
> >>  *Warning*
> >> This email originated from outside of Maynooth University's Mail System. Do not reply, click links or open attachments unless you recognise the sender and know the content is safe.
> >> Hi All,
> >> 
> >> I was chatting with Giovanni Bedetti on Discord about max table length. It seems awfully small at 2^24 (~16MB). Any reason not to bump that up to something larger? 
> >> 
> >> Also, while looking at that, I noticed B64BIT detection in sysdep.h. I saw that it was missing aarch64 amongst other things, so I've submitted a PR to update this. 
> >> 
> >> steven
>