Messages in this thread | | | Date | Fri, 11 Feb 2022 13:11:25 +0100 | Subject | Re: [PATCH v4 1/6] drm/format-helper: Add drm_fb_xrgb8888_to_gray8_line() | From | Javier Martinez Canillas <> |
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Hello Jani,
On 2/11/22 13:05, Jani Nikula wrote:
[snip]
>>>> I don't see why a while loop would be an improvement here TBH. >>> >>> Less letters to parse when reading the code. >> >> It's a simple refactoring of code that has worked well so far. Let's >> leave it as-is for now. > > IMO *always* prefer a for loop over while or do-while. > > The for (i = 0; i < N; i++) is such a strong paradigm in C. You > instantly know how many times you're going to loop, at a glance. Not so > with with the alternatives, which should be used sparingly. > > And yes, the do-while suggested above is buggy, and you actually need to > stop and think to see why. >
Absolutely agree.
These format conversion helpers are not trivial to read and understand (at least for me). In my opinion the code should be written in a way that ease readability and make as robust and less error prone as possible.
> > BR, > Jani. Best regards, -- Javier Martinez Canillas Linux Engineering Red Hat
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