netdev - [PATCH iproute2 3/2] tc_core: Return double from tc_core

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Message-ID: <20090609225317.GA3262@ami.dom.local>
Date:	Wed, 10 Jun 2009 00:53:46 +0200
From:	Jarek Poplawski <jarkao2@...il.com>
To:	Patrick McHardy <kaber@...sh.net>
Cc:	Stephen Hemminger <shemminger@...tta.com>,
	Antonio Almeida <vexwek@...il.com>,
	David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
	Martin Devera <devik@....cz>,
	Eric Dumazet <dada1@...mosbay.com>,
	Vladimir Ivashchenko <hazard@...ncoudi.com>,
	Badalian Vyacheslav <slavon@...telecom.ru>
Subject: [PATCH iproute2 3/2] tc_core: Return double from
	tc_core_tick2time()

Hmm... I'm not sure this floor() is needed here, but maybe I'll get it
tomorrow... 

Thanks,
Jarek P.
-------------------------->
Patrick McHardy wrote:
> It seems inconsistent to have the time2tick() function take a
> double, but return an unsigned from tick2time(). If we're going
> to change this, please keep them symetrical (you could even use
> floor() in tick2time() to make it more explicit).

This patch removes this inconsistency.

Suggested-by: Patrick McHardy <kaber@...sh.net>
Signed-off-by: Jarek Poplawski <jarkao2@...il.com>
---

diff -Nurp a/tc/tc_core.c b/tc/tc_core.c
--- a/tc/tc_core.c	2009-06-09 22:59:42.000000000 +0200
+++ b/tc/tc_core.c	2009-06-10 00:26:10.000000000 +0200
@@ -41,9 +41,9 @@ unsigned tc_core_time2tick(double time)
 	return ceil(time * tick_in_usec);
 }
 
-unsigned tc_core_tick2time(unsigned tick)
+double tc_core_tick2time(unsigned tick)
 {
-	return tick/tick_in_usec;
+	return floor(tick / tick_in_usec);
 }
 
 unsigned tc_core_time2ktime(unsigned time)
diff -Nurp a/tc/tc_core.h b/tc/tc_core.h
--- a/tc/tc_core.h	2009-06-09 22:57:17.000000000 +0200
+++ b/tc/tc_core.h	2009-06-10 00:26:58.000000000 +0200
@@ -15,7 +15,7 @@ enum link_layer {
 
 int  tc_core_time2big(double time);
 unsigned tc_core_time2tick(double time);
-unsigned tc_core_tick2time(unsigned tick);
+double tc_core_tick2time(unsigned tick);
 unsigned tc_core_time2ktime(unsigned time);
 unsigned tc_core_ktime2time(unsigned ktime);
 unsigned tc_calc_xmittime(unsigned rate, unsigned size);
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