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From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Devarsh Thakkar <devarsht@ti.com>
Cc: mchehab@kernel.org, hverkuil-cisco@xs4all.nl,
	linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
	benjamin.gaignard@collabora.com, sebastian.fricke@collabora.com,
	akpm@linux-foundation.org, gregkh@linuxfoundation.org,
	adobriyan@gmail.com, jani.nikula@intel.com,
	p.zabel@pengutronix.de, airlied@gmail.com, daniel@ffwll.ch,
	dri-devel@lists.freedesktop.org,
	laurent.pinchart@ideasonboard.com, praneeth@ti.com, nm@ti.com,
	vigneshr@ti.com, a-bhatia1@ti.com, j-luthra@ti.com,
	b-brnich@ti.com, detheridge@ti.com, p-mantena@ti.com,
	vijayp@ti.com, andrzej.p@collabora.com, nicolas@ndufresne.ca,
	davidgow@google.com, dlatypov@google.com
Subject: Re: [PATCH v10 06/11] math.h: Add macros for rounding to closest value
Date: Thu, 30 May 2024 22:19:37 +0300	[thread overview]
Message-ID: <ZljRSXtXWdOyCJaB@smile.fi.intel.com> (raw)
In-Reply-To: <20240530171225.2749312-1-devarsht@ti.com>

On Thu, May 30, 2024 at 10:42:25PM +0530, Devarsh Thakkar wrote:
> Add below rounding related macros:
> 
> round_closest_up(x, y) : Rounds x to closest multiple of y where y is a
> power of 2, with a preference to round up in case two nearest values are
> possible.
> 
> round_closest_down(x, y) : Rounds x to closest multiple of y where y is a
> power of 2, with a preference to round down in case two nearest values are
> possible.
> 
> roundclosest(x, y) : Rounds x to closest multiple of y, this macro should
> generally be used only when y is not multiple of 2 as otherwise
> round_closest* macros should be used which are much faster.
> 
> Examples:
>  * round_closest_up(17, 4) = 16
>  * round_closest_up(15, 4) = 16
>  * round_closest_up(14, 4) = 16
>  * round_closest_down(17, 4) = 16
>  * round_closest_down(15, 4) = 16
>  * round_closest_down(14, 4) = 12
>  * roundclosest(21, 5) = 20
>  * roundclosest(19, 5) = 20
>  * roundclosest(17, 5) = 15

...

> + * Examples :

It's inconsistent with the other one below.

> + * 	round_closest_up(17, 4) = 16
> + *
> + * 	round_closest_up(15, 4) = 16
> + *
> + * 	round_closest_up(14, 4) = 16

The three have TABs/spaces mixture.

I believe you wanted:

 * Examples::
 * * round_closest_up(17, 4) = 16
 * * round_closest_up(15, 4) = 16
 * * round_closest_up(14, 4) = 16

...

> + * Examples:
> + *
> + * 	round_closest_down(17, 4) = 16
> + *
> + * 	round_closest_down(15, 4) = 16
> + *
> + * 	round_closest_down(14, 4) = 12

As per above

...

> + * Examples :
> + *
> + * 	roundclosest(21, 5) = 20
> + *
> + * 	roundclosest(19, 5) = 20
> + *
> + * 	roundclosest(17, 5) = 15

As per above.

-- 
With Best Regards,
Andy Shevchenko



  reply	other threads:[~2024-05-30 19:19 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-05-30 16:59 [PATCH v10 00/11] Add V4L2 M2M Driver for E5010 JPEG Encoder Devarsh Thakkar
2024-05-30 17:07 ` [PATCH v10 01/11] media: dt-bindings: Add Imagination " Devarsh Thakkar
2024-05-30 17:08 ` [PATCH v10 02/11] media: imagination: Add E5010 JPEG Encoder driver Devarsh Thakkar
2024-05-30 17:10 ` [PATCH v10 03/11] media: v4l2-jpeg: Export reference quantization and huffman tables Devarsh Thakkar
2024-05-30 17:11 ` [PATCH v10 04/11] media: imagination: Use exported tables from v4l2-jpeg core Devarsh Thakkar
2024-05-30 17:11 ` [PATCH v10 05/11] media: verisilicon : Use exported tables from v4l2-jpeg for hantro codec Devarsh Thakkar
2024-05-30 17:12 ` [PATCH v10 06/11] math.h: Add macros for rounding to closest value Devarsh Thakkar
2024-05-30 19:19   ` Andy Shevchenko [this message]
2024-05-31  8:36     ` Devarsh Thakkar
2024-05-30 17:17 ` [PATCH v10 07/11] Documentation: core-api: Add math.h macros and functions Devarsh Thakkar
2024-05-30 19:21   ` Andy Shevchenko
2024-05-31  8:44     ` Devarsh Thakkar
2024-05-30 22:44   ` Randy Dunlap
2024-05-31 10:57     ` Devarsh Thakkar
2024-05-30 17:18 ` [PATCH v10 08/11] lib: add basic KUnit test for lib/math Devarsh Thakkar
2024-05-30 19:23   ` Andy Shevchenko
2024-05-31  8:40     ` Devarsh Thakkar
2024-05-30 17:18 ` [PATCH v10 09/11] lib: math_kunit: Add tests for new macros related to rounding to nearest value Devarsh Thakkar
2024-05-30 17:19 ` [PATCH v10 10/11] media: imagination: Round to closest multiple for cropping region Devarsh Thakkar
2024-05-30 17:19 ` [PATCH v10 11/11] gpu: ipu-v3: Use generic macro for rounding closest to specified value Devarsh Thakkar

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