vlazzarini
commented
2 months ago no longer true. Also there is no need to use negative size since 6.0.
Open tjingboem opened 2 months ago
vlazzarini
commented
2 months ago no longer true. Also there is no need to use negative size since 6.0.
tjingboem
commented
2 months ago good. i will remove this Note. Could you review https://csound.com/manual/f.html and see if this information is still correct in this respect?
joachimheintz
commented
2 months ago yes but i suggest that on this manual page we should mention the issues we discussed about the extended guard point and its effect on the reported table size. perhaps victor can say whether this is correct and can go into the manual:
Note that setting a positive table size as a power of two plus one is interpreted by Csound as a power of two size with extended guard point for interpolation. E.g. positive table size 8 and 9 both will report 8 as actual table size: ftlen(ftgen(0,0,8,2,0)) -> 8 ftlen(ftgen(0,0,9,2,0)) -> 8
A negative table size however will set the real size of the table, without distiguishing between power-of-two-plus-one and other sizes: ftlen(ftgen(0,0,-8,2,0)) -> 8 ftlen(ftgen(0,0,-9,2,0)) -> 9
On 30/04/2024 10:02, vlazzarini wrote:
no longer true. Also there is no need to use negative size since 6.0.
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csounder
commented
2 months ago important distinction and clarification
- Dr.B
Dr. Richard Boulanger
Professor
Electronic Production and Design
Berklee College of Music
Professional Writing & Technology Division
On Tue, Apr 30, 2024 at 12:26 PM joachimheintz @.***> wrote:
yes but i suggest that on this manual page we should mention the issues we discussed about the extended guard point and its effect on the reported table size. perhaps victor can say whether this is correct and can go into the manual:
Note that setting a positive table size as a power of two plus one is interpreted by Csound as a power of two size with extended guard point for interpolation. E.g. positive table size 8 and 9 both will report 8 as actual table size: ftlen(ftgen(0,0,8,2,0)) -> 8 ftlen(ftgen(0,0,9,2,0)) -> 8
A negative table size however will set the real size of the table, without distiguishing between power-of-two-plus-one and other sizes: ftlen(ftgen(0,0,-8,2,0)) -> 8 ftlen(ftgen(0,0,-9,2,0)) -> 9
On 30/04/2024 10:02, vlazzarini wrote:
no longer true. Also there is no need to use negative size since 6.0.
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https://csound.com/manual/SiggenTableacc.html
Is this Note no longer true for 7.0? [Note] Note Although tables with a size which is not a power of two can be created using a negative size (see f score statement), some opcodes will not accept them.