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
next prev parent 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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