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

I think the check was broken, Steven seems to have fixed it.

> On 1 Oct 2024, at 23:06, vlz <[email protected]> wrote:
> 
> 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://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcsound.com%2Fdocs%2Fmanual%2Ff.html&data=05%7C02%7Cvictor.lazzarini%40MU.IE%7Ced34c2452e0944cee65e08dce2655307%7C1454f5ccbb354685bbd98621fd8055c9%7C0%7C0%7C638634172089549293%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=q%2FHKKa4e2uF9WQRK7Ur%2BjdiJv9EWs55KWuFXTpryVz0%3D&reserved=0)
>>> 
>>> "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
>>