Re: [PATCH v7 4/6] iio: ABI: Add support for floating-point numbers in buffer scan elements

[David Lechner <dlechner@baylibre.com>]

On 3/5/26 3:23 AM, Andy Shevchenko wrote:
> On Thu, Mar 5, 2026 at 11:09 AM Francesco Lavra <flavra@baylibre.com> wrote:
>> On Wed, 2026-03-04 at 16:45 -0600, David Lechner wrote:
>>> On 3/4/26 2:06 AM, Francesco Lavra wrote:
>>>> In the data storage description of a scan element, the first character
>>>> after the colon can have the values 's' and 'u' to specify signed and
>>>> unsigned integers, respectively.
>>>> Add 'f' as an allowed value to specify floating-point numbers formatted
>>>> according to the IEEE 754 standard.
> 
> ...
> 
>>>> -  Format is [be|le]:[s|u]bits/storagebits[Xrepeat][>>shift] .
>>>> +  Format is [be|le]:[f|s|u]bits/storagebits[Xrepeat][>>shift] .
>>>>
>>>>    * *be* or *le*, specifies big or little endian.
>>>> +  * *f*, specifies if floating-point.
>>>>    * *s* or *u*, specifies if signed (2's complement) or unsigned.
>>>
>>> I would keep all of the format options on one bullet point.
>>
>> That's what I did initially, but Andy suggested doing differently [1].
> 
> And still I think it's better to not mix them. The floating in the
> same sentence is confusing (along with 2's complement mention and
> sign).

Then I would split up all 3. It is strange to mix some and not
all.

> 
> ...
> 
>>>> -is [be|le]:[s|u]bits/storagebits[Xrepeat][>>shift], where:
>>>> +is [be|le]:[f|s|u]bits/storagebits[Xrepeat][>>shift], where:
>>>>
>>>>  - **be** or **le** specifies big or little-endian.
>>>> +- **f** specifies if floating-point.
>>>>  - **s** or **u** specifies if signed (2's complement) or unsigned.
>>>
>>> same here
>>
>> [1] https://lore.kernel.org/linux-iio/aZ7dCdLs5xcJ4UGW@smile.fi.intel.com/
> 
> Same here.
>