[PATCH v1 2/4] lib/math/int_log: Use ARRAY_SIZE(logtable) where makes sense

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: "Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
	"Mauro Carvalho Chehab" <mchehab@kernel.org>,
	"Hans Verkuil" <hverkuil-cisco@xs4all.nl>,
	"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
	"Mark Brown" <broonie@kernel.org>,
	"David Lin" <CTLIN0@nuvoton.com>,
	linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
	alsa-devel@alsa-project.org
Cc: Antti Palosaari <crope@iki.fi>, Sergey Kozlov <serjk@netup.ru>,
	Abylay Ospan <aospan@netup.ru>,
	Yasunari Takiguchi <Yasunari.Takiguchi@sony.com>,
	Michael Krufky <mkrufky@linuxtv.org>,
	Matthias Schwarzott <zzam@gentoo.org>,
	Akihiro Tsukada <tskd08@gmail.com>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>
Subject: [PATCH v1 2/4] lib/math/int_log: Use ARRAY_SIZE(logtable) where makes sense
Date: Mon, 19 Jun 2023 20:20:17 +0300	[thread overview]
Message-ID: <20230619172019.21457-3-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20230619172019.21457-1-andriy.shevchenko@linux.intel.com>

Use ARRAY_SIZE(logtable) where makes sense.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 lib/math/int_log.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/math/int_log.c b/lib/math/int_log.c
index 322df25a22d6..ea98fc0b3fe2 100644
--- a/lib/math/int_log.c
+++ b/lib/math/int_log.c
@@ -91,7 +91,7 @@ unsigned int intlog2(u32 value)
 	 *	so we would use the entry 0x18
 	 */
 	significand = value << (31 - msb);
-	logentry = (significand >> 23) & 0xff;
+	logentry = (significand >> 23) % ARRAY_SIZE(logtable);
 
 	/**
 	 *	last step we do is interpolation because of the
@@ -109,7 +109,7 @@ unsigned int intlog2(u32 value)
 	 *	logtable_next is 256
 	 */
 	interpolation = ((significand & 0x7fffff) *
-			((logtable[(logentry + 1) & 0xff] -
+			((logtable[(logentry + 1) % ARRAY_SIZE(logtable)] -
 			  logtable[logentry]) & 0xffff)) >> 15;
 
 	/* now we return the result */
-- 
2.40.0.1.gaa8946217a0b

