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From: George Spelvin <linux@horizon.com>
To: vda.linux@googlemail.com, mina86@mina86.com
Cc: hughd@google.com, linux-kernel@vger.kernel.org, linux@horizon.com
Subject: [PATCH 4/4] lib: vsprintf: Fix broken comments
Date: Fri,  3 Aug 2012 01:21:11 -0400	[thread overview]
Message-ID: <1343971271-13355-4-git-send-email-linux@horizon.com> (raw)
In-Reply-To: <1343971271-13355-1-git-send-email-linux@horizon.com>

Numbering the 8 potential digits 2 though 9 never did make a lot of sense.

Signed-off-by: George Spelvin <linux@horizon.com>
---
 lib/vsprintf.c |   14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 3ca77b8..692e61b 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -182,19 +182,19 @@ char *put_dec_trunc8(char *buf, unsigned r)
 
 	if (r == 0)
 		return buf;
-	q      = (r * 0x199a) >> 16;
-	*buf++ = (r - 10 * q)  + '0'; /* 6 */
+	q      = (r * 0x199a) >> 16;	/* r <= 9999 */
+	*buf++ = (r - 10 * q)  + '0';
 	if (q == 0)
 		return buf;
-	r      = (q * 0xcd) >> 11;
-	*buf++ = (q - 10 * r)  + '0'; /* 7 */
+	r      = (q * 0xcd) >> 11;	/* q <= 999 */
+	*buf++ = (q - 10 * r)  + '0';
 	if (r == 0)
 		return buf;
-	q      = (r * 0xcd) >> 11;
-	*buf++ = (r - 10 * q) + '0'; /* 8 */
+	q      = (r * 0xcd) >> 11;	/* r <= 99 */
+	*buf++ = (r - 10 * q) + '0';
 	if (q == 0)
 		return buf;
-	*buf++ = q + '0'; /* 9 */
+	*buf++ = q + '0';		/* q <= 9 */
 	return buf;
 }
 
-- 
1.7.10.4


  parent reply	other threads:[~2012-08-03  5:21 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-03  5:21 [PATCH 1/4] lib: vsprintf: Optimize division by 10 for small integers George Spelvin
2012-08-03  5:21 ` [PATCH 2/4] lib: vsprintf: Optimize division by 10000 George Spelvin
2012-09-23 17:30   ` Michal Nazarewicz
2012-09-24 12:16     ` George Spelvin
2012-09-24 12:41       ` Michal Nazarewicz
2012-09-24 13:56         ` George Spelvin
2012-09-24 15:14           ` Geert Uytterhoeven
2012-09-24 15:48             ` George Spelvin
2012-09-24  9:03   ` Denys Vlasenko
2012-09-24 12:35     ` George Spelvin
2012-09-24 15:02       ` Denys Vlasenko
2012-08-03  5:21 ` [PATCH 3/4] lib: vsprintf: Optimize put_dec_trunc8 George Spelvin
2012-09-23 14:18   ` Rabin Vincent
2012-09-24 11:13     ` George Spelvin
2012-09-24 14:33     ` George Spelvin
2012-09-24 14:53       ` Michal Nazarewicz
2012-09-24 14:57         ` Michal Nazarewicz
2012-09-23 18:22   ` Michal Nazarewicz
2012-09-24 11:46     ` George Spelvin
2012-09-24 12:29       ` Michal Nazarewicz
2012-09-24 13:49         ` George Spelvin
2012-09-24 15:06           ` Michal Nazarewicz
2012-09-25 11:44           ` George Spelvin
2012-09-25 13:00             ` Denys Vlasenko
2012-08-03  5:21 ` George Spelvin [this message]
2012-09-23 17:22 ` [PATCH 1/4] lib: vsprintf: Optimize division by 10 for small integers Michal Nazarewicz
2012-09-24 14:18   ` George Spelvin
2012-09-24  9:06 ` Denys Vlasenko
2012-09-24 11:27   ` George Spelvin

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